12V car charger adapters for HID torch L1500, HID torch L2000 and tactical torches L18650 and L500Q.
Often already part of the flashlight kit, ask your reseller or distribution point.
Output voltage (L1500/L2000): 3.6V/450mAh
Output voltage (L18650): 4.2V/600mAh
Output voltage (L500Q): 8.4V/1000mAh