Manufacturer and seller images. Configuration examples may include additional equipment.
Image source: FIRMAN Power Pack+ 1000 (B104201) expansion battery, product imageNo sellers found.
FIRMAN's ordering SKU, printed as "sku":"B104201" in the storefront's JSON record captured on September 26, 2026.
Official store listing: FIRMAN Power Equipment store Checked · Earlier documentLocation: product.variants[].sku
Documented
Printed as "Built with Lithium Iron Phosphate technology, the Zero-E Battery". The Features section separately prints "1040 Watt-Hour Rechargable Lithium Ion Battery".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page description
Documented
Converted: 1040 Wh / 1000 Wh per kWh
1040 Wh expressed in kWh.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page description
Converted
Printed as "1040WH Capacity 1 HOUR to 80% Quick Charge 41.6 V 25 Ah".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Features
Documented
Printed as "1040WH Capacity 1 HOUR to 80% Quick Charge 41.6 V 25 Ah".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Features
Documented
Converted: 200 W / 1000 W per kW
200 W expressed in kW.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Effortlessly Charge
Converted
FIRMAN's manual prints an MPPT input range of 11V-50V and its product page prints 10V - 70V for the B104201.
Printed as "input voltage range (11V-50V) of MPPT Solar Charger." in FIRMAN Power Pack+ 1000 (B104201) operator's manual, English, Manual, solar charging. Revised on 1 October 2026: FIRMAN's manual, the primary source, gives the MPPT solar charger input range as 11V-50V; the product page prints 10V - 70V.
Printed as "MPPT Charger 400W max. — 95% MPPT Efficiency Input:10V - 70V".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Manual, solar charging
Documented
Printed as "delivers safe, reliable performance with over 4,000 charge cycles". A lower bound as printed; the Features section prints "Over 4K Cycles to 80%+ Charge". Test conditions are not stated.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page description
Documented
FIRMAN's manual prints 28.6 lbs (13 kg) and its product page prints 26.5 lbs for the B104201.
Printed as "28.6lbs (13 kg)" in FIRMAN Power Pack+ 1000 (B104201) operator's manual, English, Manual, specifications, Weight. Revised on 1 October 2026: FIRMAN's manual, the primary source, prints 28.6 lbs (13 kg); the product page's "Weighs only 26.5 lbs" differs.
Printed as "Weighs only 26.5 lbs"; the pound figure is converted to kilograms.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Manual, specifications, Weight
Documented
2 specs not documented yet: usable energy, dimensionsHelp fill in ›
Printed as "Built with Lithium Iron Phosphate technology, the Zero-E Battery". The Features section separately prints "1040 Watt-Hour Rechargable Lithium Ion Battery".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page description
Documented
Converted: 1040 Wh / 1000 Wh per kWh
1040 Wh expressed in kWh.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page description
Converted
Printed as "1040WH Capacity 1 HOUR to 80% Quick Charge 41.6 V 25 Ah".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Features
Documented
Printed as "1040WH Capacity 1 HOUR to 80% Quick Charge 41.6 V 25 Ah".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Features
Documented
Converted: 200 W / 1000 W per kW
200 W expressed in kW.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Effortlessly Charge
Converted
FIRMAN's manual prints an MPPT input range of 11V-50V and its product page prints 10V - 70V for the B104201.
Printed as "input voltage range (11V-50V) of MPPT Solar Charger." in FIRMAN Power Pack+ 1000 (B104201) operator's manual, English, Manual, solar charging. Revised on 1 October 2026: FIRMAN's manual, the primary source, gives the MPPT solar charger input range as 11V-50V; the product page prints 10V - 70V.
Printed as "MPPT Charger 400W max. — 95% MPPT Efficiency Input:10V - 70V".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Manual, solar charging
Documented
Printed as "delivers safe, reliable performance with over 4,000 charge cycles". A lower bound as printed; the Features section prints "Over 4K Cycles to 80%+ Charge". Test conditions are not stated.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page description
Documented
Published claims and calculations are not independently tested lifetime output.
FIRMAN's manual prints 28.6 lbs (13 kg) and its product page prints 26.5 lbs for the B104201.
Printed as "28.6lbs (13 kg)" in FIRMAN Power Pack+ 1000 (B104201) operator's manual, English, Manual, specifications, Weight. Revised on 1 October 2026: FIRMAN's manual, the primary source, prints 28.6 lbs (13 kg); the product page's "Weighs only 26.5 lbs" differs.
Printed as "Weighs only 26.5 lbs"; the pound figure is converted to kilograms.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Manual, specifications, Weight
Documented
Printed as "Stack up to 10 Power Pack+ 1000s to your ZERO-E". The page also prints "Scalable up to 10 expansion packs (with ZERO-E Head Unit)".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Features
Documented
Printed as "USB-C (Bidirectional x 1) 5V⎓3A/9V⎓3A/12V⎓3A/15V⎓3A/20V⎓4.95A 99W". The page also prints "DC Input Port (XT60) Rated up to 45.5V/20A" and "Expansion Port 41.6V / 65A max.".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Effortlessly Charge
Documented
Printed as "AC Charger 200W — Input: 110V - 230V, 50/60Hz". Charging the expansion battery on its own.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Effortlessly Charge
Documented
Printed as "Adding 1,040Wh of capacity to your FIRMAN Zero-E Energy Storage System". The page also prints "1040 Watt-Hour Rechargable Lithium Ion Battery" and "1040WH Capacity".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page description
Documented
Printed as "MPPT Charger 400W max. — 95% MPPT Efficiency Input:10V - 70V".
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Product page, Effortlessly Charge
Documented
Charged Reviews classified this product from the documents it is based on. It is our own grouping, not a manufacturer claim.
Printed as "Make sure both Power Pack +1000 and ZERO E Portable Power Station are turned off before stacking.". Classified as Portable expansion from the maker's own words for this model (PM decision, October 13, 2026: an expansion or extra battery for a power station is Portable expansion).
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentLocation: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English, Operation, Power Pack +1000 Stacking, page 12 (image-only page, read by OCR)
Published claims and calculations, not independent test results.
FIRMAN's Power Pack+ 1000 operator's manual (PDF page 2, read from a rendered image) prints a "Supplier's Declaration of Conformity, 47 CFR § 2.1077 Compliance Information" for "FIRMAN POWER PACK +1000 B104201" and states "This device complies with Part 15 of the FCC Rules" and that it "has been tested and found to comply with the limits for a Class B digital device". No FCC ID or test report was read. Manufacturer claim only.
Manufacturer document
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentLocation: PDF page 2 (FCC declaration); PDF page 16 (warranty)
Retrieved
The English operator's manual linked from FIRMAN's B104201 product page ("B104201 Operators Manual (English)"), captured on September 26, 2026. The PDF has no machine-readable text; its pages were rendered to images and read. The warranty (SERVICE - WARRANTY, PDF page 16) and the FCC Supplier's Declaration of Conformity (PDF page 2) are quoted from the rendered pages without a machine check. It prints no specification table. Manufacturer claims, not independent tests.
Archived copy of a document published by FIRMAN Power Equipment. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what FIRMAN Power Equipment published. Original address: https://cdn.shopify.com/s/files/1/0601/8976/9969/files/Power_Pack_1000_Manual_English.pdf?v=1657648361. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: f9e34449746eecde9ba3a2d56d3f8ad4f9fef25fa4c643d30e99509c2c526bd9
Location: Description, Features, Effortlessly Charge section; product gallery
Retrieved
FIRMAN's own US product page for the Power Pack+ 1000 (B104201), captured on September 26, 2026; it carries no revision date. Its feature and charging sections are the source for the figures recorded here, because its Specifications tab prints "No specifications available for this product" and the linked operator's manual has no machine-readable text. It publishes the product photograph. Manufacturer claims, not independent tests.
Earlier revisions, archived captures and copies published by someone other than the manufacturer. Every one stays reachable.
Archived copy of a document published by FIRMAN Power Equipment. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Archived copy, unaltered, kept as a record of what FIRMAN Power Equipment published. Original address: https://cdn.shopify.com/s/files/1/0601/8976/9969/files/Power_Pack_1000_Manual_English.pdf?v=1657648361. Copyright and takedown
Embedded dates are file metadata, not independent proof of publication.
SHA-256: f9e34449746eecde9ba3a2d56d3f8ad4f9fef25fa4c643d30e99509c2c526bd9
Quoted from the rendered warranty page: "This warranty only applies to the original purchaser and is not transferable."
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentLocation: Operator's manual, SERVICE - WARRANTY (PDF page 16, rendered image)
Documented
Quoted from the rendered warranty page: "one(1) year(parts and labor) and 3 years (parts and technical support) from the original date of purchase".
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentLocation: Operator's manual, SERVICE - WARRANTY (PDF page 16, rendered image)
Documented
The manual's warranty page is headed "FIRMAN 3 Years Limited Warranty" and prints "FIRMAN warrants to the original purchaser that the mechanical and electrical components will be free of defects in material and workmanship for a period of one(1) year(parts and labor) and 3 years (parts and technical support) from the original date of purchase" (read from a rendered image, not machine-checked). The product page prints "3-Year Warranty". Labor is covered for the first year only.
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentOfficial product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentLocation: Operator's manual, SERVICE - WARRANTY (PDF page 16, rendered image); product page, Features
Documented
No sellers found.
No seller price history.
No reviews yet
Own one? A verified review needs a receipt and a serial number photo, and counts 19× in the owner rating.
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 energy disclosure evidence needed; Cell model disclosure evidence needed.
48 V · Portable expansion · Expansion · Rated capacity
The warranty term and the lifetime energy are each scored against the best documented value for an expansion battery: a value earns its share of that best, times the weight. A documented value always earns points; an undisclosed one earns 0.
3 years · 20% weight
3 of 10 years, the best documented for an expansion battery (printed by the maker): Anker SOLIX BP2700 Extension battery (2688Wh)
The manual's warranty page is headed "FIRMAN 3 Years Limited Warranty" and prints "FIRMAN warrants to the original purchaser that the mechanical and electrical components will be free of defects in material and workmanship for a period of one(1) year(parts and labor) and 3 years (parts and technical support) from the original date of purchase" (read from a rendered image, not machine-checked). The product page prints "3-Year Warranty". Labor is covered for the first year only.
30 / 100 × 20 = 6 points.
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentOfficial product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentCycle 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 product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentResearch pending, 0 points: Certificates, 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.
FIRMAN's Power Pack+ 1000 operator's manual (PDF page 2, read from a rendered image) prints a "Supplier's Declaration of Conformity, 47 CFR § 2.1077 Compliance Information" for "FIRMAN POWER PACK +1000 B104201" and states "This device complies with Part 15 of the FCC Rules" and that it "has been tested and found to comply with the limits for a Class B digital device". No FCC ID or test report was read. Manufacturer claim only.
Models: B104201
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentFIRMAN's own storefront record for the B104201 carries the tag "certification:cETL" (printed as certification:CARB, certification:cETL, certification:EPA...). These are storefront filter tags, not a certificate: no control number, certificate, standard or issuer record is printed or was read. cETL is an Intertek listing mark. Manufacturer claim only.
Models: B104201
Official store listing: FIRMAN Power Equipment store Checked · Earlier documentFIRMAN's own storefront record for the B104201 carries the tag "certification:CARB" (printed as certification:CARB, certification:cETL, certification:EPA...). These are storefront filter tags, not a certificate: no control number, certificate, standard or issuer record is printed or was read. CARB and EPA certifications usually concern engine emissions; the tag is recorded as printed without judging whether it applies to a battery product. Manufacturer claim only.
Models: B104201
Official store listing: FIRMAN Power Equipment store Checked · Earlier documentFIRMAN's own storefront record for the B104201 carries the tag "certification:EPA" (printed as certification:CARB, certification:cETL, certification:EPA...). These are storefront filter tags, not a certificate: no control number, certificate, standard or issuer record is printed or was read. CARB and EPA certifications usually concern engine emissions; the tag is recorded as printed without judging whether it applies to a battery product. Manufacturer claim only.
Models: B104201
Official store listing: FIRMAN Power Equipment store Checked · Earlier documentFIRMAN's Power Pack+ 1000 operator's manual (PDF page 2, read from a rendered image) prints a "Supplier's Declaration of Conformity, 47 CFR § 2.1077 Compliance Information" for "FIRMAN POWER PACK +1000 B104201" and states "This device complies with Part 15 of the FCC Rules" and that it "has been tested and found to comply with the limits for a Class B digital device". No FCC ID or test report was read. Manufacturer claim only.
Manufacturer document
Official instruction manual: FIRMAN Power Pack+ 1000 (B104201) operator's manual, English Checked · Earlier documentNo sourced accessories or replacement parts listed yet.
Marketing name printed on the FIRMAN product page.
Official product page: FIRMAN Zero E Expansion Power Pack +1000 (B104201) product page (September 26, 2026 capture) Checked · Earlier documentManufacturer SKU B104201 · US market
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