I use my Lipo battery charger, hooked up to 2 magnets

I've got ~20 18650 cells, but use them mainly in my flashlights.

Bump.

I seem to have a weird issue with my Xiaomi 10,400 mAH powerbank.

It takes quite a long time to charge full, and when it does i leave it idle.

After a few hours, still can charge, despite it being full from earlier.

Plugged in an inline reader, found that quite a lot of mAH is going in..

idk man.

if that's the case, i'll gladly open mine up and get some new 90000 mah 18650

Was pulling ur leg la

Just did a full discharge test on the powerbank. At a 2A discharge rate, the Xiaomi could only provide about 4,500 mAh, which goes to say that it is in fact, royally fucked.

Yes, I know discharging at 2A will have a lower capacity than discharging at 1A (or 500 mA), the discrepancy is too big..

Review from goughlui.com

Load (mA)	Run	Capacity (mAh)
2000	1	8710.609887
2000	2	8726.19427
2000	3	8720.846757
2000	4	8620.342065
2000	5	8696.767613
Mean		8694.952118

Basically half the capacity is gone.