12v 300 AH Lithium Battery

Simply Lithium 12V 300Ah Self-Heating LiFePO₄ Battery

More energy for longer adventures.

Power your RV, boat, or off-grid setup with the Simply Lithium 12V 300Ah battery. Its Grade A EVE lithium iron phosphate cells provide 3,840Wh of nominal energy—a substantial reserve for compatible house electrical systems, lighting, electronics, and inverter-powered equipment.

Bluetooth monitoring keeps battery information within reach on your phone. Built-in self-heating helps prepare the cells for cold-weather charging, supported by low-temperature charging protection. The integrated smart Battery Management System helps protect the battery throughout charging and use.

Housed in a clean black IP67-rated enclosure, this battery combines generous energy storage with dust-tight protection and resistance to temporary water immersion under specified test conditions.

• Nominal voltage: 12.8V
• Capacity: 300Ah
• Nominal energy: 3,840Wh
• Cells: Grade A EVE LiFePO₄
• Features: Self-heating, Bluetooth monitoring, smart BMS, and low-temperature charging protection
• Enclosure rating: IP67

Simply Lithium — Power made simple.