Massive Power! KEPWORTH 12V 400Ah LiFePO4 Lithium Battery – 200A BMS, 5.12kW For Solar RV Off-Grid

Ready to go off-grid in a big way?

This KEPWORTH 12V 400Ah LiFePO4 lithium battery is an absolute beast.

With a built-in 200A BMS (Battery Management System), it delivers a massive 5.12kW of power—perfect for serious solar setups, RVs, backup systems, or off-grid cabins.

It's rated for over 4000 life cycles (some say up to 15,000!) and comes with a 5-year warranty.

It charges at 14.1V and handles continuous discharge up to 200A (with 400A surges for 5 seconds).

Plus, it's water-resistant and portable enough to move around.

Whether you're living the van life or just want serious backup power, this black beauty has your back.

Operating temp: charge 32-122°F, discharge -4-140°F.

Time to ditch the lead acid!