Question about battery tester

Information and questions on GL1200 Goldwings (1984-1987)
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Joined: Fri Apr 08, 2016 2:53 am
Location: Headland,Alabama
Motorcycle: 1986 Honda Goldwing Aspencade

Question about battery tester

Post by walker70 »

Hi,have a cheapo pittsburgh tester and would like to know this,hooked it up as per instructions,curious about this,when hooked up with key on and no engine running it tests the battery as good but with engine running I have to crank up the rpms to get the alternator light to read,is this normal.


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Location: New Zealand
Motorcycle: 1986 GL1200 Aspencade

Re: Question about battery tester

Post by oldishwinger »

not familiar with your tester, but if its showing around 14 to 14.5 volts at 3000 rpm, and the battery is good you are good to go. voltage fluctuates normally from idle upwards but shouldn't exceed the 14.5 volts

hope that helps a bit

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Location: Lake Oologah Indian Territory USA
Motorcycle: '02 GL1800
2009 Piaggio MP3 250cc

Re: Question about battery tester

Post by AZgl1800 »

In colder ambient temps, the voltage should reach in the middle 14s, maybe even 15

when it is warm, on a 70* day or warmer, the regulator should pull it back to around 13.6

just as a comment, I have a Digital cigarette lighter voltage monitor.
I like it, always right where you can see it while driving.

on a 30* day, I started up my 2001 Chevy Suburban and went to town.
that thing went above 15.0 for a while.

about a mile later, it was around 14.77 and stayed there for over ten miles.

Coming home, after many stops at some stores in town, and idling thru the parking lots,
it came down to about 13.9 to 14.0

'02 GL1800
2009 Piaggio MP3 250cc

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