Author Topic: battery not charging  (Read 1672 times)

Offline emilios

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battery not charging
« on: 26.06. 2010 15:02 »
Hi
My battery was not charging and i thought it was time to replace it..
I put a new one charged full but after a couple of short rides is empty again..
My ligths are getting brigther when i open throttle so its not dynamo issue..
Can i set with some easy way the regulator to fix problem or should i replace regulator..
Thanks
1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
Cyprus

Offline Hubie

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Re: battery not charging
« Reply #1 on: 26.06. 2010 22:18 »
G'day mate,

I am going through the same trials at the moment with my a10.  If I understand correctly, start the bike, get lights on, disconnect the battery and see what happens.  If you have no lights, reg is stuffed.  What is it showing on the ammeter?
1959 BSA Golden Flash
1956 Royal Enfield Super Meteor
1955 Royal Enfield 350 Bullet
2007 Harley Davidson Sportster 1200 Custom

The early bird gets the worm, but the second mouse get's the cheese!

Offline a10gf

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Re: battery not charging
« Reply #2 on: 26.06. 2010 22:45 »
Using a multimeter in volt dc, does the voltage across the battery poles increase when engine rev increases ? If not, first of all check the regulator cutout function.

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Offline trevinoz

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Re: battery not charging
« Reply #3 on: 26.06. 2010 23:25 »
Your lights are getting brighter but is the voltage high enough?
With your lights off, check voltage across the battery terminals. It should be a bit over 7 volts.
Turn on lights and it should still be around the 7 volt mark.
If you have an electro mechanical regulator, it is relatively easy to set and adjust, just follow the BSA service sheet instructions.
If you are not confident that you can do this, an electronic regulator is for you.
You should also follow the dynamo testing instructions also.
Trev.

Offline emilios

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Re: battery not charging
« Reply #4 on: 27.06. 2010 20:27 »
Thanks guys..
I will check and i will let you know
1956 BSA A10 Plunger
1954 BSA B31 Goldstar Replica
1970 Honda cb750K0 project
Cyprus