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May 10

Posts: 1

StuHarris says:

ZX6r 636 2002 Battery keeps dischaging - HELP!!!

I have a 2002 ZX6R 636.

I bought it a few months ago and its always run fine. It has no alarm fitted.

10 days ago I noticed that the right indicator was flashing faster than the left which I have been told is a sign of a dying battery.

Then, overnight, the battery discharged and couldn't be saved by putting it on charge overnight.

I decided to buy a new battery and the bike started first time and ran well for a week, although the indicator still flashed quickly.

Yesterday the bike refused to start again - no power at all. I had ridden it the previous day for 2 hours.

I have tried to charge the battery again today but the battery is completely dead again.

Its parked away from my house so cant put it on an optimiser. I also don't have a device for testing the power!

Please help, I have no idea what to do now.

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  • Posted 5 years ago (27 May 2010 18:02)

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Aug 02

Posts: 468


You need to get the engine started and somehow measure the voltage across the battery at a fast tickover. If you haven't got 14.2 - 14.5 volts, the charging system isn't working.
Doing this first might just have saved you the cost of a new battery.

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Apr 08

Posts: 3042

AdieR says:

parasitic current draw

is one possibility (a cheap clamp meter will show power draw).

Is your alternator charging properly?

Have you checked your reg/rec?

Have a look for any loose, broken or damaged wires and any loose plugs.

Hope that helps.

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Sep 07

Posts: 2877

James600zx says:

Not charging.

Check the connector between the alternator and the regulator/rectifier for signs of burning.

Re. the indicator, if the bulb blows in a rear indicator the front one on the same side will flash faster, and vice versa. An incorrect bulb my have a similar effect.

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Jul 08

Posts: 14

skittles6969 says:


James is spot on with the reg/rec. Had this problem on a zzr600. The burning is very common. I also had a problem with the ignition connector, which was a bitch to find! Go through the whole bike and disconnect every connector and check them for burning. It's better to replace them than clean them up.

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