Battery

[Russ from MN]

Recently my son shut his motorcycle off with the kill switch and then forgot to turn the key off, hence a dead battery. This was a few days ago and he has done nothing about it. I told him that leaving a battery discharged will ruin them, what is the opinion of the experts? Somewhere I was led to believe that a battery should never be left sit in a discharged state. Thanks in advance!

 

[sotxbill]

Yes,deep discharges are bad, and leaving it discharge for more than a couple of hours is worst. Deep discharge batteries must be recharged with in 24 hours to prevent damage.. Motorcycle batteries will pretty much croak on the first discharge. Agm motorcycle cell work much better in my experience at least with my 5bikes..

 

[noncompos]

Batteries are sometimes like people: look alike but perform differently...
Sox is correct: running a battery down and leaving it usually ruins it, but not always. Charge it up and see what it does-all you"ll lose is a little juice. Good luck.

 

[old]

Yep not good to run one down to zero but it is also not good once down that low to charge them up fast. Use a slow charge on it. Oh if that bike has points he may find he has a problem with them being bad or if it has a electronic ignition he could find it burned out

 

[Walt Davies]

Leave him alone when the battery is dead/dead he will learn a good lesson.
Walt