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Thanks Hugh, That's what I suspected. My conning tower height is only 6.5 inches. That makes things even worse for me. http://www.frappr.com/?a=viewphoto&id=2384531&pid=10135785 I hadn't heard about people having trouble charging the AGM batteries upside down. I'll have to do a search. I don't plan to mount my AGM batteries upside down anyways. But I'm very interested in knowing how well sealed they really are. Regards, Brent Hartwig From: edlunddds@comcast.net To: personal_submersibles@psubs.org Subject: Re: [PSUBS-MAILIST] 12 Volt DC Lawnmower Battery Test Update Date: Sun, 6 Jul 2008 22:20:46 -0500 Brent, My hatch is 9.5 inches tall from the hull. When I am on the surface with a one foot chop I need to keep the dome closed or risk taking on some water. As to an enclosed MBT, mine is open and I do loose some air as we tow it but I do not ride in it during the tow and as long as the hatch is secured it will not sink. I then refill the MBTs with one of those battery operated emergency air compressors you carry in your car that I rigged up with a long tube that will reach under the MBTs. I can then step onto the sub, open the hatch and enter it.
Also, I remember some one mounted their AGM batteries upside down and they worked fine until they tried charging them upside down which resulted in fluid loss. Check the archives on that one.
Kyle
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