12V low alarm

[moukie]

Hello,
I have a 2004 GTX Wake with about 80 hours that has shown this alarm intermittently since I bought last Fall. The machine runs perfect, but once in a while the 12V low alarm comes on. Since I only take it out every few weeks, I charge the battery before I take it out. It does not appear to kill the battery, but I have not chanced it so I can not say for sure. When this alarm has popped up, I usually tell my kids I am tired and we load up and head for home....HeHe.
I have an identical non-Wake model, so I can do comparative analysis fairly easy. I checked and both batteries have good voltage non-running. Both charge at 13.8V at idle, and both charge at 13.9V at 4,000 RPM. The Wake edition also has the little red warning light flashing intermittently, but runs great. I have pulled all fuses to verify no blown ones.

Any thoughts on what to check next?

Thank you much.

 

[red2blue]

Hello,
I have a 2004 GTX Wake with about 80 hours that has shown this alarm intermittently since I bought last Fall. The machine runs perfect, but once in a while the 12V low alarm comes on. Since I only take it out every few weeks, I charge the battery before I take it out. It does not appear to kill the battery, but I have not chanced it so I can not say for sure. When this alarm has popped up, I usually tell my kids I am tired and we load up and head for home....HeHe.
I have an identical non-Wake model, so I can do comparative analysis fairly easy. I checked and both batteries have good voltage non-running. Both charge at 13.8V at idle, and both charge at 13.9V at 4,000 RPM. The Wake edition also has the little red warning light flashing intermittently, but runs great. I have pulled all fuses to verify no blown ones.

Any thoughts on what to check next?

Thank you much.

Load test the battery. If no drastic drop in voltage then check all connections. If all's well....pull the top 30 amp fuse and look for "scoring" on the contact points. Replace if you see some. If prob reoccurs you'll have to swap the female side of fuse connection. Not difficult....lil time consuming is all.

 

[mkov608]

Try Deoxit on all of your MPEM electrical connections. My intermittent gremlins left after I tried it.

 

[moukie]

Thanks for the advice.
I had Advance test battery several weeks ago, and it was OK. I pulled all fuses, including the two larger ones on left. All look good, and the 2 on side have a die-electric grease coating. Nothing else jumps out at me. Honestly, it still looks new; never been in salt water and low hours. No signs of corrosion anywhere on ski.
I had to replace battery in other ski Saturday; replaced with a nice Duracell unit. I will swap the batteries next time out, and see if that has any effect.

Any other thoughts?