Converted: 10.2 x 6.6 x 8.2 in x 25.4 mm/in, rounded to 0.1 mm
Printed as "Dimensions (Inches) 10.2 (L) x 6.6 (W) x 8.2 (H)" in the WattCycle 12V 100Ah Group 24 LiFePO4 Battery: manufacturer product page; the maker prints inches only, converted to millimeters. Revised on 30 September 2026: The maker prints these dimensions in inches only; the stored millimeters were an unlabeled conversion, now labeled with the printed inches kept (Project Manager, September 30, 2026).
WattCycle prints "RVs M arine Solar Home Storage Golf Cart Trolling M otor Off-Grid W ide Application Solar Energy System Industrial Storage System Home Storage & Power W all Off-Grid System Trolling M otor Boat Electronics Recreational Vehicle" (User manual (12V series), page 14, Application Examples (manual lists "12V 100Ah")). The labels are the maker's own words: Golf cart from "Golf Cart"; Home from "Home Storage"; Marine from "Boat"; Off-grid from "Off-Grid"; RV and van from "RVs", "Recreational Vehicle".
Printed as "Certified: IEC / ROHS / CE / FCC / UN38.3 / Class 9" in WattCycle's own product page, captured on September 25, 2026. A list of marks with no standard numbers, certificate numbers or issuer; recorded as printed, not verified.
Published claims and calculations, not independent test results.
Documents
3 on file
PDF
WattCycle 12V Series LiFePO4 Battery User MaunalOfficialWattCycleOfficial instruction manual
Certificate & compliance claims (3)
UL 1642Manufacturer claim · cellClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
UL 2580Manufacturer claim · cellClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
UN 38.3Manufacturer claim · cellClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
Linked from the product page under "Download User Manual".
Location: Whole document
Retrieved
Manufacturer user manual downloaded from the WattCycle product page on the access date. It establishes the instructions and figures WattCycle publishes for the models it names; it is not a test report and it does not establish certification, stock or price.
Archived copies
Archived copy of a document published by WattCycle. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Location: Section 1, Warranty Period table and note
Retrieved
WattCycle's own warranty policy page as served on September 28, 2026. It sets the base and registration-extended warranty terms by product category (all new LiFePO4 battery models), not per model. Manufacturer terms as published, not an assessment of how claims are handled.
Location: Sections "I. Warranty Commitment" (warranty-period table and registration note), "II. Warranty Claim Process and Fees" (claim steps, fee-responsibility table, refund policy) and "III. Warranty Exclusions (Limitations of Liability)"
Retrieved
WattCycle’s Warranty Policy page, linked from the footer of every page on www.wattcycle.com and captured byte for byte on September 22, 2026. It establishes the terms WattCycle published on the access date: a warranty-period table that gives all new LiFePO4 battery models a five-year base term plus two further years (seven total) on registration within three months of purchase, gives like-new units one year, gives battery cells no warranty at all, and puts chargers, inverters, controllers and wiring cables together in an "Accessories" row with a one-year term; the claim process and its 24-48 hour response promise; a fee table under which WattCycle pays shipping for a confirmed quality defect and the buyer pays it for a change of mind; a refund window of six months; and an exclusion list. It names no individual model, carries no effective or revision date, and reserves WattCycle’s "right of final interpretation", so it fixes no claim outcome and cannot be read as a warranty contract for any one product.
WattCycle 12V 100Ah Group 24 LiFePO4 Battery for RV Solar (WattCycle product page, September 25, 2026 capture)OfficialWattCycleOfficial product page
Source details
Revision
Not stated
Revision date
Not stated
Location: Heading "WattCycle 12V 100Ah Group 24 LiFePO4 Battery for RV Solar"; product summary and Tech Specs tab
Retrieved
WattCycle's own product page at wattcycle.com/products/wattcycle-12v-100ah-group-24-lifepo4-battery, captured on September 25, 2026 for the completeness pass. It establishes what WattCycle printed on that date for WT12V100AH100: the heading, the product summary and Tech Specs tab. Figures read from it are WattCycle's own claims; the page prints no test conditions, certificate numbers (except where quoted) or revision date. Prices and stock on it are not recorded.
Manufacturer product page captured on the access date. It establishes what WattCycle published for this exact stock keeping unit then: the parameter tables it prints and the manuals it links. It is not a test report and it does not establish stock, price or certification.
Archived copy of a document published by WattCycle. Copyright retained by the publisher; kept for reference and verification only, no endorsement implied. To ask for its removal, email legal@chargedreviews.com.
Free replacement or refund for a quality defect confirmed within six months of purchase, free replacement for one confirmed after six months and inside the term; WattCycle pays shipping both ways in either case, after an RMA number is issued
The policy prints "Quality issue (within 6 months) Free replacement/refund WattCycle covers shipping costs" and "Quality issue (after 6 months, within warranty) Free replacement WattCycle covers shipping costs", and states that refunds apply only to quality issues reported within six months, after which the remedy is replacement. A claim starts by e-mailing service@wattcycle.com with proof of purchase; WattCycle promises a reply in 24 to 48 hours and then issues an RMA number. The page fixes no turnaround time for the repair itself and reserves WattCycle’s right of final interpretation.
Location: Warranty Policy page, section II "Warranty Claim Process and Fees", fee-responsibility table and refund policy
Documented
Coverage conditions
Excludes accident, abuse and force majeure; failure to follow the manual; voltage or current mismatch, reverse polarity, wrong fuses or undersized cables; series or parallel connections beyond the permitted limits; mixing with other battery brands; unauthorised disassembly, modification or repair and altered serial numbers; cosmetic wear and natural capacity fade; use beyond the rated cycle life; and damage from more than one year without maintenance charging
Summarised from the seven-part exclusion list on WattCycle’s Warranty Policy page captured September 22, 2026. The policy also states that opening a battery at WattCycle support’s direction does not void the warranty, that the warranty applies only to purchases through official WattCycle channels and authorised distributors, and that valid proof of purchase is required. The page carries no effective or revision date and WattCycle reserves the right to revise it.
Location: Warranty Policy page, section III "Warranty Exclusions (Limitations of Liability)"
Documented
Warranty term
5 years
Unconditional, scored. Not scored: 7 years total, only if the buyer registers the product on wattcycle.com within three months of purchase.Official warrantyPaid link.Sources
Printed as "LiFePO4 Batteries All new battery models 5 years 2 years (7 years total)" under the columns Base Warranty and Extended Warranty (with Registration), with the note "Extended warranty must be activated through product registration on the official WattCycle website within 3 months of purchase." The five-year base term applies without registration; the seven-year total needs registration within three months and is kept below as an alternative. Revised on 1 October 2026: The warranty term is the base term that applies without registration. WattCycle's warranty policy prints a five-year base warranty for all new LiFePO4 battery models and a seven-year total only after registration within three months of purchase; the seven-year figure from the product page is kept below as an alternative, and the registration condition is shown in the extended warranty field.
7 years
Warranty term printed in the product specification table. The full warranty statement was not part of the reviewed page.
The policy prints "LiFePO4 Batteries All new battery models 5 years 2 years (7 years total)" and the note "Extended warranty must be activated through product registration on the official WattCycle website within 3 months of purchase.". The extension is therefore not automatic; a buyer who does not register inside three months keeps the five-year term. Repaired or replaced units do not extend the original period.
$189.99Price as of Nov 12, 2026, 1:40 PM PST, may change
Visit sellerPaid link. As an Amazon Associate we earn from qualifying purchases.
Evidence
Price from the Amazon Creators API for the New-condition featured offer. Price checked .
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon.com at the time of purchase will apply to the purchase of this product.
CERTAIN CONTENT THAT APPEARS ON THIS SITE COMES FROM AMAZON. THIS CONTENT IS PROVIDED ‘AS IS’ AND IS SUBJECT TO CHANGE OR REMOVAL AT ANY TIME.
No major issues so far. Purchased from Amazon Sept 2025 for $170+tax. I did discharge to the 0% cutoff accidentally and didn't attempt charging for a few weeks. The 10A charger I was using wouldn't wake it up, but I connected it to a larger 12v battery (Dumfume 300ah), and that woke it up enough for the 10A charger to start working on it. No issues since then
I found a plastic tote that fits it well, with some space for bus bar and cables, and have it connected to a 2000w Jupiter (Modified Sine Wave inverter from Harbor Freight) and a USB-A/USB-C/12v Aux module. I use it mainly to charge mobile devices when off grid, or for a diesel heater, and only use the inverter when there is low risk of damaging a device (like when it has an AC to DC converter box inline, or it's a simple device with a resistive heater (cheap rice cooker)). I look forward to using it more, so far no obvious degradation, though I've never done testing to confirm capacity or cutoffs.
4/5
AnonymousVerified owner
For now: works as advertised in a tiny solar boat
Reliability
5/5
Build quality
4/5
Ease of install
5/5
For now seems to work fine and well in combination with Victron smartsolar and shunt in my small solar boat powering a 12v 660W Amarew 66lbs trolling motor.
Disclosure: I work in the renewables sector as advisor, but this is a private purchase for my solar boat
It has behaved as expected so far with no issues. Communication with the seller was efficient. Purchase was in August, 2025. I can't comment on long term reliability.
I had ordered the battery on Amazon, with returns shows as not available. When I found it cheaper at WattCyle they efficiently canceled the Amazon order for me.
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 for this product: Certificates evidence needed; Warranty energy disclosure evidence needed; Cell model disclosure evidence needed.
12 V · Case battery · 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.
Printed as "LiFePO4 Batteries All new battery models 5 years 2 years (7 years total)" under the columns Base Warranty and Extended Warranty (with Registration), with the note "Extended warranty must be activated through product registration on the official WattCycle website within 3 months of purchase." The five-year base term applies without registration; the seven-year total needs registration within three months and is kept below as an alternative. Revised on 1 October 2026: The warranty term is the base term that applies without registration. WattCycle's warranty policy prints a five-year base warranty for all new LiFePO4 battery models and a seven-year total only after registration within three months of purchase; the seven-year figure from the product page is kept below as an alternative, and the registration condition is shown in the extended warranty field.
5 years unconditional (not scored: 7 years total, only if the buyer registers the product on wattcycle.com within three months of purchase).
5 MWh/kWh is our own estimate, so it is capped at one third of the criterion: it is scored against the bar but never sets or raises it. The bar is 7.638 MWh/kWh, the best documented for a home storage battery lifetime claim, calculated from maker figures: EG4 WallMount All Weather 314Ah
Our own estimate from cycles and depth of discharge: it is scored against the best documented figure but earns at most one third of this criterion. A figure the maker prints is scored in full.
Not documented, 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.
UL 1642Cell / component onlyClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
UL 2580Cell / component onlyClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
UN 38.3Cell / component onlyClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
UL 1642Manufacturer claim · cellClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
UL 2580Manufacturer claim · cellClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.
UN 38.3Manufacturer claim · cellClaimedListed when checked
WattCycle's 12V Series LiFePO4 Battery User Manual (V1.9, dated 2026.03.02 in its file name, archived by the catalog and refetched byte-identical on September 25, 2026) prints a shared specification table for the models it lists, including "12V 100Ah", with the row "Cell Certifications UL1642/UL2580/UN38.3". The claim is for the cells, not the battery pack. WattCycle publishes no certificate number, certification body or report for it, and no issuer listing was checked. Recorded exactly as the manual prints it.