Hi guys!
Let me clear a couple of things up!
The batterys are also for ballast, NOT just the power, my motor is a 24v 350watt, Even with 4 of these batterys, im still going to need more ballast. With SLA batterys, the more capacity, the heavier they are. Would of been pointless buying low capacity batterys only to be needing alot more ballast!
I was going to use 2x car batterys as this is what others have used in the same build (& most car batterys have much higher capacity than what my 12v 22Ah have!) but I opted for these instead as they are much smaller in size, so when I do smaller builds in future, I can use these same batterys. If I bought car batterys, then chances are they will only be suitable for this build which would have meant I would have had to buy more smaller size batterys for smaller builds which would have been a little daft!
I'm doing water test on sunday so I will then know exactly how much more ballast im going to need, but I've done a few calculations & I still think im going to need around another 6-10kg more ballast.
As I explained in my previous post, If 12v is enough to power her (which hopefully it will) then I wont be hooking up all 4 batterys at once for juice as originally planned, I will split them to have 2 sets, each consisting of 12v 44Ah) but all 4 will still be placed in the hull for ballast! ..I may even just have 1 hooked up at a time if 12v, its no biggy.. but all of them will still be in the hull.. as they say "2 birds with one stone!"
Dave out of curiositry, what batterys are you using for your build?
Cheers :)