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Battle Born 100Ah 12V LiFePO4 Battery

3.5
SocialScore
Versus

A 1,280 Wh, 12.8 V LiFePO4 drop-in for Group 27 and 31 trays with a sealed IP65 case, a 100 A BMS and a low-temperature charge cut-off.

$799

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SKU: BB10012

Usability

4.7 out of 10
Capacity512.8 V times 100 Ah is 1,280 Wh, on the 1,250 to 1,799 Wh rung
Efficiency241.3 Wh per pound at 31 lb, on the 40 to 45.9 rung
Operating Range5100 A continuous discharge, 1.0C on 100 Ah
  • Surge: 200 A for 30 seconds, then half a second above that
  • Temperature: discharges from -4°F; the BMS blocks charging below 32°F
Lifespan43,000 to 5,000 cycles at 100 percent depth; low figure scored, no end point published
  • Brand note: a Battle Born article says about 75 to 80 percent remains after 3,000 cycles
Features4Low-temperature charge cut-off, IP65 case, 4 in series; no Bluetooth or comms port
  • Parallel: no limit on batteries in parallel, per the manual
  • Terminal: Battle Born describes a passive thermal interrupt in the positive terminal
Verification6Intertek ETL Listed to UL 2054 by model; no 9540A or CEC entry
  • Intertek: UL 2054 Listed by model under Dragonfly Energy Corp.
  • Also listed: UL 62133-2 and Class I Div 2 (not counted)
  • CEC battery list: not listed
  • UL 9540A: no published report found
Warranty & Support710 years; the last two give a 30 percent replacement discount
  • Shipping: the owner pays freight to Battle Born, which pays the return
  • List: $799.00 at battlebornbatteries.com
  • Folded: GC2 case $799.00; Smart Bluetooth BB10012i and BBGC2i $949.00

Sealed 100 Ah drop-in, heavy for its size

  • What it is: a 12.8 V, 100 Ah LiFePO4 drop-in for Group 27 and 31 trays, in a sealed IP65 case
  • The trade-off: eight years of full replacement, but heavy for 1,280 Wh and blocked from charging below freezing
  • In the box: the battery and a stainless bolt, washer and Nylok nut kit
  • Look elsewhere for: Bluetooth on this version, charging below freezing, or a lighter 100 Ah pack

Strengths

  • Usable to full depth
  • Sealed case rated for water spray
  • Flexible series and parallel wiring
  • Long full-replacement period
  • Drop-in for common lead-acid trays

Drawbacks

  • Heavy for its capacity
  • No charging below freezing
  • No Bluetooth or comms port on this version
  • Last warranty years only a discount
  • Positive-terminal heating reports under dispute
  • Owner pays freight on warranty returns

Social score

3.5 out of 10
Reddit3 out of 10
Complaints
  • Positive terminal overheating under load (December 2025)
  • Company called the melting a thermal failsafe (December 2025)
  • Expensive and poor build quality, per one thread (December 2025)
Read the full summary
  • Design flaw: December 2025 posts in r/overlanding, r/SolarDIY and r/VanLife describe the 100 Ah's positive terminal overheating under load as the plastic between terminal and busbar softens
  • Company response: an r/batteries post faults Battle Born's reply that the terminal is a purpose-built thermal failsafe (December 2025)
  • Build quality: an r/diySolar thread is titled 'Serious issues with BattleBorn Batteries. Expensive and poor build quality' (December 2025)
Google3 out of 10
Liked
  • Measured 110.5 Ah average in a 2021 test (California SkYs)
  • No problems since 2019, per two owners (February 2026)
Complaints
  • Loose positive terminals from heat, per Battle Born's finding (August 2023)
  • Bank shut down at a 120 A start (August 2025)
  • Return shipping and inspection cost on claims (2025-2026)
Read the full summary
  • DIY Solar Forum: an owner of four BB10012s bought in 2020 says Battle Born found loose positive terminals from heat build-up and called them beyond repair; another says a similar claim was denied (August 2023)
  • Shutdown: an owner of three reports every positive post loose inside, the bank shutting down at a 120 A air-conditioner start, and Battle Born asking him to pay shipping and inspection (August 2025)
  • Airstream Forums: a pair bought in 2023 failed after storage, one reading 8.4 V, and the owner was quoted over $400 to return it for inspection (early 2026)
  • Long service: two Airstream owners report no problems running Battle Born batteries since 2019 (February 2026)
  • California SkYs: measured an average of 110.5 Ah over three capacity tests of a 100 Ah unit (October 2021; Amazon associate links)
YouTube2 out of 10
Complaints
  • 26.8 to 53.6 Ah from 100 Ah units at 99 A (July 2026)
  • Two of four terminals melted at 99 A (July 2026)
  • Four of six units failed in four years (January 2026)
Read the full summary
  • Will Prowse: tore down a used 100 Ah and showed a loose positive-terminal connection with a melted plastic spacer, the terminal overheating under charge (December 2025)
  • Nine-year test: of 12 units bought in December 2017 he discharged four at 99 A and got 26.8 to 53.6 Ah, and two terminals melted (July 2026, about 287,000 views)
  • Disclosure: every Prowse video discloses paid promotion or free product and affiliate links; Battle Born says it paid his company over $200,000 in affiliate and advertising fees over six years
  • Lawsuit: Dragonfly sued Prowse for trade libel in June 2026 over these videos; the allegations are unproven, so his findings are not independent in either direction
  • Grand Adventure: four of six 100 Ah units bought in 2021 and 2022 failed by summer 2025, and the owner declined the approved warranty return over its cost and risk (January 2026, about 87,000 views)
  • Disclosure: that video carries a retailer sponsorship
AmazonProduct-line6 out of 10

Ratings: Battle Born's Amazon file shared by its heated 50 Ah, 75 Ah, 100 Ah, GC2 and 270 Ah listings reads 4.1 from 874 ratings, 72 percent five-star against 18 percent one-star (read October 2026)

User reviewsNot scored

The retailer pool is blank: no US retailer listing of a Battle Born product shows ten native product reviews.

Trustpilot

Trustpilot rates battlebornbatteries.com 2.8 from 3 reviews on an unclaimed page with no invited reviews, two of them one-star and the latest from May 2025 (October 2026).

Track record
  • The BBB rates Dragonfly Energy, which lists Battle Born Batteries as an alternate name, F on 4 complaints in three years, not accredited (October 2026).
  • No CPSC or Health Canada recall names Battle Born or Dragonfly Energy, searched in October 2026.
  • In June 2026 Dragonfly Energy filed a trade libel suit in Nevada against reviewer Will Prowse over his Battle Born videos; it was unresolved in October 2026.
  • A consumer class action against Dragonfly Energy was moved to federal court in California in April 2026, unresolved in October 2026.
Not countedExcluded
  • Not counted in any pool: battlebornbatteries.com's own reviews and AI review summary, and the Battle Born and Dragonfly Energy YouTube channels and Facebook groups.
  • Also not counted: Battle Born staff posts, any brand-run subreddit, dealer and installer pages, and ambassador and affiliate programmes such as Explorist.life.
Brand-level

2.8 on Trustpilot, an F from the BBB, no recalls

Specs

  • Capacity1,000-1,499 Wh
  • AC OutputNot applicable
  • System Voltage12 V
  • Panel PowerNot applicable
  • Charge CurrentNot applicable
  • Safety ListingUL 2054 listed
  • Cell TypeNot applicable
  • Low-Temp ChargingLow-temperature cut-off
  • Warranty10 Years
  • MonitoringNone
  • Weight31.0 lb

At a glance

  • 12.76 x 6.86 x 8.95 in
  • Brass flag terminals
  • Cylindrical cells
  • Stainless bolt kit in box
  • Battle Born Batteries is the brand of Dragonfly Energy Holdings Corp. of Reno, Nevada (Nasdaq: DFLI), a company founded in 2012.
  • Dragonfly Energy acquired the Dakota Lithium brand's assets in July 2026 and runs that brand separately from Battle Born.

It sells with a cart at battlebornbatteries.com, through dealers and installers on its dealer locator, and on Amazon US, where Amazon.com sells its 100Ah battery.

The Battle Born BB10012 is a 12.8 V, 100 Ah LiFePO4 battery built from cylindrical cells, storing 1,280 Wh. Its BMS allows 100 A continuous discharge and 200 A for 30 seconds, with a maximum charge current of 50 A at 14.2 to 14.6 V and a 13.4 to 13.8 V float.

The manual gives charging at 32 to 131°F and discharging at -4 to 140°F, with a low-temperature charge cut-off and an IP65 case. It measures 12.76 x 6.86 x 8.95 in, weighs 31 lb and has brass flag terminals with a 3/8 in hole.

It wires up to four in series for 48 V and without limit in parallel, and the manual calls for a current surge limiter with inverters of 3,500 W or more. The box holds the battery and a finishing hardware kit: four 18-8 stainless 5/16-18 bolts (two 1 in, two 1-1/4 in), four washers and two Nylok nuts.

The same battery comes in a GC2 case (BBGC2, $799.00, 10.31 x 7.28 x 11.02 in), and as the Smart Bluetooth BB10012i and GC2 BBGC2i at $949.00 each.

Researched and edited by Michael Ambrose · Unbroken Ads LLC · How we score

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