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cbr flat battery problem


craigwf3
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got a little problem with my 1998 cbr 600f my battery died the other week so I bought a new one (I bought the bike off my mate and he hadnt changed it for about 6-8 years) fitted the new one charged it up and its been fine for a month, but today after a quick run out I came home turned it off and when I tried to start it 10 mins later it wouldn't turn over, the same problem as before. now my neighbour mentioned the rectifier and ive googled it and it looks a easy change but im wondering if the is anything else I need to check or am I best getting the electrics checked, do you guys have any ideas???

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What sort of runs are you doing on the bike?......if it's only a couple of miles at a time you may not be replacing the juice that the starter is using..... :wink: But it deffo sounds like the charging circuit should be checked......could be Reg/Rec......but could be a burnt Stator winding.....so, either check it yourself with a multimeter or take it somewhere to get checked....... :wink:

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Reg/rec is a common weak item on most older hondas, i had to replace mine when i had a cbr,


http://www.offwidth.co.uk/bike/general/ ... ding_2.pdf


follow that flow chart to make sure its definitely the r/r.

I recommend getting a better r/r from electrexworld and not just fitting another crappy one.

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If the battery will take a charge disconnected from the bike I would imagine it should be fine. Long term completely flat is what can kill batteries.


Good that it seems you've found the source of the problem.

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If the battery will take a charge disconnected from the bike I would imagine it should be fine. Long term completely flat is what can kill batteries.


Good that it seems you've found the source of the problem.

 

:stupid:


Batteries can go 'flat' enough to not start the bike, but bikes need a fair amount of umph to turn over. Being left for ages will turn it into an ugly paperweight.


If you use something like an Optimate it has a deep charge (or similar name) function on it for your situation. It's good to keep a trickle charger going on the bike anyway if you can. I had the (well known and dreaded) reg/rectifier problem on my old Blackbird (also a CBR) a few years back. Changed the r/r and kept it on an Optimate for over 3 years and never had a problem with the battery since. Battery was a Motobatt which is a high torque one (whatever that means) and it bursts into life every time.

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i wish i could my garage is away from the house and doesnt have a power supply, but i have had a look at the oxford solariser but i dont know anyone whos used one.

 

just get a solar trickle charger. so long as there is nothing draining the battery, the solar panel will be enough to keep it charged.


this is a big one - you can get smaller ones...

http://www.halfords.com/motoring/bulbs- ... ner-12v-6w


EDIT:

This one is half the price

http://www.halfords.com/motoring/bulbs- ... r-12v-1-5w

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