Hello Steve, Did you know that you can purchase chargers that have multiple leads coming out of it for charging many batteries, but each cell separately. Back in the 50's, I was working in a military battery shop which was normally use to charge aircraft nicad batteries and 6, 12, 24 and 36 volt lead batteries.
The charger unit was in a separate room and all the wires were run in conduits to a roll of arc proof receptacles in the battery room. Plugging into the 1st and 2nd receptacle for one 1.5 V cell, 2nd and 3rd for another and etc. For the lead batteries we plug into the 1st and 3rd receptacle for one cell and 3rd and 5th receptacle for charging each 2 volt cell separately. This was easy to do, because the cell connections were expose on the outside of the batteries. You still can purchase these types of batteries in the 300 AH range today. My first set of batteries was in 1976 in my EV had these type of expose cell links in a 300 AH battery. The battery look like the Exide Tudor Types that you still can see on line today which are the 2 volt cells. I could easily balance this battery pack regulated charge at 10% of the AH rating of the battery pack or at 30 amps. This batteries lasted me just over 10 years. The next battery pack which was 30 each Exide X Something, lasted about 8 years, charging at 30 amperes. The last pack was the Trojans T-145's charging at 40 amps that lasted 8.8 years. The pack I have now is the US Battery 250 AH 6 volt that I install on Sept 4, 2009, charge at 25 ampere to 225 volts at a battery temperature of 80F. Today they have 2645 cycles for 3504 miles. They took about 600 cycles before they reach there maximum capacity peak. The reason these batteries lasted this long, is that most of my trips are short not discharging below 90% SOC using a higher AH battery. Roland ----- Original Message ----- From: Steve Powers<mailto:[email protected]> To: [email protected]<mailto:[email protected]> Sent: Wednesday, October 23, 2013 4:24 AM Subject: Re: [EVDL] Charge profile on Zivan NG3 for 108V US Battery 125's This is a big disappointment that the charger is this way. The batteries at physically 3 years old, but not used that much. They have about 3000 miles on them which is probably 150-200 cycles. They have been badly abused for those cycles, but still work OK. I am going to have to do something different. My options are: 1) 96V Delta-Q + one individual 10Amp 12V smart charger 2) Russco 18-20 with some control circuit that I have to develop (my original plan) 3) 9 individual 12V chargers - very messy to wire up considering where the batteries are in the car 4) My Zivan K2 which does have exposed adjustment pots, bit U haven't been able to get it adjusted. Maybe because I was turning the pots when it was off and it needs to be adjusted under power. I have the chargers and equipment for all the above (I have a lot of spare EV parts in my garage), but maybe don't want to spend the time or mess the nice looking car up by running 9 individual chargers. I also considered getting 3 36V Delta-Q, but I don't have enough power for that and even used it would run me about $700-$800 on e-bay for the three. At least Delta-Q has different algorithms that are user selectable. Steve -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/Charge-profile-on-Zivan-NG3-for-108V-US-Battery-125-s-tp4665883p4665898.html<http://electric-vehicle-discussion-list.413529.n4.nabble.com/Charge-profile-on-Zivan-NG3-for-108V-US-Battery-125-s-tp4665883p4665898.html> Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ 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/20131023/79009ebb/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)
