Bike broke down - why won't it charge the battery changed!

[StevenF]

Another day another problem...

Ran out of petrol today, managed to get some and everything was fine. Went into the GPO, came out and my bike wouldn't start - the battery was completely dead. Long story short.... got the AA out who stuck it on charge for a bit and followed me home - top guy

Why did this happen in the first place? It's a brand new battery, only been used for 2 weeks! For some reason the bike isn't charging it. I know cars have alternators, but what is responsible for keeping a bike battery charged?

I need my bike to be fixed
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My Project - Honda CBR 600 F2/FM

[yen_powell]

You have a CBR600 according to your signature. This means your regulator has packed up. It is the same regulator I have got on my Africa Twin, same thing happens to them occasionally.

Get a volt meter and with the engine running measure the voltage across the terminals at tickover, it hould be about 12ish volts. Rev the engine a little and the voltage should rise to about 14 volts. If it doesn't then your battery won't be charging.

Easy to change for a new one, two bolts and a plug.
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Blackmail is a nasty word........but not as nasty as phlegm!
XT1200Z and a DR350 in bits

[StevenF]

[StevenF]

Just called my local Honda dealer - £120 + VAT Don't have that sort of spare cash just now with already needing new tyres and other commitments.
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My Project - Honda CBR 600 F2/FM

[finpos]

make sure you have a fully charged, un-knackered battery attached to the bike before concluding anything.

f.

[StevenF]

[finpos]

10V standing is not fine!

f.

[StevenF]

[supZ]

[finpos]

You can't do any reliable diagnosis, including the charging system, with a flat or busted battery. While you almost certainly have a wiring fault or a regulator fault, but all depends how sure you want to be before forking out 120 plus vat. Also note your new battery may be shafted now as well if it's been under or over charged.

f.

[Minty]

I bought mine off Ebay, £56.

Is there anyone near you with a same era bike, you can try theirs out as a test?

Edit

I am in Croydon if you want to try mine. 97 CBR 900.
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My fingers smell of your mum.

[StevenF]

[Minty]

I would have thought so. I remember looking for my one and was surprised at just how many different models used the same one.

Have a google and see if the connectors are the same?
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My fingers smell of your mum.

[temeluchus]

I personally would be tempted to avoid a honda genuine part as it possibly would be another duffer. Hondas are generally put together well, but seemed to have bought their rectifiers from the lowest bidder.
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Some shite cruiser. Now with guns and FREEDOM!

[Robby]

When I had a CBR6 I bought one on ebay from Hong Kong for about £25 new. It worked, might not last long, but nor does the £120 genuine one.

[supZ]

[yen_powell]

I have seen ATs with holes drilled in the side panel that covers the regulator. The theory being that it's overheating which kills them so a bit of extra air over the cooling fins might help.
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Blackmail is a nasty word........but not as nasty as phlegm!
XT1200Z and a DR350 in bits

[Serendipity]

I've only recently learned that Honda stators tend to expire after a certain amount of time, expecially if you do a lot of low speed riding. Urban commuting tends to kill them.

If the reg/rec turns out to be good look at the stator. Also the charging problems I had on my CBR6 turned out to be a bit of the loom shorting on the frame. The reg/rec was innocent!
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2016 CBF1000F - Commuter heaven | 1994 CBR600FR - Awaiting defibrillation

[StevenF]