Features sturdy locking mechanism to keep the battery handle firmly attached, accidental detachment while filming Equipped with multiple safeguards including overcurrent, overvoltage, short circuit, undervoltage, and over temperature protective to ensuring safe operational during use Specifically designed for Pocket 3 / 4, this battery handle features a built in 1600mAh high capacity battery to significantly extend your filming time without frequent recharging 5V 3A fast charging via USB Type C port, allowing quick power replenishment so you can get back without long delays Lightweight and ergonomic design ( 8x3.2x2.7cm) makes it easy to carry and use, enhancing mobility for on the go photography and videography