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johnny q · 07-21-2010, 10:52 AM

Hi everyone - the battery in my GL450 goes dead in about 2 days if I don't run the bike. At idle, the charging system is putting out 14.2 volts, at 5000 rpm its putting out 13.5 volts. I'm not sure what I should check next, or even if this is ok. Any idea what might be causing the battery to die ?

The_AirHawk · 07-21-2010, 11:34 AM

How old is the Battery? If it's more than a year or two old, it might be going-away. The 13.5v is a little low, but not wholly unheard-of.

Do you keep the bike on a trickle-charger when it's parked?

Kenneth_Moore · 07-21-2010, 11:45 AM

The charging voltage looks fine, about what you'd expect with a healthy system.

It's possible you have a short circuit that is draining your battery.

Or your battery might just be done. No fix for that, just replace it.

07-21-2010, 10:52 AM	#1
johnny q Registered Member Join Date: Jul 2010 Posts: 1	GL450 battery goes dead Hi everyone - the battery in my GL450 goes dead in about 2 days if I don't run the bike. At idle, the charging system is putting out 14.2 volts, at 5000 rpm its putting out 13.5 volts. I'm not sure what I should check next, or even if this is ok. Any idea what might be causing the battery to die ?

07-21-2010, 11:34 AM	#2
The_AirHawk Founding Member Join Date: Jun 2007 Location: Livin' in a Van: down by the Mariana Trench Posts: 10,891	How old is the Battery? If it's more than a year or two old, it might be going-away. The 13.5v is a little low, but not wholly unheard-of. Do you keep the bike on a trickle-charger when it's parked? __________________ *Parfois, on fait pas semblant* Sometimes, it's not pretend Oderint Dum Metuant Let them hate so long as they fear политики предпочитают безоружных крестьян Politicians Prefer Unarmed Peasants Nothing to see here, Citizen. Move along now...

07-21-2010, 11:45 AM	#3
Kenneth_Moore Registered Member Join Date: Jun 2007 Location: VIsiting the GIft Shop in the Pit of DIspair Posts: 7,118	The charging voltage looks fine, about what you'd expect with a healthy system. It's possible you have a short circuit that is draining your battery. Or your battery might just be done. No fix for that, just replace it. __________________ www.kennethmoore.org Last edited by Kenneth_Moore : 07-21-2010 at 11:49 AM.

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