Samsung EB-PJ200B

2100 Mah Battery Pack - Black Easy to Use
To begin charging, plug in a USB charging cable like the included USB - Micro USB charging cable to the USB output port (larger rectangular port) on the battery pack and connect the opposite end of your charging cable (whether Micro USB or other) to your smartphone or other electronic device. Your device will immediately begin to charge. For recharging the battery pack itself, plug a Micro USB charger into the Micro USB port of the battery pack.

Safe Charging
Official Samsung lithium ion batteries are built-in to ensure an optimal charging experience for a range of Samsung or non-Samsung devices.

Status Monitoring
The 2,100mAh Battery Pack mini hosts an LED indicator that displays remaining charge when the status button next to the light is pressed. The LED also lights up when the battery pack is charging and blinks to indicate how close the battery is to being fully charged.