Hi Guys, I have an 8 year old LiFePO4 pack in my car and wonder if anyone knows what the end of life failure mode is for these?
Over the pandemic lock down I was not driving the car for 3 months and noticed one day that all the cells were flat, ~2V. I attributed this to some parasitic loads over the 3mo, and charged it back up. Then, with a full charge I drove ~10 miles (about 25% of my 'old' range) and parked, and after a couple weeks noticed I was back ~2V per cell. I put it on charge and it seems to have charged up and is holding voltage now. Is this how LiFePO4 batteries toss in the towel or do I still have a parasitic load to debug? What is the failure mode? Thanks for any tips. Chris http://www.evalbum.com/4743 _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
