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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, view 2ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection, view 3ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection, view 4ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection, view 5ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection, view 6
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ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery with Bluetooth and Low-Temp Protection

$679.99$799.99Save 15%

In stock at eco-worthy.com

The EnergyRock 12V 400Ah is a metal-cased LiFePO4 battery with built-in mounting feet, Grade A cells, a 250A BMS, Bluetooth monitoring, and cold-weather charge protection. The URL lists 5120Wh. At $679.99 it targets RV and van owners who want a large, rugged 12V bank that bolts down without a separate box.

Shop now at ECO-WORTHY →

ECO-WORTHY review·All 51 ECO-WORTHY products·ECO-WORTHY coupons & deals·Visit eco-worthy.com

Price and stock from eco-worthy.com, refreshed daily. We may earn a commission if you buy.

Highlights

  • 400Ah at 12V (5120Wh per the URL)
  • Reinforced metal case
  • Built-in mounting feet
  • 250A BMS with overcharge, heat, and cold-charge protection
  • Bluetooth monitoring

Best for

Van and RV builders wanting maximum 12V capacity in one rugged unit.

Things to consider

  • Weight and dimensions are not stated, and 400Ah batteries are heavy.
  • Cycle rating is not given.
  • 250A BMS limits continuous draw to about 3.2kW at 12V.

Key specs

Price$679.99
Capacity400Ah
BMS250A
CaseMetal with mounting feet
CellsGrade A
MonitoringBluetooth

Our take

Excellent capacity per dollar; ask for weight and size before buying.

ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium… at a glance

BrandECO-WORTHY
Price$679.99 (was $799.99)
Typelithium battery
AvailabilityIn stock at eco-worthy.com
ReturnsDamaged, wrong, or non-working items must be reported within 14 days, and ECO-WORTHY…

Price check

At $679.99, the ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery is mid-range for ECO-WORTHY, whose 51 listed products run $15.99 to $21,000.

It's currently 15% below its listed price of $799.99. Sale prices can end without notice, so check the live price before you order.

Similar items from other brands we track run $4.99 to $149.99.

Buying from ECO-WORTHY

ECO-WORTHY is a strong pick for DIY solar builders and RV owners who want LiFePO4 batteries and complete kits at prices well below the premium brands. Skip it if you want an installer-backed, plug-and-play system with local service. Before buying, read the return terms closely: change-of-mind returns are on you to ship back, and the refund page describes them as a partial refund.

Shipping
Orders process in 1 to 3 business days, then ship in 3 to 5 business days from the US or Canada warehouse (3 to 7 from EU, UK, AU), tracked. Large panel kits ship by freight in 5 to 14 business days.
Returns
Damaged, wrong, or non-working items must be reported within 14 days, and ECO-WORTHY covers return shipping. Other returns are accepted within 30 days in new condition with original packaging, with return shipping paid by the buyer.
Warranty
The FAQ states a 10-year warranty on batteries covering non-human-induced failure. Modified products void the warranty.

Read our full ECO-WORTHY review and shop all products →

Frequently asked questions

Do I need a battery box for the EnergyRock?
ECO-WORTHY says the built-in mounting feet allow install without an extra box.
Can it power a 3000W inverter?
A 250A BMS works out to roughly 3.2kW at 12V, so a 3000W inverter is near the limit.
Is the ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery on sale?
Yes. ECO-WORTHY lists it at $679.99, down from $799.99 (15% off). Sale prices change, so confirm the live price on eco-worthy.com.
Is there a discount on the ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery?
ECO-WORTHY publishes these ways to save: $10 off first purchase for joining; ECO-WORTHY Rewards points; Give $25, get $25 referral; 5% military discount. ECO-WORTHY sets the terms, which can change; our ECO-WORTHY coupons page has the details.
What is ECO-WORTHY's return policy?
Damaged, wrong, or non-working items must be reported within 14 days, and ECO-WORTHY covers return shipping. Other returns are accepted within 30 days in new condition with original packaging, with return shipping paid by the buyer.
How long does ECO-WORTHY take to ship?
Orders process in 1 to 3 business days, then ship in 3 to 5 business days from the US or Canada warehouse (3 to 7 from EU, UK, AU), tracked. Large panel kits ship by freight in 5 to 14 business days.
Does the ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery come with a warranty?
ECO-WORTHY's published warranty terms: The FAQ states a 10-year warranty on batteries covering non-human-induced failure. Modified products void the warranty.
Where can I buy the ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery?
The ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery is sold directly by ECO-WORTHY on eco-worthy.com. The Shop now button on this page goes straight to the product there.
Is the ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery in stock?
Yes. ECO-WORTHY lists it as in stock on eco-worthy.com as of our latest check. Stock and prices refresh throughout the day.
Is ECO-WORTHY a legit store?
ECO-WORTHY is a strong pick for DIY solar builders and RV owners who want LiFePO4 batteries and complete kits at prices well below the premium brands. Skip it if you want an installer-backed, plug-and-play system with local service. Before buying, read the return terms closely: change-of-mind returns are on you to ship back, and the refund page describes them as a partial refund. Our full ECO-WORTHY review covers shipping, returns and what to check before ordering.
Is the ECO-WORTHY EnergyRock 12V 400AH Metal Case LiFePO4 Lithium Battery expensive?
At $679.99 it is mid-range for ECO-WORTHY ($15.99 to $21,000 across 51 products), and similar items from other brands run $4.99 to $149.99.

More from ECO-WORTHY

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