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DaveW · November 1st, 2021, 06:59 AM

I have a Ninja 300 2014 non abs at only 11000 miles.

I have stupidly thrown money at the problem and ended up with another problem.
I originally had no charge, changed the battery (needed to keep using the bike for work and charging nightly was my only option.)
I tested the diode resistance as per Kawasaki manual and had readings outside of specified ranges. Changed the rectifier (for a used one from ebay) which made no difference.
I replaced the stator (new pattern part). Which resulted in overcharging (18v @ 4000rpm).
Changed rectifier again for another used part and it's now charging at 16v. Battery drops to 12.3v overnight.
Battery dash light stays on as it's over range allowed. (starting to get used that light staying on now).

Have I been unlucky to get two faulty rectifiers or am I missing something?
I'm about to diode test the three rectifiers I now have to rule out triple bad luck, hoping for a magic suggestion from this experienced community.

November 1st, 2021, 06:59 AM	#1
DaveW ninjette.org newbie Name: David Location: Edinburgh Join Date: Nov 2021 Motorcycle(s): Ex300 Posts: 4	Overcharge issue I have a Ninja 300 2014 non abs at only 11000 miles. I have stupidly thrown money at the problem and ended up with another problem. I originally had no charge, changed the battery (needed to keep using the bike for work and charging nightly was my only option.) I tested the diode resistance as per Kawasaki manual and had readings outside of specified ranges. Changed the rectifier (for a used one from ebay) which made no difference. I replaced the stator (new pattern part). Which resulted in overcharging (18v @ 4000rpm). Changed rectifier again for another used part and it's now charging at 16v. Battery drops to 12.3v overnight. Battery dash light stays on as it's over range allowed. (starting to get used that light staying on now). Have I been unlucky to get two faulty rectifiers or am I missing something? I'm about to diode test the three rectifiers I now have to rule out triple bad luck, hoping for a magic suggestion from this experienced community.