Almost-B-Good - 12/23/2008 10:08 AM

The only problem with multiple batteries in parallel is that it takes longer to recharge them. Your charger has a finite charging current so the more power you use from the multiple batteries, the longer the time to replace it. This usually isn't a problem at home but at a remote vacation resort, using a 100 feet of extension cord or more, you may find yourself with less and less reserve each day even with the multiple batteries. I always ran two in parallel for my 12V system and had on the fly charging capabilities too. Still found a few days where the batteries were getting weak towards the end of the day.