MS safety protection with fuel gauge Main Characteristic 1. Protection of overcharge, over discharge, over current for the cells of 6S LiFeO4 pack. Different ports for charge and discharge. 2. Recover from over voltage, under voltage of every cell. 3. Supply temperature protection during charge and discharge, in addition, keep charge and discharge temperature separately. 4. Supply two stage discharges over current protection, one stage charge over current protection. 5. Supply protection of hardware discharge overload and charge and discharge short-circuit, relief the load or charger. 6. Passive charge balance which can make the cycle life longer. Balance the start voltage and current. The balance voltage difference can be set. Performance curve of the cell 1. Rated discharge curve Conventional capacity of 26650 LiFeO4 cell is 3Ah, we can make it 3.3Ah, in addition, we can see from the following rated discharge curve. No matter discharged at 0.5C or 5C, the capacity is between 3.3Ah to 3.5Ah, have a good discharge platform. 2. Low temperature performance The discharge capacity is 3298mAh at 0.2C current and -10 ， the capacity at normal temperature is 3472mAh, low temperature discharge rate is 94%.