Some of the new Catalina's come with two different batteries, I was looking at one last month at our Catalina dealer here in Austin. It had a humongous house power and a group 24 or 27 starting battery. And still had the old "off, 1, all, 2" battery switch. You should be able to mix sizes all you want within the same technology. The two common technologies are flooded and SLAs.
The charger should still work fine, it will just take longer to get to a full charge. It's all about amp hours. What you take out, you must put back in, plus the negative efficiency. But I'm going with number 4 ;-) I have no problem starting on one of the two batteries. I would think that a radio should not discharge the selected house battery within a reasonable day sail. John 1985 C27 5956 Cool Change Lake Travis, Austin, TX [EMAIL PROTECTED] wrote: > To All: > I have a question about the batteries. Presently I have 2 - 24 Group > Battery (Brand New-Sears Marine batteries) set up. I was thinking > of putting those batteries on parallel on the #2 battery spot and > installing a 27 Group as a starting battery on the #1 spot. I want to > install a stereo system on the boat an I thought the twin 24 Group > batteries set up as a house battery would last longer. My thinking is, > I would be able to leave the stereo and the instruments on while sailing > without worrying that I am running down the batteries. I also figured > that the extra power that the 27 group battery would give me would make > starting easier. My questions: > 1. Is it a good idea to use 2- 24 and a 27 Group battery in the > same boat? > 2. Would the charging be effected or would there be too much of a > strain put on the alternator charging 2 - batteries together? > 3. Would my Blue Sea Digital Battery reader be able to read 2 > batteries set up in parralle? > 4. Am I crazy for even thinking about doing this????? > Thanks in advance.... > > Andy Eanniello > Slow"MO"tion, #6038 > !985 - Tall-Rig > Nyack, NY
