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Fox ESS EQ3300-L6 High Voltage Storage Battery

Name: Fox ESS EQ3300-L6 High Voltage Storage Battery
Brand: Fox ESS

By Fox ESSSKU not documented

High-voltage stacked battery 384 V

Evidence score4/100Missing details

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Basic specs19.2 kWhDischarge50 A max.Charge25 A standardPeak current: 65 A $ / rated kWhUnavailable WarrantyUnknownSee terms Lifetime productionNot published Size199.27 L^*W: 570 × H: 920 × D: 380 mm219 kg482.81 lb0.1 kWh/L*CertificatesNone on fileEvidence missing

Key specs

Units

Chemistry: Lithium Iron Phosphate
Official user manual
Sources
The manual explicitly names EQ3300 and EQ3300 (w) then states chemistry of these products; no cell maker/model inferred.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 5, Notes on This Manual, named model scope
Documented
Nominal energy: 19.2 kWh
Official user manual
Sources
Printed in the cited exact-model table.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, Nominal energy (kWh)
Documented
Nominal voltage: 384 V
Official user manual
Sources
Printed in the cited exact-model table.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, Nominal voltage (V)
Documented
Standard charge current: 25 A
Official user manual
Sources
CC-CV standard charging current as printed.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, (CC-CV) Standard charging current (A)
Documented
Maximum discharge current: 50 A
Official user manual
Sources
The named charge/discharge row prints 50/50 or 50, with both directions explicit; no duration invented.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Max. charge/discharge current (A) and max. continuous row
Documented
Charge termination current: 2 A
Official user manual
Sources
Charging cut-off current, not low-voltage disconnect or discharge current.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Constant current and voltage charging cut-off current (A)
Documented
Maximum charge current: 50 A
Official user manual
Sources
The named charge/discharge row prints 50/50 or 50, with both directions explicit; no duration invented.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Max. charge/discharge current (A) and max. continuous row
Documented
Peak discharge current: 65 A
Official user manual
Sources
60 seconds as printed, not continuous current.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Peak discharge current (60s) (A)
Documented

7 specs not documented yet: usable energy, address / dip setting, conductor sizes, terminal torque, ground terminal torque, power cable installation, external fuse breaker ratingHelp fill in ›

All specs68

Chemistry: Lithium Iron Phosphate
Official user manual
Sources
The manual explicitly names EQ3300 and EQ3300 (w) then states chemistry of these products; no cell maker/model inferred.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 5, Notes on This Manual, named model scope
Documented
Nominal energy: 19.2 kWh
Official user manual
Sources
Printed in the cited exact-model table.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, Nominal energy (kWh)
Documented
Usable energy: Not documented
Nominal voltage: 384 V
Official user manual
Sources
Printed in the cited exact-model table.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, Nominal voltage (V)
Documented
Standard charge current: 25 A
Official user manual
Sources
CC-CV standard charging current as printed.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, (CC-CV) Standard charging current (A)
Documented
Maximum discharge current: 50 A
Official user manual
Sources
The named charge/discharge row prints 50/50 or 50, with both directions explicit; no duration invented.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Max. charge/discharge current (A) and max. continuous row
Documented
Charge termination current: 2 A
Official user manual
Sources
Charging cut-off current, not low-voltage disconnect or discharge current.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Constant current and voltage charging cut-off current (A)
Documented
Maximum charge current: 50 A
Official user manual
Sources
The named charge/discharge row prints 50/50 or 50, with both directions explicit; no duration invented.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Max. charge/discharge current (A) and max. continuous row
Documented
Peak discharge current: 65 A
Official user manual
Sources
60 seconds as printed, not continuous current.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Peak discharge current (60s) (A)
Documented
Operating voltage range: 348 to 438 V
Official user manual
Sources
Printed in the cited exact-model table.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, Battery voltage range (V)
Documented
Cycle rating: 6,000 cycles to 70% capacity
≥6000 @25°C @70%SOH, as printed.Official user manual
Sources
Printed ≥6000 @25℃ @70%SOH. No DoD or C-rate added.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Cycle life
Documented
Cycle rating end-of-life capacity: 70 %
Official user manual
Sources
Printed cycle-life condition, not warranty retention or DoD.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Cycle life, SOH condition
Documented

Lifetime production

Not published

Published claims and calculations are not independently tested lifetime output.

Communications: CAN
Official user manual
Sources
Exact-model table interface; on EQ-S this does not establish an external RJ45 connector or EQ-M pinout.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Communication interfaces
Documented
Storage temperature: -10 to 50 °C14 to 122 °F converted
Official user manual
Sources
Exact-model specification row. The separate PDF page 19 storage-duration/RH/SOC guidance is retained in storage_schedule without replacing this row.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Storage temperature (℃)
Documented
Fire protection: aerosol fire extinguishing device
Official user manual
Sources
Each battery unit is claimed to include a fire-protection module. Maker claim, not independent testing. Preserve the separate unresolved fire-response instruction conflict in this review. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 11, section 2.2.2 Fire Protection Function
Documented
Charging temperature: 0 to 55 °C32 to 131 °F converted
Official user manual
Sources
Printed charge/discharge pair 0~55/-10~55. Unsuffixed model table; no warm-up temperature transferred.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Operating charge/discharge temperature (℃)
Documented
Discharging temperature: -10 to 55 °C14 to 131 °F converted
Official user manual
Sources
Printed charge/discharge pair 0~55/-10~55. Unsuffixed model table; no warm-up temperature transferred.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Operating charge/discharge temperature (℃)
Documented
Expansion requirements: Installation: voltage deviation between new batteries and every single present battery less than 0.5V; recommend checking new batteries comply to warranty scope or have ever been re-charged within 5 months; present system SOC 50%±5%.; Replacement/capacity expansion: each battery SOC consistent; max. SOC difference should be between±5%; existing system about 50%; manufacture date of new battery shall not exceed 12 months; if exceeding 12 months charge new battery to around 50%.
Official user manual
Sources
Separate printed contexts retained. The unusual wording between±5% is not silently changed into a calculated numeric threshold. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF pages 16 and 38, installation and expanded-capacity requirements
Documented
Display: EQ3300-S: LED*1, EQ3300-M: LED*6
Official datasheet
Sources
Separate module labels, no role-name expansion.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, Display
Documented
Grounding (manual): Please ensure the reliability of the battery ground cable.
Official user manual
Sources
Earth Terminal no.12 is drawn on EQ-M. No separate EQ-S external earth terminal assigned. EQ-M package includes Grounding cable (PDF page 20). Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF pages 9-10, EQ-M interface; PDF page 28, warning
Documented
Scalability: Max. 6 Modules in Series
Official datasheet
Sources
Explicit datasheet row, not a calculated component total.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, Scalability
Documented
Humidity: 5 to 95 %
Official datasheet
Sources
No Condensation as printed; storage chapter is separate.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, Humidity [%]
Documented
Installation clearances (manual): Rear: ≥20 mm; Top: ≥300 mm; Left: ≥300 mm; Right: ≥300 mm
Official user manual
Sources
Native diagram read directly. Local installation and safety-clearance regulations also apply. Module must remain exposed to ambient air for natural convection; do not cover or shield it. No front-clearance number printed in this figure. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 21, section 5.2, native clearance diagram
Documented
Cooling: natural convection
Official user manual
Sources
Common manual instruction says the battery module is cooled by natural convection; retained as module/assembled-stack context.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 21, Clearance note
Documented
Address / DIP setting: Not documented
Details
No module address-setting procedure located. Module Addressing failed is a fault label, not a procedure. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Location: PDF pages 8-28 and 36-37; full 86-page text keyword scan
Not documented
Conductor sizes: Not documented
Details
No AWG or mm² power/ground conductor size located. No gauge inferred from package pictures or wiring figures. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Location: PDF pages 20 and 26-28; full 86-page text keyword scan
Not documented
Low SOC storage: 0~35°C; 0% ≤ SOC < 5%; maximum charge interval 7 days
Official user manual
Sources
Power-off SOC before storage. Note additionally says when SOC decreases to 0%, charge within 7 days; permanent faults from customer-caused delayed charging are beyond warranty scope. No numeric warranty term inferred. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 38, section 7.3.2 low-SOC storage table
Documented
Protective class: Class Ⅰ
Official user manual
Sources
Printed protective class, not country or certification-listing proof.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Protective class
Documented
Site restriction: Do not install the equipment outdoors in salt-affected areas because it may be corroded.
Official user manual
Sources
Salt-affected means within 1000 m of coast or prone to sea breeze; sea-breeze regions vary with weather such as typhoons/monsoons or terrain such as dams/hills. No market inferred. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 16, section 3.3 Installation
Documented
Storage schedule: Below -20°C: Not allowed; -20~0°C: 10%~90% RH; ≤1 months; 20%≤SOC≤50%; 0~35°C: 10%~90% RH; ≤6 months; 20%≤SOC≤50%; 35~55°C: 10%~90% RH; ≤1 months; 20%≤SOC≤50%; Above 55°C: Not allowed
Official user manual
Sources
Common module storage guidance. Recommended storage time is not more than 6 months. Table bounds, RH, duration and SOC conditions remain together; keep separately from the narrower exact-model specification storage-temperature rows. Boundary overlap is printed; do not resolve it by inference. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 19, Storage Requirement conditional table
Documented
Battery fuse or breaker (manual): Internal Short Circuit, Over voltage, over current, over temp, Under voltage.
Conflicting fire-response passages in the manual
PDF page 16, Installation, says: In case of fire, use only dry powder fire extinguisher. Liquid extinguishers should not be used. PDF page 17, Fire Situation, says: In situations where the battery is on fire, if it is safe to do so, disconnect the battery pack by turn off the circuit breaker to shut off the power to the system. Use FM-200 or CO₂ fire extinguisher for the battery and an ABC fire extinguisher for the other parts of the system. Under any fire situation, please evacuate the people from the building immediately before trying to extinguish it. Both passages are retained as printed source evidence. No selected fire-response procedure or independent safety validation is supplied.
Official user manual
Sources
Common battery protection list, distinct from inverter interface protection; no external fuse/breaker rating. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 11, section 2.2.1, Battery Protection
Documented
Cell net weight: 132 kg291 lb converted
Cell net weight tolerance ±5%, as printed.Official datasheet
Sources
Printed system cell net weight with ±5%, separate from whole-system weight.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, EQ3300-L6 column, Cell Net Weight [kg] (±5%)
Documented
Maximum altitude m: 3,000 m9,843 ft converted
Official datasheet
Sources
System datasheet row. Manual module altitude ≤2000 m is a separate module scope, not a substituted system rating.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, Altitude [m]
Documented
Terminal torque: Not documented
Details
DC-output connectors install by pushing until a click. No numeric battery power-terminal torque located. RJ45 connector-body torque is separate. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Location: PDF page 27, section 5.5 B; full 86-page text keyword scan
Not documented
Battery designation: IFpP41/149/102[(20S)6S]E/-10+50/90
Official user manual
Sources
Native cell line wrapping joined. This is not an ordering SKU and its encoded fields are not interpreted.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, Battery designation
Documented
Communication ports (manual): CAN; RJ45
Official user manual
Sources
Native p28 front-view pin table: 1 A-START; 2 GND; 3 /; 4 BMS-CANL; 5 BMS-CANH; 6 BMS-CANH; 7 BMS-CANL; 8 /. Default wire harness PIN to PIN (1→1 through 8→8). Use exact inverter manual at inverter end. No separate EQ-S external RJ45 port or pinout assigned. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim. External EQ-M interface only, including the assembled system through EQ-M; not an EQ-S external port.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF pages 9-10,26 and 28, EQ-M interface, cable procedure and pin table
Documented
Nominal capacity: 50 Ah
Official user manual
Sources
Printed in the cited exact-model table.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Nominal capacity (Ah)
Documented
Certifications (as printed): Safety: IEC 62619; EMC: EN IEC 61000-6-1/2/3/4; Transportation: UN38.3
Official datasheet
Sources
Maker claims only, no issuer listing or file number checked.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, CERTIFICATES
Documented
Communication terminal torque (manual): 1.2±0.2
Official user manual
Sources
Open-end spanner locks connector body onto RJ45 board-end connector. Preserve ±0.2; not power-terminal or grounding torque. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim. External EQ-M interface only, including the assembled system through EQ-M; not an EQ-S external port.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 26, section 5.5 A Step 3
Documented
Installation area m2: 10 m²
Official user manual
Sources
For indoor installations the area must be no less than 10 m². Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 21, section 5.2, indoor installation note
Documented
Mounting orientation (manual): Stack the battery modules one by one.
Official user manual
Sources
Level the bottom module using footstand and spirit level; check level before EQ-M; secure with fixing brackets to wall. Ground must support battery weight; outdoor ground must be hard and leveled. No horizontal mounting permission inferred. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF pages 23-24, section 5.4, Steps 1-6
Documented
Discharge capacity: 35@-10±2°C @1C; 50@25±2°C @1C; 47@55±2°C @1C
Official user manual
Sources
All printed temperature, tolerance and C-rate conditions retained; separate from nominal capacity.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Discharge capacity (Ah)
Documented
Installation location: indoors or outdoors
Official user manual
Sources
Common assembled-system installation context, not separate standalone-module operation.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 21, Clearance note
Documented
Depth of discharge: 90 %
Official user manual
Sources
Printed in the cited exact-model table.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, Depth of discharge (%)
Documented
Ground terminal torque: Not documented
Details
No numeric earth-terminal torque located. Mounting/bracket torque is not substituted. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Location: PDF pages 9-10 and 24-28; full 86-page text keyword scan
Not documented
Dimensions tolerance: ±3/±18/±3
Official user manual
Sources
W*H*D tolerances read from this native table column; no calculated bounds.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, Tolerance (W*H*D) (mm)
Documented
Heat source clearance m: 2 m6.6 ft converted
Official user manual
Sources
At least 2 meters away from heat sources. Bound retained; not exact separation. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 21, section 5.2, heat-source note
Documented
Packing list as printed: NaN E × NaN E
Official user manual
Sources
Native labels read directly; EQ-S and EQ-M packages retained separately. Only explicitly printed *1/*2 quantities are recorded; illustration counts are not quantities. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 20, section 5.1 Items in the package
Documented
Recommended discharge current: 25 A
Official datasheet
Sources
Only discharge direction printed; not recommended charging current.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, Recommend Discharge Current [A]
Documented
Fire protection function: YES
Official datasheet
Sources
Printed in the cited exact-model table.
Official datasheet: Fox ESS EQ3300 datasheet, V1.3, 2026/07/10 Rev V1.3 · July 10, 2026 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 2, Fire Protection Function
Documented
Mounting fastener torque: M6: 3~4 N·m; M5: 3~4 N·m
Official user manual
Sources
Fastener labels and tool torque callouts read directly: M6 callout at bracket fixing Step 5; M5 callout at Step 6. These are mounting/bracket screw values, not numeric power, earth or communication-terminal torque. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 24, section 5.4, Steps 5-6 diagrams
Documented
Mounting hole dimensions: φ: 8 mm; D: >50 mm
Official user manual
Sources
Diameter and drill-depth callout read directly. Strict >50 mm retained; not a conductor size. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 24, section 5.4, Step 4 diagram
Documented
Power cable installation: Not documented
Unresolved inverter-port wording in the manual
PDF page 27 labels the DC output ends DC+/DC- at the battery and BAT+/BAT- at the inverter, then the paragraph beneath that procedure says: Wiring between the battery and the inverter: Insert the connector at the other end of the cable into the BMS port at the base of the inverter and tighten securely. PDF page 28 says Inverter wiring refer to the inverter user manual. This record does not turn the ambiguous paragraph into a DC-to-BMS instruction or choose an inverter-end wiring procedure.
Official user manual
Details
The cited power-cable procedure and following BMS-port paragraph have unresolved inverter-end wording; no completed wiring instruction is selected.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF pages 27-28
Not documented
Storage capacity loss claim: If the battery is stored over one year,5%- 8% of the capacity may lose irreversibly.
Official user manual
Sources
Conditional maker storage claim. No annual degradation or cycle-life rate calculated. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 19, Storage Requirement Note
Documented
Battery module configuration: 1EQ3300-M+5EQ3300-S
Official user manual
Sources
Printed component count; no totals derived.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 48, EQ3300-L6 column, The number of batteries
Documented
External fuse breaker rating: Not documented
Details
No numeric external fuse/breaker rating located. Internal protection and FUSE fault labels are not ratings; DC Switch has no printed ampere rating in the reviewed installation section. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Location: PDF pages 11,17,26-28,36-37; full 86-page text keyword scan
Not documented
Inverter voltage requirement: the battery system voltage must meet the inverter battery port voltage range
Official user manual
Sources
PDF page 16 also prohibits exceeding the inverter battery voltage rating and connecting any incompatible inverter. No exact compatible inverter list is established. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 25, installation warning
Documented
Storage recharge instruction: no more than 0.5 C to the SOC of 50%
Official user manual
Sources
Regular charging according to the table after a long time of storage. No current in amperes calculated. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 19, Storage Requirement recharge paragraph
Documented
Waterproof cover instruction: The waterproof cover must be installed.
Official user manual
Sources
The adjacent note also says the screws must be installed. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 24, section 5.4, Step 6 note
Documented
Power cable vertical length: >30
Official user manual
Sources
Power cable connected vertically; vertical length greater than 30mm. Bending close to terminals may cause poor contact and burnt terminals. This is not a bend radius; no ≥100 mm transferred from another manual. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim. External EQ-M interface only, including the assembled system through EQ-M; not an EQ-S external port.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 28, cable warning
Documented
System composition requirements: 1 EQ-M and a maximum of 5 EQ-S for EQ3300/EQ3300(w)
Official user manual
Sources
Exact EQ3300/EQ3300(w) family count from text. The shared p25 drawing illustrates up to 6 EQ-S layers for broader manual scope and does not override the explicit n=5 for EQ3300. No multiplication of energy/dimensions/weight. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim. PDF page 8 states: EQ-S is the battery module, and EQ-M includes system controller and battery module. These are printed functions, not expanded letter names.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF pages 8 and 25, Product Introduction and installation note
Documented
Fire protection discharge time s: ≤5
Official user manual
Sources
Fire-protection module discharge time, not electrical battery discharge duration. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 12, fire-protection Technical Specifications
Documented
First installation manufacture interval: shall not exceed 3 months
Official user manual
Sources
Interval among manufacture dates of battery modules for first installation, not battery age, life or warranty term. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 19, Storage Requirement first-installation note
Documented
Fire protection activation temperature: ≥170
Official user manual
Sources
Thermal activation of fire-protection module; not a battery operating-temperature limit. Assembled-stack requirement, recorded here as component context; no standalone module clearance, mounting or connector claim.
Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document
Location: PDF page 12, fire-protection Technical Specifications
Documented

Published claims and calculations, not independent test results.

Documents

2 on file

PDF
Fox ESS EQ3300 datasheet, V1.3, 2026/07/10OfficialFox ESSOfficial datasheetJuly 10, 2026
Our copy is kept as private evidence and is not available to download. SHA-256: a3333cb335c6e034829b53a61a1a638db7064d47ce19102beb329f75ec1fe188, captured Nov 4, 2026.
Source details
Revision
V1.3
Revision date
July 10, 2026
Archived copy captured on 2026-11-04.
Location: PDF page1 cover; PDF page2 EQ3300-L2 through L6 system columns and module display labels
Retrieved Nov 4, 2026
Unchanged official Fox ESS PDF from Alternative Research native public download filter. Hash and both pages independently checked. English/Global download label, no country applicability inferred. Used only for exact unsuffixed system columns and exact M/S display labels, not (w) equivalence or module totals. Manufacturer claims, not independent tests.
Open
PDF
Fox ESS EQ Series user manual, V1.0.1, 2026-07OfficialFox ESSOfficial user manual
Our copy is kept as private evidence and is not available to download. SHA-256: da70061843daf4204aabfc0b2932210a2bed9e7fcab295a8356aec5eb6c6d0a6, captured Nov 4, 2026.
Source details
Revision
V1.0.1
Revision date
Not stated
Printed Date 2026-07, with no day stated. Archived copy captured on 2026-11-04.
Location: PDF pages 72-74, exact EQ6000 Plus module and system tables; PDF pages 20-28, package, installation and wiring
Retrieved Nov 4, 2026
Unchanged official Fox ESS PDF from the native public download filter. Module and configured-system quantities remain distinct. General installation diagrams are reference diagrams and the exact inverter manual controls inverter wiring. Printed month has no inferred day. Global is not a country market. Reference app/Web screenshots supply no product facts. Manufacturer claims, not independent tests.
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Evidence score

4/100Missing details20% documented

The Evidence score uses the priorities you choose. It counts published documents, such as certificates and warranty terms, and it compares a documented figure with the best documented figure of the same kind. It does not count owner reviews, and it is not a verdict on product quality or on how many people have reviewed it. A low score can mean little is documented, or that a documented figure is below the best of its kind. Undisclosed data scores 0.

Missing details. This number counts only the evidence recorded so far. The source review for this product is not finished, or the maker has not disclosed enough, so the number can only go up.

Missing for this product: Certificates evidence needed; Warranty term needed; Warranty energy disclosure evidence needed; Cell model disclosure evidence needed.

High-voltage stacked batteries · Rated capacity

The warranty term and the lifetime energy are each scored against the best documented value for a home storage battery: a value earns its share of that best, times the weight. A documented value always earns points; an undisclosed one earns 0.

Lifetime / capacity6,000 cycles4 / 20

Cycle rating disclosed · 20% weight

Documented cycle rating earns 20% of this criterion. More evidence is needed to compare lifetime MWh per kWh.

20 × 0.2 = 4 points.

Official user manual: Fox ESS EQ Series user manual, V1.0.1, 2026-07 Rev V1.0.1 · Checked Nov 4, 2026 · Earlier document

Research pending, 0 points: Certificates, Warranty term, Warranty energy disclosure, Cell model disclosure.

Computed from public specifications and evidence records. Warranty duration is not service quality; certificate evidence points are not a safety rating. Compatibility and installation limits still apply.

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Certificates

No certificates on file. Certificate guide

Parts and accessories

No sourced accessories or replacement parts listed yet.

Model history

Model identity

Model: EQ3300-L6

Manufacturer SKU unknown

No historical observations recorded yet.

Community discussions

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Recalls / legal notices

No recalls or legal notices on file; this is not a complete recall or court search. All notices · Report a notice

Fox ESSProducts, reviews and history

4.0 (1)

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Prices · price basis. * Calculated; estimates labeled. Value needs confirmation; select it for the reason.