LiFePO4 Cells / Packs

Lithium Iron Phosphate (LiFePO4, LFE) is new generation Li-Ion rechargeable battery for high power applications, such as EV car , Power Tool and RC hobby. LFP cells feature with high discharging current, non explosive, long cycle life ( >2000@0.2C rate, IEC Standard), but its energy density is lower than normal Li-Ion cell (Li-Co) (higher NiMH cell). LFP cell has 3.2V nominal working voltage and shall be cut-off power at 3.6-3.8V per cell during charging. Please see the table below to see comparison between LFP and other rechargeable batteries. LFP battery has the lowest cost if considering its long cycle life 　 Chemistry Voltage Energy Density Working Temp. Cycle Life Safety Environmental Cost based on cycle life x wh of SLA LiFePO4 3.2V >120 wh/kg -20 - 60°C >2000 (0.2C rate) Safe Good 0.15-0.25 lower than SLA Lead acid 2.0V > 35wh/kg -20 - 40°C >200 Safe Not good 1 NiCd 1.2V > 40wh/kg -20 - 50 °C >1000 Safe Bad 0.7 NiMH 1.2V >80 wh/kg -20 - 50 °C >500 Safe Good 1.2-1.4 LiMnxNiyCozO2 3.7V >160 wh/kg -20 - 40 °C >500 better than LiCo OK 1.5-2.0 LiCoO2 3.7V >200 wh/kg -20 - 60 °C > 500 Unsafe w/o PCM OK 1.5-2.0