Lee, you may be close to a low cost solution. I need to look at the design and a modification. Thanks, Bob.
________________________________ From: EV <[email protected]> on behalf of Lee Hart via EV <[email protected]> Sent: Thursday, August 16, 2018 10:03 AM To: Electric Vehicle Discussion List Cc: Lee Hart Subject: Re: [EVDL] Testing batteries ROBERT via EV wrote: > If someone wanted to test 300 - 400 NICAD or NIMH cells for capacity, how can > it be done efficiently? I do not want to take 6 months charging and > discharging one cell at a time. The purpose of the testing is to match cells > so as to build a large battery. Any tester I can buy to speed up the process? I use my Battery Balancer for this <http://sunrise-ev.com/balancer.htm>. You can program it to test up to 80 cells or batteries sequentially. It can measure voltage and current, and control a charger and load bank. For example, have the program: - charge each cell to a defined "full" voltage and current - then load it with a defined load - measure the time to a defined "empty" voltage - record the amphours - recharge the cell back to "full" - step to the next cell or battery I'm using one now to test a set of CALB cells. I only bothered to connect one relay board, so it tests a group of 8 cells. Then I offload the data, and re-connect it to the next batch of 8 cells. The Balancer ins't really a commercial "turn-key" product: It's just something I built because I couldn't find anything affordable that did what I want. But I do have bare and assembled boards, and sell them on a one-off basis as needed. -- "Verschlimmbessern" (German, verb) - To make something worse by trying to improve it. (English translation: "Microsoft"?) -- Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com<http://www.sunrise-ev.com> _______________________________________________ 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/20180817/8ceefde5/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)
