Replies to some of the comments:
- Fake or wrongly labelled, for me as end user, it’s not much difference, if I paid for X, i should receive X, not Y. Whether Y is another brand or another model of battery.
- I haven’t seen a Panasonic 3400mAh test with such low capacity results, so I dont’ think it’s close enough. Also, I was testing that with 0.5A discharge current, it’s much worse/lower capacity with higher currents.
- The seller was really helpful when buying, so I don’t want to accuse of nothing until I’m sure
- Currently I’m only accusing myself of perhaps incorrect measurements or rig,
Way forward:
I looked at how HKJ does the tests, this it how I plan to do another round of tests:
- ensure good contact with the battery terminals using plenty of stripped copper high gauge wire and a vice to provide connection force
- measure voltage drop occuring on charging terminals & wires to verify if they cause the low max discharge current
- confirm that current measured by the charger is valid by using external multimeters
- test other LiIons on the same testing rig to compare results.
I’ll post again the results, probably in a few days.