The NiteCore Nl1475R Micro-USB rechargeable 14500 Li-ion battery has a capacity of 750mAh. This battery can handle up to 2V to power electronic devices. You can easily charge the battery with the help of the built-in micro-USB charging port. As such you don't need an individual charger. The only thing you need is a USB-cable. You can see the charging status on the battery. The red indication light turns green when the battery is fully charged. Charging has never been this easy.