No Electrical Power, No Clue

[Jcaplanmusic]

2016 People GT300i (duh).  Had been riding around town making several stops.  Everything about performance was fine.  No problems starting.  Turn the key to start after my final stop and I have barely a trickle of electrical power.  So weak that when I pull the brake lever to start it pulls what little remaining charge out completely.  Checked fuses, tested battery, no problems with either.  Had been showing zero signs of struggle up to that point.

Other info that might be pertinent:

-Close to 6000 miles (scheduled maintenance coming up; coolant flush and fuel injectors)
-Kept up with all other scheduled maintenance thus far
-It's really hot and humid here (New Orleans)
-I ride every day and stop and start the engine 10+ times
-Brake levers (particularly the left one) pull charge a little bit, but noticeably, when I'm at idle (the lights dim slightly and the idle speeds up).  This has happened on every bike I've ever owned so wasn't sure if it was a major issue or not, but being electrical I figured mention it.
-Bought this bike near new so this is the first issue I've had

Thanks for your thoughts!

[xsel777]

Get your multimeter onto the battery terminals.
voltage? below 12?
start scoot
check voltage. above 12?
while revving engine,is voltage at 13 abouts?

If voltage at idle remains below or at 12, then probably alternator.

If revving not producing higher voltage, then probably the regulator.

These are my conclusions, based on many years of reading through this forum.

Test everything;assume nothing.





Sent from my Mi Max using Tapatalk

[Stig / Major Tom]

Yep - heat in that part of the USA can shorten battery life.

Stig

[john grinsel]

Probably battery---too many short trips.  Battery 3 years old.

[agilebda]

Sounds like a rectifier (voltage regulator) issue.

Also check to see if the ground wires are all tight.

[Trucker jay]

Need to make sure battery is 10 or 12 amp per hour not cold cranking amps.  I had a battery plus battery in mine the cranking amps was a good bit higher than factory battery but battery light come on almost every time when starting it for only seconds and light might have dimmed some.  I got a motto battery (yellow battery) with the correct draw and no more battery light when starting.