- Note: Before shipping we check every power bank. Please be informed that Pineng company (Zhongshan Pineng Battery Co. Ltd) never issue any warranty card or require online register. Pineng official website (en.pineng.cn). Specification PN969 - 20000mAh 1. Input: DC 5V 2A 2. Output: DC5V 2.1A/1A 3. Built-in battery capacity: 3.7V/20000mAh 74wh 4. Battery Type: Li-polymer battery 5. Fully Charge: 8-14 hours 6. Working Temperature£º -10¡ãC to 45¡ãC 7. Standby times: >5000h 8. Cycle life of charging: 500 times (1 time = from 0% to 100%) 9. Net Weight: 420g 10. Size: 163*76*21mm