kosPap
Flashlight Enthusiast
hi all!
I would like to help me verify my efficiency estimation of powerbank charging one's phone.
I made a series of tests using my phone, several powerbanks, and two USB meters.
By and large charging efficiency I foudn it to be 50%!
Data:
Results
What do you think?
I would like to help me verify my efficiency estimation of powerbank charging one's phone.
I made a series of tests using my phone, several powerbanks, and two USB meters.
By and large charging efficiency I foudn it to be 50%!
Data:
- Xiaomi 4X phone with Li-Po 4100mAh 3.85/4.4V battery
- KCX-017 and OLED USB meters
- Replaceable 18650 batteries Powerbanks
- NCR18650A & B batteries with capacity measured with the Opus charger
- I assumed a steady 5V USB voltage across the meter, and 3.6V 18650 battery and 3.85V Xiaomi battery voltages for Wattage calculations
Results
What do you think?