This is a personal test for 5 different power banks that I buy:
- ROMOSS Sense 9 25000mA;
- TP-LINK TL-PB15600 15600mA;
- EC Technology PB-EC001 16000mA;
- MediaRange MR751 5200mA;
- No brand 2200mA.
This test here all done with:
- To meter the consumption I use a power meter KCX-017;
- For charging Charger 5V, 3A;
- For discharging I use a tablet Chuwi Hi10Pro (Android and Windows 10 tablet) that charges with a USB charging (playing YouTube HD/Full HD videos to drain the battery).
I’ve tested 5 different power banks, 4 of them Chinese (ROMOSS Sense 9, TP-LINK TL-PB15600, EC Technology PB-EC001, and a simple powerbank with a 18650 battery) and one german (MediaRange MR751). All were tested with the same KCX-017 USB meter and add the amount of 20 mA per hour of consumption in my measures.
When I was charging I use the KCX-017 to measure the Voltage and the current of the circuit with the same AC/DC power adapter that can give 5V 3A.
I’ve measured the time and the TOP power provided when I’ve charge the power banks and here is the results:
Capacity versus Reality (mA)
In this table I add 20mAh for the meter.
Output top power
Power = Max(V*A)
Charging time
Charging with a 5V, 3A (max) USB power adapter.
Power = Max(V*A)
Final results and opinion:
The most efficient was the one with the highest capacity with almost 66% of efficiency (ROMOSS Sense 9). Meanwhile, the one who charges faster the equipment that it is plugged and charges faster it (capacity vs time) is the TP-LINK TL-PB15600 who makes the winner of these tests.
