How to Charge LiFePO4 Battery?

To charge a LiFePO4 battery, you can use one of the following methods:
1. Use a Lithium Iron Phosphate battery charger or a smart charger that can limit the current and voltage.
2. Use an alternator and a DC-DC charger for RVs and boats with a battery storage setup.
3. Use a solar panel and a charge controller that can regulate the power input.
4. Use a power supply and calculate the C rate, current limit, and charged voltage of your battery pack.

How Long does it Take to Charge a LiFePO4 Battery?

The time it takes to charge a LiFePO4 lithium battery depends on the capacity of the battery and the output of the charger. For example, a 12V 100Ah LiFePO4 battery can be charged from empty to full in 10 hours with a 10A charger.

However, it’s important to note that lithium LiFePO4 batteries can charge much faster than traditional lead-acid batteries. Stage 2 of charging, which can take up to 7 hours in a lead-acid battery, only takes about 15 minutes in a LiFePO4 lithium battery.

Remember, it’s crucial to use a charger that’s compatible with lithium LiFePO4 batteries to prevent damage or undercharging. Always ensure the charging environment has adequate ventilation and avoid charging the battery below 0°C / 32°F to prevent capacity reduction.

Rules of thumb, always charging a lithium iron phosphate battery with a lithium iron phosphate battery charger.

LiFePO4 Battery Charge Voltage Chart