Club 80-90 Forums

I have a problem with my battery, believe it may be getting dragged down somehow, when i charge the battery up fully the camper starts no problem this will last for a day. after it has been driven for a 20 + miles and i leave it over night, it wont start, the starter motor will try and start. when i take a voltage reading its around 12.63v dc Can anyone help.

Thanks

Brian

12.6v isnt too bad for a standing battery.

What does it read when driving, ie alternator output?
Remove the negative strap when stopped and then tap it against the battery post and look for a spark to see if there is something still draining gthe battery when stopped, you can do this with a bulb too which is a bit more easy to see. If there is a spark then start going through the fuses to isolate which circuit the drain is on. Start with the cig lighter as this has the stereo usually, a likely candidate. As always check your earths for corrosion free contacts.

It could be that your starter motor is sticking sometimes rather than batt fault?

Are you measuring the voltage while the engine is cranking over. If it drops below 9v when cranking, the battery may be past it. When you measure the voltage of a battery you should really do it 24 hours after charging to let the surface charge dissipate. If you check it straight after charging the result can be a lot higher.

I will look at both these and will let you both know the results.

Thanks

Brian