BEV battery technologies changing fast
GM's new battery news is exciting Great that they went outside the box in form factor, but the risk as always...will this become a commodity level form factor...AKA Beta vs VHS One of the why's ...
Forum Discussion
time2roll wrote:pnichols wrote:Charge cycle is based on 100% discharge equivalent. So the 400 mile battery goes 400,000 miles before replacement. Most vehicles are long done before that mark.
Note the estimated recharge lifetime of only 1000 cycles.
This is not anywhere near enough - in my opinion. If one was to "top up" their EV battery once a day every day - just to feel good with regards to always leaving home with their EV battery at the 100% charge level (like we do with our smartphones) - then the EV battery would only be good for a little over 3 years (3 X 365 days = 1095 days = 1095 recharge cycles).
A charge cycle life of 3000 or more cycles would be more like it ... to go along with the estimated 800km EV range.
Using 100% cycle is also the worst way to treat a battery. Since few people drive 400 miles every day most users will only run 70-80 percent cycle, charging at home on a regular basis using a moderate charge rate. This could easily stretch battery life past 600,000 miles.
