Did you know that there are NiCd battery chargers that are design to charge all the cells separately in a pack. We use these type of chargers in a aircraft battery shop. The pack was 18 cells connected in series for a 28 to 30 volt output. The battery charger has 19 leads going to the pack with two leads per cell. It balance charge the batteries and detects if there is a bad cell.
With my PFC-50B charger, I adjust the timer, voltage and current differently for the amount of ampere hour used. If I use 10 AH then its one setting, another setting at 25 AH and another at 50 AH and etc. The battery charger never went into recharge, because I set the timer to shut the charger before this happens. Roland ----- Original Message ----- From: Jan Steinman<mailto:[email protected]> To: [email protected]<mailto:[email protected]> Sent: Wednesday, April 02, 2014 11:11 PM Subject: Re: [EVDL] Charger for flooded cell NiCd batteries? Thanks for your reassurance, David and Evan. I'll try charging them in a 24-battery string, and see what happens! > From: "EVDL Administrator" <[email protected]<mailto:[email protected]>> > > On 31 Mar 2014 at 2:54, Jan Steinman wrote: > >> he person I got these batteries from fried individual batteries -- I >> mean internally melted! -- by charging them to spec in a 144V string! > > I've heard of this happening from gross overcharging, but NEVER when they > were "charged to spec" (in accordance with Saft's specifications). > > I don't recommend it, but you can gas these batteries all day at 7 amps with > no significant harm, just like you can trickle charge small (AA-D) NiCd > cells forever with little or no effect on cycle life. > > There were problems with early STM5-100MRs and I think also with STM5- > 140MRs. When used at anything over 2C5 to 2.5C5, the separators would fail, > IIRC, often with catastropic results. However, Saft STM5-180s are strudy > batteries. > > You do not need regulators at the battery or cell level. :::: The problems of energy use are not technical but cultural. Americans want speed, acceleration and big cars. -- Pat Murphy :::: Jan Steinman, EcoReality Co-op :::: _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub<http://www.evdl.org/help/index.html#usub> http://lists.evdl.org/listinfo.cgi/ev-evdl.org<http://lists.evdl.org/listinfo.cgi/ev-evdl.org> For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/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/20140403/48620fae/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)
