ECO-WORTHY EnergyRock 12V 400Ah Metal Case LiFePO4 Battery

28th of 37 we've scored in LiFePO4 Batteries

28th of 37 in LiFePO4

ECO-WORTHY EnergyRock 12V 400Ah Metal Case LiFePO4 Battery

Name: ECO-WORTHY EnergyRock 12V 400Ah Metal Case LiFePO4 Battery
Brand: ECO-WORTHY
SKU: L13080202172

SVT Score, Mid

5.5

Usability4.7/10Social6.3/10The SVT Score is placed on its category's range

Versus

4.7

SVT SCORESRead review

A 5,120 Wh, 12.8 V LiFePO4 battery in a bolt-down metal case with Bluetooth and a 250 A maximum continuous BMS.

$680

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SKU: L13080202172 Category: LiFePO4 Batteries Brand: ECO-WORTHY

Usability

4.7 out of 10

Capacity10.0

It stores 5,120 Wh, so it scores 10 on capacity.

Efficiency6.0

At 90.2 lb on Eco-Worthy's spec table it holds 56.8 Wh per pound, so it scores 6 on efficiency.

Operating Range1.0

Eco-Worthy rates its BMS at 200 A standard and 250 A maximum continuous discharge, scored at the maximum, 0.63C on 400 Ah, with a 300 A peak for 30 seconds, so it scores 1 on operating range.

Better on operating rangePower Queen 24V 125Ah Self-Heating BatteryPower Queen rates its BMS at 125 A maximum continuous discharge. $611.99Scores 5.0

Features4.0

It has built-in Bluetooth, a BMS that stops charging below freezing (charge range 0°C to 55°C), a cut-off rather than self-heating, and series or parallel connection to 4S or 4P with up to eight batteries (2P4S or 4P2S), but no CAN or RS485 port and no published IP rating, so it scores 4 on features.

Better on featuresPower Queen 24V 125Ah Self-Heating BatteryHas self-heating below 41°F with charge current of at least 10 A. $611.99Scores 7.0

Verification2.0

No certifier directory (Intertek, UL Product iQ, Certipedia or the CEC battery list) lists this battery by a model code Eco-Worthy publishes for it, and its page names no safety listing, so it scores 2 on verification.

Warranty & Support4.0

Eco-Worthy's warranty policy gives LFP batteries a 3-year warranty against defects in material and workmanship, with no proration stated, so it scores 4 on warranty and support.

Warranty and returns

Eco-Worthy's warranty page gives most products 1 year and its 12 and 24 V batteries 3 years, for the original buyer only, against 10 years on its 48 V server-rack and PowerMega batteries and 2 years on its all-in-one inverters, both tiered by age.

Better on warranty & supportLiTime 12V 320Ah Mini Battery$829.99Scores 6.0

Lifespan

Eco-Worthy publishes no cycle rating for this battery on its product page or Amazon listing, so it is not scored on lifespan.

Price

$679.99 at eco-worthy.com.

Summary

Metal-Case 400Ah, no cycle rating

The ECO-WORTHY EnergyRock 12V 400Ah Metal Case (L13080202172) is Eco-Worthy's 12.8 V, 400 Ah LiFePO4 battery for RVs, vans and off-grid banks, in a metal case with built-in mounting feet measuring 18.6 x 9.6 x 12.0 in.

Verdict

It suits a buyer who wants the most storage in one bolt-down 12 V case for a van or RV, and who will not need a published cycle life, closed-loop inverter communication or charging below freezing.

Strengths

5,120 Wh in one 12 V battery
Metal case with built-in mounting feet
Bluetooth monitoring built in
Separate low-current safety switch to cut output
Connects to 4S or 4Pup to 8 batteries

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Drawbacks

250 A maximum continuous BMS is 0.63C on 400 Ah
No cycle rating published
No user manual linked on the product page
No CAN or RS485 port and no IP rating published
3-year battery warrantythe store's Up To 10-Year badge covers home-storage models

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Social score

6.3 out of 10

RedditBrand-level6.0 out of 10

Reddit owners mostly report Eco-Worthy batteries holding their rated capacity and are less sure of its electronics. In an r/SolarDIY thread owners said their 100 Ah batteries tested to capacity and that two 12 V 260 Ah batteries in series stayed balanced for a year (February 2024), a UK owner measured nearly 102 Ah from a 12.8 V 100 Ah battery after a year on standby against 104.3 Ah new (June 2025), and in a Renogy-or-Eco-Worthy thread an owner called its batteries and panels fine and its charge controllers and inverters hit and miss (February 2026).

Google6.0 out of 10

Liked

Form factor fits a sailboat install
Installation hardware included
Metal case with removable top

Complaints

Heavier than a LiTime 12V 300Ah
Costs more than two 280Ah metal-case units on sale
Cell configuration not stated by Eco-Worthy

In a DIY Solar Forum thread on the 12V 400Ah (June to July 2026), one owner who bought it for about $500 called the form factor perfect for his sailboat, while other posters said it weighs more than a LiTime 12V 300Ah and costs more than two Eco-Worthy 280Ah metal-case batteries on sale.

YouTubeBrand-level7.0 out of 10

Every tester found carries a tie. Will Prowse, whose videos disclose paid promotion or free product and carry affiliate links, found Eco-Worthy's $799 48 V server-rack battery passed his deep-dive tests (2025, about 154,000 views). Mike Builds, whose Cubix 100 video is marked as paid promotion and links Eco-Worthy's affiliate program, measured 99.08 Ah at 0.2C and called it a beast (July 2026, about 218,000 views). There's A Trick For That, which links the battery through Amazon affiliate links, drew 315 Ah, 105 percent of rating, from a 12 V 300 Ah (April 2026, about 25,000 views).

Amazon6.0 out of 10

Eco-Worthy's Amazon US listing for the 12V 400AH Metal Case (B0H2M9VYD9, sold by ECO-WORTHY US) reads 4.8 from 7 ratings, too few to weigh heavily (October 2026).

User reviewsNot scored

The retailer pool is blank: Walmart lists few Eco-Worthy items, the Cubix 100 with 1 review and the others resold by third-party sellers such as DC HOUSE, and Home Depot, Lowe's and Best Buy carry no Eco-Worthy listing.

Trustpilot

Trustpilot rates www.eco-worthy.com 4.2 from 1,595 reviews on a profile Eco-Worthy claimed in April 2023 and invites its customers to, with 67 percent five-star against 20 percent one-star (October 2026).

Track record

The BBB rates Eco-Sources USA F on 6 complaints and a second, Los Angeles profile, Eco-Worthy Solar Technology, F on 7, neither accredited (October 2026).
No CPSC or Health Canada recall names Eco-Worthy or Eco-Sources, searched in October 2026.

Not countedExcluded

Not counted in any pool: eco-worthy.com's own review widget and community forum, Eco-Worthy's YouTube channel and Facebook pages, the r/EcoWorthy subreddit, its staff posts on DIY Solar Forum, or its Impact, Awin and influencer affiliate programs.

Summary

Brand-level

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

Specs

Capacity4,000-5,999 Wh
AC OutputNot applicable
System Voltage12 V
Panel PowerNot applicable
Charge CurrentNot applicable
Safety ListingNone verifiable
Cell TypeNot applicable
Low-Temp ChargingLow-temperature cut-off
Warranty3 Years
MonitoringBluetooth built in
Weight90.2 lb

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At a glance

M8 terminals
18.6 x 9.6 x 12.0 in
300 A peak for 30 s

Company

ECO-WORTHY is the brand of Xiamen Eco-Sources Technology Co., Ltd of Xiamen, China, which its own pages date to 2007, with a US company, Eco-Sources USA, Inc., in Springfield, Missouri.

Where it sells

It sells direct from eco-worthy.com, which ships US orders from a US warehouse, and through its Amazon and eBay stores and dealers such as Off Grid Stores and Current Connected.

Description

The ECO-WORTHY EnergyRock 12V 400Ah Metal Case (L13080202172; Amazon model L13L400AH-1) is a 12.8 V, 400 Ah (5,120 Wh) LiFePO4 battery with a 10–14.6 V operating range, 14.6 V charging voltage, 200 A standard and 250 A maximum continuous charge and discharge, and a 300 A peak for 30 seconds. Eco-Worthy rates it to charge from 0°C to 55°C and discharge from −20°C to 55°C, with a BMS that stops charging in freezing conditions. It has built-in Bluetooth monitoring, a separate low-current safety switch to cut output without touching the terminals, M8 terminals and a metal case with mounting feet, measuring 470.2 x 242.0 x 304.7 mm (18.6 x 9.6 x 12.0 in) and weighing 90.2 lb (40.9 kg). Eco-Worthy supports 2P, 3P, 4P, 2S, 3S, 4S, 2P2S, 2P3S, 2P4S, 3P2S and 4P2S connections. Eco-Worthy links no user manual on the product page; it is sold as a single unit at this price.