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.
Cheers Dan On Sat, Apr 19, 2014 at 6:31 PM, Dennis Miles <[email protected]> wrote: > your reference is from steve at Green Shed Conversions. The process is > called "Dump Charging" and if the voltage is about the same it is very > simple (Akin to " jump-starting" a gas car...) > > *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 5:12 PM, Dan Baker <[email protected]> wrote: > > > Hello fellow Evlist users, > > I have question around charging the battery pack on an EV from a larger > > pack of batteries, same voltage. I'm looking to build a stationary solar > > array (48v) and charging 12 x 12 volt 133 amp/hr sealed lead acid > > batteries, 4 batteries per bank These are retired but gently used UPS > > batteries and I will have about 1200 watts in solar going into a > > Morningstar 45 amp solar controller. I would like to be able to charge > my > > EV boat pack (http://www.evalbum.com/4767) from this pack, UPS batteries > > again, but 4 x 12 volt AGM 133 amp/hr. > > My questions for the list: how do I transfer the charge from the solar > > bank to the EV pack? Can I just use a charge cable directly and the two > > banks will equalize? Or would I need to use a charge controller? I > have > > another 45 amp solar controller I could hook from the main battery pack > to > > the EV pack but I fear the input amps would exceed it? I remember a > while > > back someone mentioned they were charging a lawnmower from a truck pack, > > wish I could find more info on this. > > > > Thanks in advance for your help and thanks for all the great contributors > > on the list, fantastic learning and information! > > Dan > > -------------- next part -------------- > > An HTML attachment was scrubbed... > > URL: < > > > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140419/9a609d6a/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) > > > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140419/29bdfcb4/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) > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20140419/85e02317/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)
