【Hot-Swappable Magnetic Battery】Easily attach and detach via magnetic design for seamless battery replacement without powering down. 【Lightweight and Balanced】Only 140g, helps evenly distribute weight on the head for a more comfortable VR experience. 【Extended Playtime】5200mAh large capacity effectively doubles the usage time for Meta Quest 2; swap multiple packs for non-stop power. 【Fast Charging & Power Delivery】Supports up to 15W charging/discharging, 80% recharge in 2 hours to keep you going longer. 【Smart Indicators & Safety】Equipped with 4 LED power indicators, halo status light, and multiple safety protection systems. Specifications: Working voltage: DC 5V±0.3V 　 Working current: input and output maximum 3A 　 Battery type: Lithium-ion battery 　 Battery capacity: 3.7V/5200mAh, 19.24Wh 　 Rated capacity: 5V/1.5A, 3200mAh 　 0-100% charging time: about 3 hours 　 20-80% charging time: about 2 hours 　 Indicator light: circular light, charging or discharging 　 Power light: current battery power 　 Button: single click: check the battery power, double click: stop output 　 Automatic shutdown: when there is no power output, it will automatically shut down within 40 seconds Safety protection: overcharge protection, over-discharge protection, over current protection, short circuit protection, high and low-temperature protection 　 Working temperature: 0℃-40℃