04-15-2008, 10:37 PM
Hi there, first time/long time. I'm having a small problem with my electrical charging system and was wondering if someone could help. My volt meter on my dash is showing 12-13 volts instead of it's typical 14. I've scraped the terminals off of both batteries (Perko and negative terminal on the block too) but it's not charging anymore than 12.5V at idle. When I give it some gas it'll go up to 13, but never more than that. If I idle for more than 2 minutes, the battery alarm comes on. I've checked the voltage coming off the alternator leads while the boat's running and it's only putting out 12.8V. I know it sounds like an alternator problem, but is there any chance that I'm missing something else? Thanks in advance.