Package Included:4x 26650 Rechargeable Battery1x chargerDescriptionInput:AC 100V-240V 47/63HzOutput:DC 3.6V/4.2V 1200mABattery Type:2 x 26650 rechargeable batteryCaution:Charger only with 14500 16340 18650 26650 type rechargeable batteries.Battery:Battery Model:26650.Cell type:Li-ion.Voltage (V):3.7V.