So... I ordered a new #battery pack for the #Xiaomi Dreame vacuum cleaner. It has not been an official replacement part, because I didn't find one. The battery worked for three month and then went flat.

Shortly after the vacuum cleaner stopped working and I put it on my #flohmarkt just in case someone would need replacement parts.

For all the rechargeable batteries in our household I had bought a charger that also #charges #LiIon and has options to measure the #capacity of cells.

These are the capacities of the #Samsung INR186050-25R cells I removed from the battery pack of the cleaner (mAh): 2366, 2294, 2262, 2254, 2321, 2267, 2257.

Looking at the #specs for the battery I found that the capacity should be 2500mAh. There's also a curve "20A discharge cycle life of 25R" that shows that a capacity of ~2200mAh is reached around charge cycle no. 150 of 250 cycles being tested. ~2300mAh is a value for around 100 charge cycles.

I'm wondering whether these cells can still be safely used in some other application.