LX255 charge light on

[GR3]

My charge light is on and voltage at battery is 12.8v. When I unplug the Battery Discharge Sensor the voltage goes to 13.5v an light goes out. What's wrong?
Thanks

 

[tomplum]

Welcome to the forum! I do know that the sensors fail. ~ $20 or so. Sounds like you've done some basic checks. It may be easier to replace it and go from there if you need to. AM126691

 

[GR3]

What does sensor do? It seems to be charging and not over charging.

 

[tomplum]

I've seen them turn on the light when battery and charging system were all working fine. Off hand I think that it sense the charging system isn't working that it would turn the light on. Where it measures I dunno w/o digging in the manual. I assume maybe off the regulator and to the modular switch? You could verify the charging system output both at the battery and the switch. Do a test with the rider off and then with it running at WOT. Also check for the presents of AC. A healthy battery is 12.6 VDC BTW. Running and charging a battery that has been partially discharged you might see 13.5 - 14 ish VDC. No more than a trace of AC should show up at the switch or battery.

 

[GR3]

It does raise volts to 13.5 when unplug at battery. When its plugin its less and the battery discharges eventually and goes dead. I don't know how its going todo with unplugged but it seems that it will charge. I did change the regulator while back and that didn't fix problem.