90K100LT. A new (2nd one) sealed battery (Wesco) drains down to below cranking power within 3 weeks. New, hot (14.2V) battery installed 3 weeks ago, and today was too low to crank engine. This is the 2nd time this has happened. First one caused me to fry the starter relay; costing me another $65.00.
Where & how should I look to find the problem???
Originally Posted by gadwal
Do you have a voltmeter with an amperage function? If so, put the ammeter between the disconnected ground cable and the battery. Do NOT turn the ignition on or try to start the bike or you will fry the meter. You should see somewhere around 2.1ma or less on the meter with the key in the OFF or locked position.
Let us know what you find.
Last edited by bmwmick; 01-16-2008 at 02:55 AM.
21 ma drain will drain 10,584 ma or 10.54 amps in a 3 week span. This is not a problem on a car battery, but with a 18 or 20 amp hour battery, half is gone. A car battery 10% or less.
Originally Posted by bmwmick
That's why so many motorcyclist use a battery tender.