fantastic detailed review, and great info from you folks. thanks for the inner bits pictures DEL.
this charger (got one for Christmas) is great for charging up to 4 at 750mA in my opinion. 3@1A?
would be SO much better if there were vents on the top side of the charger by the screen.
doing a capacity test with 4x500mA the area around the screen gets pretty warm.
if i were to charge at 4x1A, i would use active cooling, and a beefier 12v supply.
mostly use it for charging my pair of 25Rs for my SST20/S2, and a pair of 30Qs for my XPL-HI/C8
rotating them. my last 30Q gets charged in my Pico mod with a magnetic cable.
i just received 4 sammy 35E protected cells for when my BLF LT1 arrives. they are from 2 different batches.
this is the first time i did a capacity test. all 4 cells were at 3.55v.
charged them to about 4.1v at 750mA, then changed to ‘NOR TEST’ (normal) @ 500mA.
took forever, but here are the results.
batch JM2T
3571mAh
3687mAh
batch JL1T
3602
3649
if i calculate 10% high (reading x 100 ÷ by 110(or ÷ by 1.1) as many report…
3246mAh
3351mAh
3302mAh
3317mAh
that seems more realistic for these cells. i’ve read you can expect around 3350mAh from a 35E.
these are protected, don’t know if that affects capacity or resistance.
what sold me on the C4 charger is the internal resistance reading got praised by a few reviewers.
the IR will go up as cells age. also being able to view voltages instead of percentages!
i usually charge to 4v to prolong the battery’s service life. i may switch to 4.1v
i’m not often testing, or testing a lot of cells, so the slower/higher reading capacity test isn’t an issue for me.
being able to use ‘FAST TEST’ to discharge cells to a storage voltages (3.5v) is nice to have.
trying to sync the settings for all 4 batteries can be frustrating. first stops blinking by the time the 4th is pushed in.
i found just quickly pushing the cells to briefly disconnect them, you can get them all flashing to sync the settings for all 4 cells.
yes, you can use the button for each cell to get them to flash, but if the settings are out of sync it’s like playing wack a mole. lol
cheers
/richard