murrayzack Posted May 29, 2015 Share Posted May 29, 2015 Say I left the key in my bike overnight in the on position and my battery was completely and totally dead. Could I then give my bike a charge with my car or would I have to charge it with a certain battery charger/tender? Link to comment Share on other sites More sharing options...
Premium Member GAZ Posted May 29, 2015 Premium Member Share Posted May 29, 2015 Are you talking about jumping your bike with your car? Sure you can do it. I did it to mine last year. Depending on which tender you have it will take a while to recharge using that. If you can wait a few days the tender will recharge it, but if you can't jump it and go on a ride for a little for it to charge itself back up. Link to comment Share on other sites More sharing options...
Premium Member rmdet Posted May 29, 2015 Premium Member Share Posted May 29, 2015 Here is a thread on that same question... there is another out there as well, but I found this one first. Link to comment Share on other sites More sharing options...
Guest Ralph Posted May 30, 2015 Share Posted May 30, 2015 It would be better for the battery to stick it on a battery tender for a day or two as a car will have a output way beyond what the battery was designed to take. Link to comment Share on other sites More sharing options...
murrayzack Posted June 1, 2015 Author Share Posted June 1, 2015 I ended up jumping with my car, rode for about two hours and all seems good. Hope I did no damage to the bikes battery! Link to comment Share on other sites More sharing options...
bmwpowere36m3 Posted June 1, 2015 Share Posted June 1, 2015 I ended up jumping with my car, rode for about two hours and all seems good. Hope I did no damage to the bikes battery! Letting the battery fully discharge and/or drop below ~12.4 VDC (lead-acid) leads to sulfation... sometimes its reversible, sometimes not. It'll definitely kill the battery in the long-term (not 1 discharge, its cumulative). So best to avoid draining the battery and defiantly using a battery maintainer when the bike is not ridden for long periods of time. Link to comment Share on other sites More sharing options...
magsz18 Posted June 2, 2015 Share Posted June 2, 2015 Can you define a long period of time? Link to comment Share on other sites More sharing options...
Guest Ralph Posted June 2, 2015 Share Posted June 2, 2015 If you do it to a new battery say a year old you will likely get away with it do it to a 4 year old battery and you will likely kill it, leave any battery like that for a month or two and it will at best never be the same again, problem with the MT battery is it's a bit on the small side so needs to be on top form to start the beast. Link to comment Share on other sites More sharing options...
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