I'm pondering on what cells to get for my PHEV project.
A new UK supplier importing Li-fepo4 cells has appeared with "reasonable" prices. The data sheets for the various cells are here.
http://www.solarvan.co.uk/insight/10AH.doc
http://www.solarvan.co.uk/insight/20AH.doc
http://www.solarvan.co.uk/insight/30AH.doc
http://www.solarvan.co.uk/insight/40AH.doc
http://www.solarvan.co.uk/insight/50AH.doc
Sorry they are in WORD.doc format as I got them.
Charging looks like the issue with these can/will they take 50A charge for short periods?
Should I retain the nimh pack as a buffer and use the Li purely to boost the nimh or should I replace the nimh and go with a replacement li pack, a bit of work to con the BCM but not impossible. I'm happy enough to sort my own BMS for the Li and I have a suitable offboard charger so that's no problem.
I like the look of the 30ah cells x 48 gives reasonable weight, circa 50kg. I don't want to lug around huge weight. If I replace nimh then that cuts down excess to about 30kg over standard. They can push 90A for 15 seconds, so can probably manage 100A for the short periods of full assist.
I could get 50ah TS lcp cells they have better capacity to weight ratio and are very rugged but not state of the art. Choices
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