Join Date: Sep 2008
Location: Victoria BC Canada
Won't Start without a boost
for the last 4 days. 07 Wee, 12BS battery only 4 months old. 12.6/7ish volts while connected to the bike. Turn the key and voltage quickly drops to 9.6 which is not enough to start the bike and barely enough to make the starter move.
Voltage will go down as low as 9.2 after a few more seconds.
Bike is ridden daily, the last 4 days I have been connecting it to a 1 Amp trickle charger overnight. Starts right up in the morning but won't a couple hrs later. Thus the requirement for a boost.
I have a .8-.9 Amp current loss testing from - post to - terminal. Book says should be under 3.
I have heated grips connected to the extra receptacle behind the rad and a 12V plug hot wired from the battery for a GPS. This shouldn't be enough to be a problem.
I checked most of the electrical but haven't yet checked voltage at 5000rpm to see what the charging voltage is.
It seem to me like the battery just doesn't have enough capacitance to keep the voltage up while trying to start. Bad battery or weak charging system???
Any ideas, thoughts....
2007 DL650 Gray