When utilizing DUMP Charging, the particular cell chemistry makes a difference, the PbSO4 Lead acid can be charged with a heavy current but, lithium can not. If the packs are at nearly the same voltage the charge current will be reasonable. If you are charging from a much higher voltage pack you must limit the charging current, an ideal unit to do this is a DC motor controller. it will limit the current and maximum charge voltage. Just pretend the battery to be charged is the motor. ( A coil of wire --inductor-- may be needed for the controller to work properly depending upon the controller circuit design. The field winding from a series dc motor might work...)
*Dennis Lee Miles * *Director **E.V.T.I. Inc.* *E-Mail:* *[email protected]* <[email protected]> *Phone #* *(863) 944-9913* Dade City, Florida 33523 USA On Sat, Apr 19, 2014 at 6:42 PM, Willie2 <[email protected]> wrote: > On 04/19/2014 05:32 PM, Dan Baker wrote: > >> Thanks Dennis. I was wondering if that was all I needed, was concerned >> the >> charge difference between the full pack and a discharged EV pack might be >> too great and exceed the charge rate for the AGMs. I guess I could also >> rely on the solar controller to equalize the EV pack when it is plugged in >> and the sun is shining. >> >> I'm sure Steve will weigh in here eventually. Of course you should be > able to charge the two packs (of nominal equal voltage) together in > parallel. I think you will find that, if you want to charge one pack > quickly from another, the suppling pack should be at least somewhat higher > voltage. One or a few extra cells. Seems like Steve used to charge his > mower (36v?) from his tow truck (96-120v?). > > _______________________________________________ > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > http://lists.evdl.org/listinfo.cgi/ev-evdl.org > For EV drag racing discussion, please use 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/20140419/3b8de98e/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
