Home Collection ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection
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ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection

ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection

Regular price $689.99
Sale price $689.99 Regular price $799.99
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SKU:

SKU:GW-L13080202172-1

[Built Tough for Safer Installation]Reinforced metal casing delivers superior fire resistance, heat protection, and durability compared to plastic designs. Built-in mounting feet allow secure installation directly in RVs or off-grid systems—no extra battery box needed, saving space while keeping your setup clean and stable.

[One-Touch Safety Power Switch]Equipped with an independent low-current switch, you can safely disconnect power during installation, maintenance, or storage with a single click. It reduces spark risks and minimizes standby power loss, helping preserve battery life over time.

[Built for the Road, Ready for Any Terrain]Rugged steel housing and reinforced internal structure keep the battery stable even under constant vibration. Whether on highways or rough off-road terrain, it stays protected—perfect for RVs, vans, trailers, and mobile power setups.

[Smart Monitoring & Cold-Weather Protection]Stay connected with real-time Bluetooth monitoring of voltage, capacity, and system status right from your phone. The smart BMS also prevents charging in freezing temperatures, helping extend battery lifespan and reliability.

[Premium Cells with Powerful 250A Protection]Powered by Grade A LiFePO4 cells and an advanced 250A BMS, it delivers stable, high-capacity energy with full protection against overcharge, over-discharge, overheating, and short circuits—built for long-term, worry-free performance.

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Power your adventures with this rugged LiFePO4 battery, built with a reinforced metal case for superior safety, fire resistance, and long-term durability. Designed for RVs, vans, and off-grid systems, it features built-in mounting feet for easy installation without extra battery boxes. Stay in control with Bluetooth monitoring and a smart BMS that protects against overcharge, overheating, and cold-weather charging. Equipped with premium Grade A cells and a powerful 250A BMS, it delivers reliable, high-performance energy—even on rough terrain—making it the ideal solution for mobile and off-grid power needs.

Technical Specifications

12v 400ah

Rated Capacity

400Ah

Rated Voltage

12.8V

Operation Voltage

10-14.6V

Standard Charge/Discharge

200A/200A

Maximum Continuous Charge/Discharge

250A/250A

Peak Current

300A/30S

Supported Series-parallel Modes

2P, 3P, 4P, 2S, 3S, 4S, 2P2S, 2P3S, 2P4S, 3P2S, 4P2S

Charging Voltage

14.6V

Dimensions

470.2*242.0*304.7mm(18.6*9.6*12.0inch)

Weight

40.9kg / 90.2lbs

Operation Temperature Range

Charge: 0~55°C / Discharge: -20~55°C

Terminal Type

M8

Case Material

Metal Case

Included in the Box

1.12V 400AH Metal Case LiFePO4 Lithium Battery

2.1xBattery Accessories

  • 5 stars: 1 (50%)
  • 4 stars: 1 (50%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
R
Rolle
Very nice battery with mediocre App

Battery was delivered with Fedex on time! Only 3 days from the warehouse to Washington. Excellent packing. All screws, fasteners and manuals were in the box. You could not do a better job. I charged the battery until one cell went in to cell over voltage protection. Then I top balanced the cells with the BMS. It only took 36 hours to reach 6 mV delta @ 14.5 V. Having in mind that we are dealing with 400 Ah cells that is really fast. The ECO-WORTHY app is at best mediocre. But as it is a JBD BMS you can use XiaoxiangBMS or the Overkill Solar app. Both are a much better. I was surprised that the bluetooth connection worked as good as it does having in mind that the BMS is inside a metall case.

Y
Yeido
Excellent 400Ah Battery with Huge Capacity and Solid Build Quality

I installed the ECO-WORTHY 12V 400Ah LiFePO4 battery in my camper van build, and I have been extremely impressed with the amount of power this battery provides. The biggest reason I chose this battery was the capacity. Having 400Ah in a single battery gives me a huge amount of usable energy without needing multiple batteries taking up valuable space.

With this battery, I can stay off-grid and explore remote areas much longer without constantly worrying about running out of power. It gives me the confidence to run my essential van electronics, lights, refrigerator, fans, and other accessories while camping away from hookups.

One feature I really appreciate is the metal casing. Living in Arizona, summer temperatures can be extreme, and having a durable metal enclosure gives me extra peace of mind compared to a standard plastic battery case. The build quality feels very solid and well suited for an RV or van environment where the battery experiences heat, vibration, and movement.

The built-in 250A BMS is another great feature. Knowing the battery has protection against overcharging, over-discharging, over-current, and temperature issues makes me feel much safer using it in my electrical system.

The Bluetooth monitoring is also very convenient. Being able to check the battery status, voltage, and remaining capacity from my phone makes managing my power system much easier.

Overall, this battery has been a great upgrade for my camper van. The combination of massive capacity, strong metal housing, built-in safety features, and reliable performance makes it a great choice for anyone building an RV, camper van, or off-grid power system. I’m excited to spend more time exploring remote places knowing I have plenty of power stored.

Highly recommended!

Frequently Asked Questions

Are Eco-Worthy batteries safe for home use?

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All Eco-Worthy Batteries Built with premium Grade A LiFePO4 cells, one of the safest lithium technologies available. Built-in BMS protection prevents overcharge, overheating, and short circuits—making it ideal for residential energy storage.

Will it work with my inverter/solar system?

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Yes. Our batteries are designed to be widely compatible with most 48V inverters and solar systems used in U.S. homes. For best performance, we recommend checking your inverter’s communication protocol or contacting our support team before purchase.

How much power do I actually need for my home?

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It depends on your usage: 5–10 kWh → essentials (fridge, lights, WiFi); 10–20 kWh → partial home backup; 20 kWh+ → whole-home coverage; Our systems are scalable, so you can start small and expand anytime.

Can I expand the system later?

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Absolutely. Eco-Worthy batteries support parallel expansion, allowing you to increase capacity as your energy needs grow—without replacing your existing system.

What kind of warranty and support do you offer?

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We provide up to a 10-year warranty on key battery models, along with U.S.-based support. Our team assists with installation guidance, troubleshooting, and system planning to ensure a smooth experience.