The 1.5V 4000mAh D-Size Rechargeable Lithium-Ion Battery is USB Type-C chargeable. Using the supplied USB Type-C cable you can charge the battery by plugging the cable into the USB Type-C port on the positive terminal of the battery. Please note: One Beston 1.5V 4000mAh D-Size Rechargeable Lithium-Ion Battery battery included.
