KTM250 XC-FW (2011) 6 Days - Not Charging

[Fino]

We're trying to fix my mates bike, but we don't know much about electrics...

Here's some relevant information;
- Charge the battery and the bike electric starts and runs fine
- The battery is not charging when the bike is running
- Battery dies after a while and will not electric start
- Bike starts on the kicker no problem and runs fine

So, we thought reg/rec and replaced that... Exactly the same as above - did not fix the problem.

We checked the output from the generator and it was c. 50 volts. Only other thing that might be useful - the bike has a lithium ion battery. Not sure if this affects anything?

Any pointers / checks would be appreciated. Going to try and get it sorted tomorrow for rising Friday.

Thanks in advance.

[Dalemac]

Does the voltage increase from 12v when the engine running?

At what voltage does the multimeter say at tickover, 2000, 3000, 4000 rpm?

If you are sure the alternator/reg rec is fine, the battery is probably duff.
____________________
YBR125 -> GPZ500S -> SL1000

[Fino]

Thanks for the response. With the engine off it is 13.22 volts. With the engine running, at any rpm, it's still 13.22 volts.

We'll re-check the generator tomorrow and try a new battery.

[Dalemac]

[Fino]

Thanks mate. Will do.