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Ducati Monster Forum

Moto Board => Tech => Topic started by: lwszabo on July 06, 2009, 02:38:22 PM

Title: battery charging...should I hear it?
Post by: lwszabo on July 06, 2009, 02:38:22 PM
I just hooked up my battery tender and the light is red, I have never noticed it before, but i can hear the battery charging if I listen close...is this normal?
Title: Re: battery charging...should I hear it?
Post by: Slide Panda on July 06, 2009, 03:13:41 PM
You hearing that battery or the charger?  The charger will emit a hum
Title: Re: battery charging...should I hear it?
Post by: lwszabo on July 06, 2009, 03:37:56 PM
like aboiling noise from the battery.
Title: Re: battery charging...should I hear it?
Post by: Slide Panda on July 06, 2009, 04:23:58 PM
Lead acid batteries emit small amount of hydrogen and oxygen as part of the charging process.  You probably hear it bubbling up from the plates - might sound a bit like a half flat soda.
Title: Re: battery charging...should I hear it?
Post by: Howie on July 06, 2009, 09:19:38 PM
Just to be sure, put a volt meter across the battery.  If your battery charger is a low rate charger and you are seeing more than 15 volts, either your battery is faulty or your charger is over charging.  If you are using a high rate charger, reduce the rate to 2 amps or less and less than 15 volts.  No volt meter?  Feel the battery.  It should be warm, but not hot.
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