I am experimenting with building my own EV charger and range extender. I am hoping someone on here can help me. I am thinking of using a few 5kw hr refurbished Tesla battery packs = 90 x 4.1 volts charged lithium ion in series something like 369 volts full pack.
And what is the nominal voltage of the i3 60 AH battery. what constant charging voltage does it take to recharge the battery ?
And then creating my own battery charger for the 5kw hour brick , maybe to match the BMW i3 pack will need to take a few 4.1v lithium cells out and then though what voltage is the nominal and charge voltage that I would need for my homemade charger to match the onboard EV pack?
thanks Im probably leaving out something want to build my homemade range extender to tie into BMW i3 HV DC power cables and flip a switch while driving to charge and drive with my added lithium ion packs.
thanks in advance