This Li-ion rapid charger works with a variety of different size 3.7V batteries.

Includes 2 bays which charge the batteries independent:

Compatible with 10440, 14250, 14430, 14500, 16340, 17500, 17650, 17670, 18490/18500, 18650

Indicator lights alert you when the battery is charging or fully charged and it will auto-shutoff after charging is complete, so the batteries will not over-charge.

Includes charger, US power cable.

Car adapter sold separate - Link

Specs:

Input: 100-240v ~ 50-60Hz
Output: 4.2v 500ma
International Input Plug Type: IEC-60320-C7