2500 Times Cycle Life 3.2v Lifepo4 5500mah 32650 battery Cell 32650 3.2v 6000mah lifepo4 rechargeable battery cell for solar energy system Cylindrical lifepo4 battery cell 32650 4500mAh 3.2v 32650 3.2v Lfp Lifepo4 Battery Cell 6500mah Rechargeable