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Advice needed for dead duck 1200GSW


John Ranalletta

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John Ranalletta

Went to ride this morning and the bike is electrically dead. Probably my fault for leaving fob in tank bag for two weeks which I assume will drain the battery. If that makes sense, let me know.

 

Voltage at the charger pigtail is ca. 4.86v.

 

I connected the battery tender. The red light glows steadily for a few minutes, then the green flashes indicating charge level 80% plus....no way.

 

Any advice you can offer appreciated.

 

TIA

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John, not sure the nature of your problem, but liquid cooled GS has a different forum. Maybe a mod can move this.

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Lone_RT_rider

John,

 

If memory serves me right, 4.86 volts is no where near the minimum that the Battery tender needs to see before it can initiate a charge cycle. The number of 9.8 volts comes to mind, but that may not be correct. I think you are going to have to get a true batter charger with a 2 amp straight charge to get that thing up to at least 10 volts before the tender can take over.

 

Just going from memory here.....

 

Shawn

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Dennis Andress

Early Volkswagen's with keyless entry drain their battery if they are not locked and the key out of range.

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John Ranalletta

It lives. The battery tender did the trick. Got home about 11p last night & voltage was ca. 13.2 but didn't try to start it. Started up ok this AM.

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What year bike,original battery?

 

Try not to let it discharge again,that will lead to early battery death.

Many modern AGM batteries seem to go south at 3 plus yrs.,if you are close to that,maybe consider a replacement.

 

I got just at 3 yrs battery life out of the stock short battery on my 14 GSA.

Replaced it with a full size Deka from East Penn battery here in USA.

 

JR356

 

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