KTM Duke 125 not charging battery

[Fangita]

I have a Ktm duke 125 and it is not charging the battery when running. Thinking it may be the battery I replaced it with a new one, charged the battery using an appropriate charger overnight, but I am still getting a low battery warning. Can anyone help please?

[P.]

Get it running and check voltage across battery with a multimeter.

[Fangita]

Thanks Paddy, found a mate who's got one so I'll do that tomorrow, what voltage should I be getting while it's running?

[P.]

With a few revs, maximum about 14.5V, lowest about 13.5V really.

Idle I'd want low 13s

[Rogerborg]

When I'm Emperor, I'm going to make remedial multimeter use step 1 of the CBT.
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Fangita]

Battery checked with a multimeter.

12.5volts max 3k-4k revs
11.26volts at idle

[P.]

[Rogerborg]

If it's still in warranty, I wouldn't even bother doing that. Down to the dealer (I hope it's close), say "Much fix-fix, chop chop."
____________________
Biking is 1/20th as dangerous as horse riding.
GONE: HN125-8, LF-250B, GPz 305, GPZ 500S, Burgman 400 // RIDING: F650GS (800 twin), Royal Enfield Bullet Electra 500 AVL, Ninja 250R because racebike

[Fangita]

Out of warranty, will check the regulator tomorrow, beer and football now.
Thanks for help so far guys

[P.]

Can swap for a more reliable one, let us know the output AC volts

[Fangita]

Confirmed it's the regulator at a local bike garage, going to leave it to him! Thanks for all your help guys.

[P.]