Amazon.com: Replacement Battery for ILIFE V3s Pro V5s Pro V50 V8s X750, fits Part Number 18650B4-4S1P-AGX-2,14.4V Li-ion 2600mAh/37.44Wh : Industrial & Scientific
Rechargeable Lithium Ion Battery Pack 14.4V For ECOVACS Vacuum - Model INR18650 M26-4S1P
4S1P Battery Pack with Panasonic PF Cells, 2.88Ah, 10A, 14.4V, Line Shape, Customizable - 18650 Battery Pack - Lithium Ion Battery Pack - Voltaplex
4S1P lithium batterypack with Samsung INR18650-35E cells 48,24Wh