——Product parameters——Protection board: comes with independent battery protection chipSize: 53.9mm*30mm or 38*32mm Output interface: USBA+TYPE-C supports fast charge output and input interface: MICRO + TYPE-C supports fast charge inputBattery type: 3.7V battery (aggregate or 18650 lithium battery) in parallel, the capacity is not limited, the larger the capacity, the longer the charging and discharging time. Ego!!! Conversion efficiency: 95% efficiency (different voltage and power efficiency vary)Keys: The key duration is longer than 60ms, but less than 2s, which is a short press action. A short press will turn on the battery indicator and boost output. A long press for 10s can reset the entire system. A key action of less than 30ms will not have any response. Mobile phone insertion automatic detection function: IP5328P automatically detects the mobile phone insertion, immediately wakes up from standby mode, turns on the boost 5V to charge the mobile phone, saves key operations, and supports no key solutions.