>Hi folks, >My Quick Charge Select-A-Charge charger is getting old as are my lead acid >batteries in my S-10 http://www.evalbum.com/3739. I've been using them for >about 2 years and have about 450 cycles on them.
>For the past several weeds the charger never seems to get up to the target >voltage. The display seems to get stuck at about 55-60% (varies a little >from one day to the next) and then it just times out after about 11 hours. >Using my DVM it looks like it's hitting about 135V or so which is quite low >for my 120V pack. Clearly I'm undercharging my batteries. I sort of knew >this would happen as I bought the charger used and it's only rated for >batteries up to 150 AH and mine are 170 AH Trojan T-875s. It also only >puts out 10 amps at 110V so I may have been undercharging since day 1. Hi Peter, i am no expert on the subject, but when I recently purchased my 85 VW Cabriolet conversion, it came with an old Lester Electronics off board charger that has both 110vac and 220vac input. The Lester charger is a 120v charger which matches the 120v Flooded Lead Acid traction pack in my VW Cabriolet (20 New - US Battery US-125 xc2 6v batteries rated at 242ah). My Lester also only outputs 10 amps at 110vac and jumps to approximately 24 amps initial output at 220vac. The Lester manual specifically states to use the 110vac input only for emergency charging, and that continued charging at 110vac would result in under charging of the battery pack. Therefore I believe you may indeed have been undercharging since day 1. US Battery recommends initial bulk charge at 10% of rated amp hours, or in my case approximately 24.2 amps which is what I get with the 220vac input. I would expect the trojan battery algorythm to be similar. My DVM typically reads between 157v and 159v just prior to the Lester Charger shutting itself off. I cant answer your question on how to wire your new Elcon to accept 220vac input, but you may want to consider upgrading to the 220vac sooner than later..... especially if you end up purchasing new batteries. Goodluck, Scott -- View this message in context: http://electric-vehicle-discussion-list.413529.n4.nabble.com/using-dual-voltage-charger-tp4664138p4664169.html Sent from the Electric Vehicle Discussion List mailing list archive at Nabble.com. _______________________________________________ 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)
