The initial charging is key factor for long term balanced LiFePO4 battery pack after you purchase the cells!
Each LiFePO4 cell is charged for only 40 - 60% due to transportation rules. All cells in pack must be charged in full before first use. The single cell chargers are suitable for the initial charging
. GWL Power brings you new single cell 3.65V 5A charger
for resonable price. Please see more details on product page