LiFePO4 18650 cells side by side 6.4V 1500mAh rechargeable lithium battery pack - Advanced Professional Powerful Lithium-ion Battery-LFP batteries -battery monitors manufacturer
GTK rechargeable LiFepo4 6.4V 7Ah 10Ah 12Ah 16Ah 20Ah lithium battery for solar light LED lamp power tools electric toy+Charger|battery pack|battery high capacitylithium car battery - AliExpress
LiFePO4 18650 Battery: 6.4V 1500mah (Flat, 9.6Wh, 4 A rate ) with PCB & Polyswitch