[Successful test] 3.7V boost 5V power bank circuit based on IP5306

Referenced from https://oshwhub.com/Qmery/IP5307shuang-lu-2.1Achong-dian-3 and IP5306 Datasheet (see attachment)

1. 2.4A synchronous boost conversion, 2.1A synchronous switch charging
2. Boost efficiency up to 92%
3. Charging efficiency up to 91%
4. Built-in power path management, supports charging and discharging at the same time
5. Adaptive charging current adjustment, adaptive adapter
6. Support 4.20/4.30/4.35/4.40V battery
7. Support 4 LED power display
8. Button to power on
9. Built-in lighting driver
10. Automatically detect phone insertion and removal
11. Intelligently identifies the load and automatically enters standby
12. Standby power consumption is less than 100 µA
13. Built-in power MOS, single inductor realizes charging and discharging
14. Output overcurrent, overvoltage, short circuit protection
15. Input overvoltage, overcharge, overdischarge, overcurrent discharge protection
16. Machine over-temperature protection
17. ESD 4KV, instantaneous withstand voltage 12V (the above information is copied from Datasheet)

That battery has been discharged...