RCU Forums - View Single Post - will 12v 15A kill my power panel?
View Single Post
Old 01-05-2007, 11:16 PM
Senior Member
Join Date: Nov 2003
Location: Edgewood, TX
Posts: 294
Likes: 0
Received 0 Likes on 0 Posts
Default RE: will 12v 15A kill my power panel?

You can use any battery as long as you have 12 volts, don't change the fuse you'll be asking for trouble. The power panel will only draw as much amperage as it is loaded with, doesn't matter what the battery amperage rating is. I use an 80amp deep cycle battery from my camper to charge my batteries at home because it is just sitting in the garage. But make sure you wire it for 12 volts and not in series with 24v. And if you put a larger fuse in it, if you short it out or wire it backwards the fuse won't blow and you're likely to burn it up. I did that out of "necessity". I was at the flying field and blew the fuse in my quick charger hooking it up backwards so I replaced it with the only fuse I had that would fit, I never replaced that fuse and the next time I hooked it up backwards....smoke!

Anyway, short answer, make sure you have 12 volts and you should be gold.

I don't know how you charge your 12 volts but where I work we use lots of the SLA batteries that are just bigger versions of the batteries people use in there flight box and I've looked into using more than one battery for my camper. The battery strings for our stuff is wired in series, but the camper is parallel, either way if one of the batteries is less than good it will diminish the good battery. In other words, say for instance you leave the batteries tied together even while charging, if one of the batteries has a bad cell it can draw more of the charge current which causes the battery to get hotter making the battery worse...then that battery may actually draw juice from the other battery equalizing the batteries which could drop the battery below the optimum voltage causing cells to go bad in that battery...shortening the life of both batteries. We usually replace an entire "string" when we replace one. If your batteries are close to the same age and have been kept properly...it probably wouldn't be significant. Sorry that's not very clear, but I'm to tired to reword it, hope it helps a little.