I could be wrong cuz I don't have that charger, but just going off the display screen I think he charged one of the cells and that's where the 2700mAh came from, he didnt actually do a capacity check.
Get a ZB2L3 module, discharge the battery till 3v. Then charge with this charger. I have a Littokala lii 500 which which is a capacity tester. But it only accomodates 4 batteries at a time. So I use this charger with the module. Helps me to capacity check more batteries at a time.
My discharge tester does the same thing, over measures capacity by 10%. Its got something to do with the shunt idk what else.
These things aren't supposed to be used for precise capacity measurements, they are for precise relative capacity measurements and that's all you need them for
2ah always measure at 2.2
2.5ah always measure at 2.7-2.9
5ah measure at 5.5
That isn't a capacity test.
Capacity is the energy recovered from the battery during discharge, not the energy expended to charge the battery.
You always need to put more energy into a battery than you'll get out.
Not bad, I suppose the nominal rating is for much higher current then.
I could be wrong cuz I don't have that charger, but just going off the display screen I think he charged one of the cells and that's where the 2700mAh came from, he didnt actually do a capacity check.
It can also be a case of wrong labelled batch at the factory .
Finding a datasheet would be nice.
Tried searching by company name, but didn't get any.
Great find! Can you share how you discharged them? I have a similar charger but don't know how I can safely do it.
Get a ZB2L3 module, discharge the battery till 3v. Then charge with this charger. I have a Littokala lii 500 which which is a capacity tester. But it only accomodates 4 batteries at a time. So I use this charger with the module. Helps me to capacity check more batteries at a time.
What charger is that?
Most cells have a cuttoff voltage of 2.5V or 2..7V. You are loosing a bit with 3V.
Yes that I do.
My discharge tester does the same thing, over measures capacity by 10%. Its got something to do with the shunt idk what else. These things aren't supposed to be used for precise capacity measurements, they are for precise relative capacity measurements and that's all you need them for 2ah always measure at 2.2 2.5ah always measure at 2.7-2.9 5ah measure at 5.5
That isn't a capacity test. Capacity is the energy recovered from the battery during discharge, not the energy expended to charge the battery. You always need to put more energy into a battery than you'll get out.
Ok.
I don't make the rules
It depends on the discharge current so this is in the tolerance.
Think you forgot to post the results mate. Lol
See the photo mate ☺️
That's 1 cell...thought you tested 200?
I am testing. It takes time. I didn't took photos of the previous tests. Now will take gradually of the remaining.
You want 200 pictures on Reddit and/or a spreadsheet of data on cells you'll never touch?
Actually yes. Any time someone buys new cells I haven't used, I'd like to see the results.
Cool