Is my 1500 possessed?

[wattshapnin]

1998 1500 with 58,000 miles and no issues. Rode it 3 days ago with no problems. Went to start it today and the battery was totally dead. Gave it a jump start and let it run for 30 minutes at 2,500 rpm. Went to move it and it died and battery only showed 5 amps.

Now here is the strange part. I could hear a small motor running, and it's not the motor fan. So, I pulled the battery cables off and the small motor noise continued for about 15 minutes and it then stopped. What could possibly be running without the battery being connected? This is probably the reason my battery died but I don't have a clue what it could be.

Thanks in advance!

John

[AZgl1800]

check the Air Compressor for the rear shock.

if the relay that controls that is welded shut, the battery will be dead in 15 minutes +/-

[Rambozo]

What could possibly be running without the battery being connected?

Nothing, if that is the only battery. Could be heat expansion noises, try to track it down. Or has someone hidden a Stirling engine somewhere on your bike?
Most likely your battery just gave up the ghost. Put in a new one and verify that there is no parasitic drain.

[4given]

The sound of air entering or escaping the fuel tank could be mistaken for a small motor running.

[WingAdmin]

The sound of air entering or escaping the fuel tank could be mistaken for a small motor running.

That's what I was thinking. Open the gas cap when you hear the noise and see if it stops.

[wattshapnin]

Thank you all for your suggestions. I took the battery out and gave it a complete recharge. Looks like 13.5 amps coming in to the battery now that it's running again. I'll keep you posted in the event it happens again.

I still can't figure out what would hold enough of a charge to keep running with the battery disconnected though. Does the starter motor have a capacitor with energy enough to spin the starter motor just enough to keep it spinning without engaging it? It was a very noticeable small motor that eventually got quieter and stopped after about 5 minutes without power.

Thanks again gang.

John

[AZgl1800]

Thank you all for your suggestions. I took the battery out and gave it a complete recharge. Looks like 13.5 amps coming in to the battery now that it's running again. I'll keep you posted in the event it happens again.

I still can't figure out what would hold enough of a charge to keep running with the battery disconnected though. Does the starter motor have a capacitor with energy enough to spin the starter motor just enough to keep it spinning without engaging it? It was a very noticeable small motor that eventually got quieter and stopped after about 5 minutes without power.

Thanks again gang.

John

I think you mean 13.5 VOLTS going to the battery