Michael44
New Member
- Nov 2, 2020
- 7
- Boat Info
- 2004 Sea Ray Sundancer 240
- Engines
- 5.0 Mercrusier with Bravo III
Hi, I owned another cabin cruiser a few years back and just bought my Sundancer 240 a couple months ago. The previous owner had to charge the batteries to test drive. It showed 12.5 to 12.8 on the digital when i first started it, so I thought it was charging ok. I switched to the temp and oil and water gauges mostly to make sure all those were fine.
Well, I have it home, I hook up shore powder (as directed) and batteries are charging fine.
All other power is off, including the battery control switch. I go back the next day, get on the boat, turn the battery switch on and radio, lights, etc, all working good. I turn it all off, except the battery switch, and turn off the AC braker and unplug it from powder.
I go back 2 days later and the batteries are dead 2 to 3 v on both.
I turn off battery switch and plug AC back up and chanrge batteris, works fine.
But when I put a volt meter on battery 1 and turn switch to bat 1 it drains slowly, but bat 2 stays the same voltage. If I switch to bat 2 then bat 1 stays the same and bat 2 drains slowly.
I tracked down all i could for shorts or heat draws, nothing. So, I took the battery wire off the alternator (had a small spark). And the slow drain stopped. Alternator looks to have a bad diod in it. I have another alternator on the way.
Q? Question- is it ok to turn the battery switch on when on AC power and charging the batteries? My lights and other items do not work unless the battery switch is on.
I know, its long but thought i would answer most questions that everyone would be asking first.
Looking forward to chatting with you.
Thanks,
MAG.
Well, I have it home, I hook up shore powder (as directed) and batteries are charging fine.
All other power is off, including the battery control switch. I go back the next day, get on the boat, turn the battery switch on and radio, lights, etc, all working good. I turn it all off, except the battery switch, and turn off the AC braker and unplug it from powder.
I go back 2 days later and the batteries are dead 2 to 3 v on both.
I turn off battery switch and plug AC back up and chanrge batteris, works fine.
But when I put a volt meter on battery 1 and turn switch to bat 1 it drains slowly, but bat 2 stays the same voltage. If I switch to bat 2 then bat 1 stays the same and bat 2 drains slowly.
I tracked down all i could for shorts or heat draws, nothing. So, I took the battery wire off the alternator (had a small spark). And the slow drain stopped. Alternator looks to have a bad diod in it. I have another alternator on the way.
Q? Question- is it ok to turn the battery switch on when on AC power and charging the batteries? My lights and other items do not work unless the battery switch is on.
I know, its long but thought i would answer most questions that everyone would be asking first.
Looking forward to chatting with you.
Thanks,
MAG.