The external battery Hoco J100A offers a capacity of 20000 mAh, allowing it to recharge mobile devices multiple times. The model is made in black with a solid plastic body, measuring 138x69x27 mm, making it easy to fit in bags or pockets. Two USB ports allow charging of two devices simultaneously with a maximum output current of up to 2100 mA. To save time, the battery is equipped with a fast charging function. An energy level indicator on the body allows monitoring of remaining battery capacity. The battery charges from a USB source in 8 hours and has protection against overcharging and short circuits. This battery is manufactured in China and comes with a user manual.