Hi Mark, Were the batteries designed to be put in series? Or more accurately the bms?
Quite likely the fets on the bms board weren't rated to a high enough voltage to be used in a 24v system. Sent from BlueMail On 20 Sep. 2018, 04:58, at 04:58, Mark Hanson via EV <[email protected]> wrote: >Hi Folks >I bought 2 12v 10ah lithium battery replacements for my 7.2ah lead >batteries in my electric mower. Last night one let the magic smoke out >after a season of mowing and found a bad series transistor at fault. >Taking it apart revealed 4s3p cilyndrical cells 2650 size. They tested >good but the circuit fried. >Best regards >Mark > >Sent from my iPhone >_______________________________________________ >UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub >http://lists.evdl.org/listinfo.cgi/ev-evdl.org >Please discuss EV drag racing at NEDRA >(http://groups.yahoo.com/group/NEDRA) -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20180920/20f5ca42/attachment.html> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
