Insten Compact Battery Charger Set for CR123A 16340 3.65V 600mAh Rechargeable Battery Keep your battery charged at home and on-the-go with this compact battery charger. Compact size: 8.5 X 4.7 X 3.8 cm/ 3.3 X 1.8 X 1.5 inches. Input: AC 100V-240V 50/ 60 HZ. Output: 3.65V 600mA. Universal compatible: can be used worldwide with adapter. Smart LED indicator shows charging status. Can charge two 16340 or CR123a batteries at one time. Quick charge with automatic constant current control prevents battery from overcharging, short circuiting, and electronic shock.