Yes, LiFePO4 is an inherently safe chemistry and is the most stable lithium-type battery available on the market. Power Queen lithium cells are UL certified, meeting the highest safety and sustainability standards. Every Power Queen LiFePO4 battery comes with an internal Battery Management System (BMS) that provides protection against under-voltage during discharge, over-voltage during charging, over-current during discharge, over-temperature during both charging and discharging, and short circuits, thereby safeguarding the battery cells. Moreover, Power Queen LiFePO4 lithium batteries have been rigorously tested to ensure they are free from the risk of fire and electric shock, even in harsh environments.

No, Power Queen LiFePO4 lithium batteries are designed solely for energy storage and should not be used as starting batteries. Please do not use them to start any devices.

For more information on the differences between these two types of batteries, read our blog post: "Deep Cycle vs. Starting Battery."

It is recommended to store Power Queen LiFePO4 batteries at 50% state of charge (SOC). If the batteries are stored for long periods, cycle the batteries at least every 6 months. Recommended storage environment: 10℃～35℃ (50℉～95℉), 45%RH～75％RH.

Typical applications include RVs, marine vessels, solar home energy storage, off-grid power systems and industrial equipment.

Yes, Power Queen 12V deep cycle lithium batteries can be connected in series, up to four batteries, to create a 48V battery system.

Note: Do not connect batteries of different chemistries in series or parallel.