Motorcycle Repair: Battery Not Holding Charge, kawasaki ninja zx6r, yuasa battery


Question
Hi,

I have a 1998 Kawasaki Ninja ZX6R (600cc)
I purchased the bike about 2 weeks ago, and the second day I couldn't start the bike (the previous owner installed a brand new battery a week before), the engine would turn over but it wouldn't start, I was told by a mechanic that I had to change my battery because It was a cheap Chinese battery and that It was bad, So I purchased a brand new Yuasa battery and the bike started up right away with the new battery, everything was going well until a week and a half later when the same thing happened again, The bike did not start (the lights came on) but the engine would turn over maybe once and then I would just hear clicking tried that a few times and then the clicking stopped too (as if the battery was completely drained) So I push started the bike, let it run for about 5-10 minutes then took it for a 30 to 45 min ride. Came back turned the bike off. Hoped that the ride would have charged the battery as it should. 20-30 mins after letting thebike cool down a bit, I tried starting the bike again, but It didn't as if the battery was still drained!

What could it be? Is the bike not charging the battery, its a new Yuasa battery! I don't know but I have a feeling that the bike isn't charging the battery and that the bike starts with a new battery everytime until pretty much the new battery gets drained about a weeks time?

Please get back to me ASAP if you can. I thank you in advance for any help! It will be much appreciated!

Answer
Hi Hammad,

1st thing you should do is get a real good trickle charge into the battery BEFORE you try and use it. 2nd, once you have done so, you'll need to obtain a multi meter and test the output of the charging system at the battery. My best guess is your voltage regulator is not doing its job. You should see more than 12 Volts at the battery...

Hope this helps!

p.s. Im sure your 1st battery (the cheap chinese battery was just fine.but a good excuse to cover up an known issue with the bike when you bought it...

~Mark