Hello, I have a skyrc rs16 charger and I am not happy with it: inaccurate voltage measurement, no option to check the capacity of a particular cell, and no internal resistance measurement. What charger do you recommend for about PLN 150-200? I have about 350 li-ion 18650 cells to check, I would like to check 6 cells at a time, I mainly mean the capacity test during discharge with 1A-2A current and the result of the capacity for each cell (it would be nice if it would display graphs on a pc).
I am building a package with 100 cells and tested them all, and for this purpose I bought the recommended liitokale li500. But she discharges with a current of 0.5A and only four cells.
And you could check how many Volt is physically charging with the meter because I found that at 4.2v the charger was charging to 4.0v. The results are given when discharging or loading, and for a particular cell
The charger has two capacity measurement modes. Fast - discharges and measures capacity by loading. Normal-Charges measures capacity while discharging and recharges again. The charging current adjusts itself. Max is 1A, and the discharge current is automatically set to about half the charging current as I remember correctly. It is true that I did not measure the final charging voltage, but I measured the voltage on the cells one week after charging and some of them had 4.19V, so they had to be 4.20V. But it may depend on the section, charger and meter.
I just have a similar problem. I tested the battery with the Opus / Zeepin BT-C3100 charger, which has a discharge measurement according to 1A instructions. Now I use this: https://www.aliexpress.com/item/ATORCH-150W-C...er-meter-12V24V48V-Lead-acid/32821877897.html It can in theory up to 150 / 180W. I test at 2A, some at 3A (polaptop) if they are still paired. It has one drawback, namely, as the voltage drops below a given value, it disables the battery. Well, but on Aku the voltage will increase in a moment, so the discharge charger takes the current again because the voltage has increased. The buzzer is turned on, but if you don't disconnect it right away, and other times right away, the measurements are not the same.
Generally a nice device, but for the 18650 I ordered the ZB2L3 tester on the Ali. 3A of discharge is enough. I also have the Lii-500, generally nice, but the discharge is 0.5A, which is not enough, because it later turns out that when you discharge 2A, the capacity is half as much on some batteries. In some, the loss is 10-15% and in others it is half or even 75%.
I test this 150W discharger with the end of discharge setting to 2.9V, I know you can in theory up to 2.8, but I have different batteries, I don't want to look for a datasheet for everybody, it's about selecting those that will give 2A for a longer period.
