That's designed for off road bikes with minimal charging systems.
Good chance it will explode on a 'real' charging system.
Don't take this too personal, I haven't launched into a tirade for a long time. (I been sick ;D)
First off, do at least a minimal amout of research before posting question.
If anyone is too stupid to find out what type of charging system they have, YOU DON'T FUCK WITH IT. (REALLY
)
Just because you can hack a decent bike up and then later get it running, it doesn't make you a bike builder, mechanic or 'artist'
There are two basic alternating current (AC) charging systems, electromagnetic (EMS) and permanent magnet (PMS)
Go back to high-school physics to see how they work :
If you have or are doing a degree in electronics, this is simple stuff (so you probably wouldn't be asking)
I'm pretty certain your Kawasaki has an EMS, almost identical to CB400/500/750 Honda.
Voltage is regulated but amperage is not.
What it mean's, you can have about 20~30 amps hitting battery when regulator switches on/off.
(I regularly weld on 20 amp setting)
Stock battery can 'absorb' excess current, average rarely goes over 6~8 amps, usually lower if everything is in good condition
When you switch to smaller battery it may react differently, if you keep up on maintainance it may be OK (sealed batteries are not good from this standpoint, they do 'boil' dry then have all sorts of wierd problems)
OK, rant over for now
PJ