ReNext Battery Charger for 14500 Rechargeable Li-Ion 3.6V 3.7V Battery Charger for 14500 Rechargeable Li-Ion 3.6V 3.7V Complete Recharge within 2 TO 4 Hours Input Voltage (AC): 100-240V 50-60HZ. Compatible with 14500 batteries. Incorrect Polarity Protection.