No power to instruments or starting

[robparky]

Kept Battery topped up over winter and started ok a few weeks ago. Tried recently and nothing when turn key on instruments, lights, starter switch or my volt meter wired into the aux power circuit.  Any ideas before i start with circuit light- Side stand switch has been playing up along with gear position selector which i believe is damp related.  Battery fully charged.


Thanks Rob



2007 RTP

[David.]

Is the "battery fully charged" an indication from a battery charger or has a voltage check on the battery itself been done with a voltmeter.

[robparky]

Battery charger. Multimeter has also given up the ghost.

[David.]

The battery may have become sulfated, http://support.rollsbattery.com/en/supp ... -sulfation

"When hard sulfate is present, the battery shows a false voltage, higher than it's true voltage, fooling the voltage regulator into thinking that the battery is fully charged.
This causes the charger to prematurely lower it's current output, leaving the battery discharged."

[robparky]

Thanks. Will check this out. Neighbour also has old BMWs so enlisting his help.

[robparky]

And the problem was-- loose +ve on the battery- Arghh such basic error. Don't know how it had changed between last start up and now. Hasn't moved off the stand.


Oh well at least it is sorted. Ordering multimeter as treat to self.


Thanks


An embarrassed biker. :alas: