Weird Electrical Issue '17 FC450

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4/2/2018 6:36 PM

I was doing some basic stuff on my FC450 today. Pulled the seat of and noticed rust on my battery terminals. I pulled the battery and cleaned all my terminals and reconnected the battery and all I got was a click. Voltage on the battery which is the original was at 12.6 volts. I got an intermittent shot to the starter and fuel pump and then back to clicks, then nothing. My battery voltage is now at 3 volts. The only issue I was having was maybe in my head thinking I needed a new battery as the bike seemed to turning slower than my buddies 18 KTM SXF450 and another buddies 17 SXF350. I ran the bike yesterday for a bit and the day before when I washed it. I checked the fuses and they are OK. I have the battery on a non-desulfating battery tender waiting to see what I get when I get it back to 12.6 volts. I went through my service manual real quick but didn't find anything other than the main fuse. I was checking into batteries today and will probably go with a MPS featherweight replacement. Has anybody experienced anything like this? Do these batteries just flat out die all at once? Any help here so I don't lose sleep overnight? Thanks.

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The older I get, the faster I was.

4/2/2018 6:49 PM

https://www.vitalmx.com/forums/Tech-Help-Race-Shop,42/KTM-Husky-LiPo-Battery-PROBLEMS,1337102
Read this posting still up on this site. The 2 LI batteries listed are what you need. The factory batteries were junk.

Paw Paw

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4/2/2018 7:24 PM

I get it, I just don't get why cleaning the battery terminals started this issue. It is running again. I loosened everything and re-tightened the terminals and it seems to be working again. I'll check in the morning and see what happens. It gets a new battery tomorrow anyway.

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The older I get, the faster I was.

4/2/2018 8:52 PM

I am sure it's unrelated, but I had to rewire my starter button wires because the bikwnwouldnt start

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