Key on for 2 weeks

[2WHEELSFORME]

05 Venture, high miles, OK so got in from a trip and used my other bike for while and yesterday discovered I had left the key on. Of course the just under two year old Oddesy is drained. Tried a boost and a slow charge and nothing, no light at the dash and no cranky. I suspect the battery is dead and will not accept a charge and I will replace ASAP. Just wonderings if other damage might be done. Thoughts?

[bongobobny]

Find it hard to believe that just because you drained the battery that you killed it, ESPECIALLY an Odessey, those are designed to last a VERY long time under extreme conditions! My 9 year old Odessey in my 1st gen is still good even though it just sets in the bike and the bike has set in the garage since '09!

 

You need to charge the battery at a fairly low rate for many hours, like at 2 to 5 amps for about 8 hrs. Did you check the voltage before and after charging with a voltmeter?? The reason I ask is maybe, just maybe the switch contacts for your ignition switch have gone bad. Ignition switches on 2nd gens is a weak point, and when they go, the bike is seemingly dead, no dash, no nothing, EXCEPT the radio which works on the ACC position which is a separate set of contacts.

 

If you put a set of jumper cables on the battery from your car/truck does the dash light up?? Once again you need to read with a voltmeter what exactly is going on...

[Guest Jamsie]

I drained my batter a couple of weeks ago , by inadvertently switching the key to park. It took 16 hours to fully charge the battery, but its fine and keeps it`s charge

[2WHEELSFORME]

Thanks for both replies. All is well now and it is charging, I got dash lights and the starter turns. The problem was it was so dead it would not take a boost so now on slow charge and will give it 24 plus hours and I think all will be well. Also helped that I ordered a new $90 battery off Amazon. Now I will just store it without acid and have a spare. My VTX uses the same battery so I'm sure it will not go to waste. Again thanks Bongoboby and Jamsie.

[Condor]

Thanks for both replies. All is well now and it is charging, I got dash lights and the starter turns. The problem was it was so dead it would not take a boost so now on slow charge and will give it 24 plus hours and I think all will be well. Also helped that I ordered a new $90 battery off Amazon. Now I will just store it without acid and have a spare. My VTX uses the same battery so I'm sure it will not go to waste. Again thanks Bongoboby and Jamsie.

 

 

I thought the previous advice was spot on. I ran my '99RSV for three days, a few years ago, on a DEKA agm battery only, and remember this included the headlight burning and sucking amps. It finally died with a 8.9vdc reading. Got to the motel and put a smart charger set on 2 amps on it, and by the next day it was showing full. Turned out to be the rectifyer was bad...., and it's still in the bike....

[kevin-vic-b.c.]

I did same thing with my Venture, left key on for days. I took the battery out of the bike and put it on a slow charge ( 1 amp not 10) for about 24 hrs and has been fine starting ever since.

The only other issue was that it the headlight burnt out the next time I rode the bike. I am sure the two events were related.

[Heartbeat]

Just some food for thought...

 

I have had a battery drain to totally dead (0 volts) on a car. And when I put a newer style electronic charger on it, it wouldn't charge at all. I even tried another newer charger that would automatically change the amperage and "recondition" the battery, but it still wouldn't work. Then I put an old battery charger (without any electronics) on it and it came back to life. I left it on a few hours and then switched back to the newer charger so that it would automatically shut off when charged. That battery is still holding up over a year later.

[Flyinfool]

:sign yeah that:

 

Many "modern" chargers will not even try to charge a dead battery. You need to keep that good old cheap stupid charger around for the days when you drain a battery all the way down.

 

OR

 

You can connect jumpers from the dead battery to a good battery and then put the new charger on both batteries till the dead one is brought up enough for the smart charger to recognize it. This will fool most of the smart chargers.