I have made a solar panel charger, it consists of a 1.2 watt panel connected to a buck converter, then to the phone.
Now, when I connect it, it charges the phone and in the battery settings it shows it is charging as "plugged ac" and slow charging.
I wanted to test if it can slow down the discharge rate, so I came up with a test procedure where I:
- Downloaded "battery drainer" app (which essentially turns on cpu stress, gps, vibrator, full brightness etc);
- Measure the time it take for the phone to get to 90% from 100% with solar panel attached and without solar panel attached.
But the time it takes to discharge is almost the same. I am wondering what am I missing. Wouldn't the solar charging increase the discharge time?
When I measured the solar panel output it was 5 V and around 110 mA.
Thank you, any help will be appreciated.