View Full Version : spotrster charging system help.

04-30-2014, 12:52 PM
have a 91 1200 sportster. suspect charging system might be failing. at rest with ignition off a get 12.8v, started i get a max of 14.8v but after about 10 seconds it starts to taper back down to 12.76v. is this normal?

04-30-2014, 1:18 PM
What makes you think it's failing aside from the meter readings you described? Is the battery not charging while riding?

The voltage readings you gave don't seem to alarming if they're at idle.

What's the meter show at like 3k on the clock?

04-30-2014, 1:50 PM
the battery has been discharging while riding. so i ditched the old battery as it was 6 years old and got a new one. revving it to 3 thousand only made the voltage go up a few tenths of a volt.

04-30-2014, 2:38 PM
I had charging issues and it turned out to be the connector coming from the stator wasn't making a solid connection. CHECK ALL YOUR CONNECTIONS.