Fox ESS EQ5500-S Support-pack Battery Module

The manual expressly names EQ5500/EQ5500(w) in its scope and says: The battery chemistry of these products is Lithium Iron Phosphate. Exact module codes are printed on PDF page 12 and in the individual tables. No cell manufacturer, cell model or scalar property is inferred.

Location: PDF page 4, Notes on This Manual; exact module names on PDF pages 12, 38-39

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Printed for this exact model in the cited table.

Location: PDF page 38, Nominal energy (kWh)

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Printed for this exact model in the cited table.

Location: PDF page 38, Nominal voltage (V)

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Rated capacity as explicitly printed in EQ&TQ manual. EQ Series manual uses Normal capacity (Ah), not nominal or rated; that label is not corrected.

Location: PDF page 38, Rated capacity (Ah)

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Printed for this exact model in the cited table.

Location: PDF page 38, Max. Continuous discharge/charge current (A)

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Row explicitly names discharge/charge in that order.

Location: PDF page 38, Max. Continuous discharge/charge current (A)

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Printed for this exact model in the cited table.

Location: PDF page 38, (CC-CV) Standard charging current (A)

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Printed for this exact model in the cited table.

Location: PDF page 38, Max. charge/discharge current (A)

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Charging cut-off current; not discharge cutoff or an external protection rating.

Location: PDF page 38, Constant current and voltage charging cut-off current (A)

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The table expressly names charge and discharge. Standard charge and peak discharge have separate rows.

Location: PDF page 38, Max. charge/discharge current (A)

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Peak discharge for 60 seconds, as printed; not continuous current.

Location: PDF page 38, Peak discharge Current (60s) (A)

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Printed for this exact model in the cited table.

Location: PDF page 38, Battery voltage range (V)

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Printed for this exact model in the cited table.

Location: PDF page 38, Weight (kg)

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Printed for this exact model in the cited table.

Location: PDF page 38, Dimensions (W*H*D) (mm)

Calculated

Printed for this exact model in the cited table.

Location: PDF page 38, Communication interfaces

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Exact-model specification row in EQ&TQ manual. EQ Series table prints the same range, with (Recommended) on Main-pack and system rows; the separate conditional storage chapter is retained in storage_schedule.

Location: PDF page 38, Storage temperature (°C)

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Maker claims each battery unit has a fire-protection module, not independent fire testing. Separate conflicting firefighting passages p12/p14 remain unresolved. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 9: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 9, section 2.2.2 Fire Protection Function

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Unsuffixed model. Charge 0~55; discharge -10~55. Warm-up versions are recorded separately without scalar-table transfer.

Location: PDF page 38, Operating charge/discharge temperature (°C)

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Printed for this exact model in the cited table.

Location: PDF page 38, Operating charge/discharge temperature (°C)

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Separate printed contexts retained. Odd between±5% wording is preserved, no calculated threshold or voltage inferred. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 14, 37: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF pages 12 and 35, installation and FAQ expanded-capacity requirements

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Only the exact named module display label is taken from the datasheet; no whole-system-only property is transferred.

Location: PDF page 2, Display, exact EQ5500-S label

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Exact named-code statement distinguishes the unsuffixed modules from EQ5500-M (w) and EQ5500-S (w). No ambient/cell-temperature equivalence or new system suffix is inferred.

Location: PDF page 12, exact unsuffixed EQ5500-M and EQ5500-S note

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5~95(No Condensing), as printed.

Location: PDF page 38, Humidity (%)

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Both native diagram and prose preserved separately; wording ambiguity is not resolved by replacing rear 20 with 300. No numerical front clearance invented. Local installation and safety-clearance regulations apply. Module remains exposed to ambient air, cooled by natural convection; covering/shielding may stop operation. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 19: Same native rear ≥20 mm and top/left/right ≥300 mm diagram; different prose uses the figure for distances, rather than repeating ≥300 mm around the module. To ensure proper heat dissipation of the battery pack, a reasonable clearance must be left around it (see the figure above for the specific distance).

Location: PDF page 17, section 5.2 Clearance, diagram and second note

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No address-setting procedure located. Module Addressing failed is a fault label only. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 6, 7, 8, 24, 27, 35, 36: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF pages 6-25,33-34; full 42-page text keyword scan

Not documented

No AWG/mm² power/ground conductor gauge located. Diagram D and R are cable-diameter/bend labels without numerical conductor size. Package OT Terminal label supplies no numeric cable section. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 18, 24, 25, 26, 27: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF pages 16,22-25; full 42-page text keyword scan

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Power-off SOC before storage. Note also requires recharge within 7 days when SOC reaches 0%; permanent faults caused by customer-delayed charging are beyond warranty scope. No warranty duration inferred. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 37: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 35, section 7.3.2 low-SOC storage table

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Salt-affected region within 1000 m of coast or prone to sea breeze, with weather/terrain qualifications. Mounting requires completely waterproof area, hard level floor, wall without noticeable incline, low stable humidity, ventilation, minimized dust/dirt. No market inferred. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 14, 15: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF pages 12-13, sections 3.3 and 3.4

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Recommended storage time not more than 6 months. RH/duration/SOC conditions stay with each row. Range boundary overlap remains as printed. Storage chapter guidance remains separate from model-table recommended/ordinary storage-temperature rows. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 17: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 15, Storage Requirement conditional table

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Maker battery-protection list; inverter-interface protections are separately listed. No external fuse/breaker rating inferred. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 8: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 8, section 2.2.1 Battery Protection Function

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Printed for this exact model in the cited table.

Location: PDF page 38, Altitude (m)

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Power connectors latch by pushing until click. No numeric battery power-terminal torque located. RJ45-body torque is separate. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 25: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 23 DC output procedure; full 42-page text keyword scan

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Indoor installation area must be no less than 10 m². Lower bound retained. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 19: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 17, section 5.2, indoor installation note

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Bottom module leveled with footstand/spirit level; check level before main-pack; secure battery to wall using brackets. L is number of system layers. PDF p21: L≤6, one pair of Item D on Main-pack; L>6, one pair on Main-pack plus additional pair in middle layer of Support-pack modules. Item D is Fixing bracket in p16 package. Ground supports battery weight; outdoors hard and leveled. No horizontal mounting inferred. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 21, 22, 23: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF pages 19-21, section 5.4

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Two official manuals with the same printed revision V1.0.0 and month 2026-07 print different depth-of-discharge figures for this exact model. No publication order, hardware revision, selected percentage or usable energy is inferred. Each claim is retained with its own document and page.

Location: EQ Series PDF page 39; EQ&TQ Series PDF page 38

Sources disagree

No numeric earth-terminal torque located. M5 screw label on p25 is size only; mounting/bracket M5 3~4 N·m p20 is not substituted. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 7, 8, 22, 27: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF pages 7-8,20-25; full 42-page text keyword scan

Not documented

Battery system must be kept at least 2 meters from heat sources. Lower bound retained. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 19: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 17, section 5.2, heat-source note

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Only printed component packages are listed. EQ5500-S is explicitly named under Support-pack Specifications (EQ Series PDF page 39; EQ&TQ page 38), and EQ5500-M under Main-pack Specifications (pages 40 and 39). Only explicit *4 quantities retained; illustration counts not counted. No whole-system package quantities derived. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 18: Same corresponding printed requirement or bounded unknown finding; no source priority selected. Only this named module component package is assigned; no other module or whole-system package is transferred.

Location: PDF page 16, section 5.1 Items in the package

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Native M6 tool torque at Step 5, M5 tool torque at Step 6. Mounting/bracket fastener torques, not battery power or earth-terminal torque. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 22: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 20, section 5.4 Steps 5-6 diagrams

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Printed drill diameter/depth. Strict >50 retained; not cable dimensions. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 22: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 20, section 5.4 Step 4 native diagram

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Maker conditional storage-loss claim, repeated twice on page. No annual degradation calculated. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 17: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 15, repeated storage Note

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No numeric external fuse or breaker rating located. Protection/fault labels and model-table short-circuit current are not external protective-device ratings. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 8, 16, 24, 25, 26, 27, 35, 36: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF pages 8,14,22-25,33-34; full 42-page text keyword scan

Not documented

PDF page 12 also prohibits exceeding inverter battery voltage rating and incompatible inverter connections. No exact compatible inverter list inferred. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 14, 23: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 21, warning

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Battery module stored between -20°C~55°C and recharged regularly according to table after long storage. No current in amperes calculated. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 17: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 15, Storage Requirement paragraph

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Adjacent note also requires screws installed. Do not merge with distinct optional protective cover p24. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 22: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 20, section 5.4 Step 6 note

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p21 additionally prints: Support-pack less than 8(1~8) pieces; drawing prints Support-pack ≤8 Layers. Preserve awkward less-than/inclusive wording without silently changing it. Exact system component counts are on PDF page 40. No per-module scalar derived by dividing system totals. EQ5500 assembled system; on a module record, this describes installation through the assembled stack, not standalone operation. EQ&TQ manual comparison, PDF pages 6, 23: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 6, Product Introduction; PDF page 21, installation note

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Fire-protection module discharge time, not electrical discharge duration. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 10: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 10, fire-protection Technical Specifications

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Interval among battery-module manufacture dates, not warranty, life or maximum battery age. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 17: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 15, first-installation note

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Thermal activation threshold of fire-protection module, not battery operating temperature. Common EQ5500 guidance within the named EQ4800/EQ5500 manual scope. Exact Support-pack = EQ5500-S and Main-pack = EQ5500-M are printed on PDF pages 39 and 40 respectively. EQ&TQ manual comparison, PDF pages 10: Same corresponding printed requirement or bounded unknown finding; no source priority selected.

Location: PDF page 10, fire-protection Technical Specifications

Documented