Lightweight 2,3 Kg battery sized 30 x 10,5 x 4,7 cm - up to 3 pcs on one scooter adjustable! Only chargeable with the special lithiumbatterycharger. You need to have a suitable TRAVELSCOOT lithiumcharger! (This size is not for air traveling allowed due to the energysize of > 300 Wh - use the smaller lithiumbatteries for this purpose). Range with this battery is up to 30 Kilometers or 20 mls.