iRondo
My castle, a boat; The ocean, my moat
I have a 2P4S battery bank built from Sinopoly cells, circa 2018. It's been great but I notice lately that the internal resistances have changed. The spec is .4 mOhm and as of right now, under light load, no charge source, they're reading .15, .53, .24, .62. The pair I'm most concerned about is cell #2 and has been as high as 1.9 mOhm under heavy load.
The voltage delta is always very small, but my concern is how high is too high for the IR?
Also, is replacement of a single pair of cells okay?
TIA
The voltage delta is always very small, but my concern is how high is too high for the IR?
Also, is replacement of a single pair of cells okay?
TIA