Charging System

JoshuaTree · 01-08-2009, 07:33 PM

1) First, remove the battery, fully charge it (trickle charger, overnight - also fill up any cells that are low with distilled water beforehand [assuming its not a sealed battery]), and then take the battery in to be tested to see if its good or bad.

A bad/marginal battery cell can 'appear' to be a charing system issue.

If the battery tests OK, then you need the shop manual for the bike. You'll test the output of the stator/rotor assembly, This critter puts out alternating current (AC). You'll measure the voltage between all of the sets of wires - usually three (the manual will have the value to test for). If that tests fine, you can either just try a new regulator or simply take the old one in to a shop to be tested.

"Normal" charing system output is 1-2VDC above the "resting", fully charged battery voltage for your bike.

YMMV... :shurg:

01-08-2009, 07:33 PM	#2
JoshuaTree DILLIGAF? Join Date: Nov 2008 Location: Austin, Texas, USA, Earth, Sol, Western Spiral Arm, Milky Way Moto: 1993 K75SA Posts: 483	1) First, remove the battery, fully charge it (trickle charger, overnight - also fill up any cells that are low with distilled water beforehand [assuming its not a sealed battery]), and then take the battery in to be tested to see if its good or bad. A bad/marginal battery cell can 'appear' to be a charing system issue. If the battery tests OK, then you need the shop manual for the bike. You'll test the output of the stator/rotor assembly, This critter puts out alternating current (AC). You'll measure the voltage between all of the sets of wires - usually three (the manual will have the value to test for). If that tests fine, you can either just try a new regulator or simply take the old one in to a shop to be tested. "Normal" charing system output is 1-2VDC above the "resting", fully charged battery voltage for your bike. YMMV... :shurg: __________________ "Quis custodiet ipsos custodes?" "Learn to do the counter-intuitive things that may one day save your ass..." "... Love Much, Laugh Often..." - Amanda Kay Corso (January 18, 1980 - April 15, 2008)