It's a good thing I have a towing kite on the sub then. Who would want to drive there sub around all day anyways. ;)' At the moment I'm looking at trying to fit in 6 large semi truck size Deka Intimidator 9A31 AGM batteries, and remove some of the lead from the keel plates to balance things out. If that doesn't work out in the CAD model assembly, then I'll put six car size Deka Intimidator 9A34 AGM batteries in. I have a small amount of space to work with, so the box type Dekas will hold more lead and thus power, when compared to the Optimas. From: kocpnt@tds.net To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] Lifting K-250 Off Trailer the Hard Way Date: Tue, 9 Dec 2008 05:30:33 -0600 Hi Brent,
Your idea sounds good to me as it is similar to what I will be using. I think you will have battery life issues. After calculating mine I will have less life than I was hoping for and I will have 3 - 36 volt minkotas and two banks of LARGE 6 volt batteries hooked in series.
Tha batteries that I will be using and are U3050S with 305 amp hours. They have 175 miniutes reserve capacity at a 75 amp draw and 675 minutes reserve capacity at 25 amp draw. At full power with all three thusters I will be drawing 46 X 3 or 138 amps. I originally thought you could add the reserve capacity of all batteries up, but my battery says the draw is the same and you can add the voltage.
In my case with VERY rough interpolation I think one bank of 6 of these large batteries will last me about 100 minutes with all three thrusters at full power. Two at full power will give me about 145 minutes. and one at full power will give me about 360 minutes. Then I will need to switch banks.
I believe that your intended batteries are much smaller and you might be better with smaller thrusters.
Before you buy thrusters you probably talk to someone knowledgable in the battery area.
Best Regards,
Jim K
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