Most reacted threads

I'm working on packaging and BMS solutions for cylindrical cells, of all lithium types. Current product on eBay has 18650 (working on 2170) cell packaging with and without JK active balancing BMS. All packages are bring-your-own cells. System uses high current gold plated Beryllium Copper...

Has anybody seen studies of what the curve of internal cell resistance looks like over the life of a Lithium Ion and Lithium Iron Phosphate (LFP) cell? According to most papers I'm reading, the end of life comes at 80% of initial capacity value, or internal resistance of 200% of initial value...