<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>Rick,</div><div id="AppleMailSignature">for the given space that you have you are not going to get any more</div><div id="AppleMailSignature">amp hours. I.e. if you have a 12V 50ah battery, a 12V 100ah battery is</div><div id="AppleMailSignature">liable to be twice the volume. I would be looking at what was the biggest</div><div id="AppleMailSignature">size traction battery I could fit in the available space..</div><div id="AppleMailSignature">You could wire up your "house battery" in parallel with your other 3 batteries</div><div id="AppleMailSignature">in the pod to give extra amp hours, then use a buck converter off your 36V</div><div id="AppleMailSignature">to give 12V for house supply. You may be able to find 3 batteries that fit</div><div id="AppleMailSignature">the space you have for 4.</div><div id="AppleMailSignature">Be careful of the amp hour rating. Most batteries are rated on a discharge </div><div id="AppleMailSignature">over a 20hr period whereas we have a higher rate of discharge, & this drops </div><div id="AppleMailSignature">the amp hour rating dramatically. And then the more you discharge the batteries</div><div id="AppleMailSignature">the quicker you destroy them, I think 50% is the maximum recommended</div><div id="AppleMailSignature">discharge. So your 100Ahr battery may be 30Ahr (guessing) I am emailing half </div><div id="AppleMailSignature">asleep so check my facts. </div><div id="AppleMailSignature">I have agm batteries & they have slightly less capacity than normal lead acid</div><div id="AppleMailSignature">batteries, but don't spill or give off as much gas.</div><div id="AppleMailSignature">Of course there are lithium iron batteries!</div><div id="AppleMailSignature">Cheers Alan</div><div id="AppleMailSignature"><br><br>Sent from my iPad</div><div><br>On 31/10/2017, at 3:32 AM, Rick Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div>Hank</div><div>My thrusters are 36v with a 46 amp max draw. From my limited understanding of batteries, I thought that tying 3 each 12v 100 amp batteries together gave you the 36 volts but you still only had 100 amps.?not 300 amps? So I am after a 12 v battery with the most reserve amps I can find. </div><div>Rick </div><div><br><div class="gmail_quote"><div>On Mon, Oct 30, 2017 at 1:07 AM hank pronk via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div></div>
<div>Rick,</div><div>I thought your goal was to find a group 27 battery that can handle the discharge rate, more than amp hr rating. I agree they are expensive, and I wonder if they are as robust as a good old fashion lead acid. I would not get to hung up on amp hrs, If you have 6 12v batteries at 100ah, I think that is plenty of juice. Gamma has 900ah at 12v and I have never run out of juice. I need the 900ah because of my long surface transits. If you are towing your sub to the dive site, 600ah will be plenty for recreational diving. The type of dive you do will make the difference. If you are diving on a wreck site, your power consumption will be very low if you have the sub well ballasted. If you have the sub trimmed perfectly, your vertical thrusters will work very little to move you around. Your right about your motors, they will not be working hard often. </div><div>Maybe other K350 owners can comment on how their batteries stand up. I am comparing to Gamma witch has less thrust power than K350 with 3 101's</div></div></div><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div>Hank </div><div><br></div>
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On Sunday, October 29, 2017, 11:12:08 PM MDT, RICK Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:
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</div></div></div></div><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div id="m_5572191727965271287yahoo_quoted_0200922340" class="m_5572191727965271287yahoo_quoted"><div style="font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:13px;color:#26282a"><div><div id="m_5572191727965271287yiv7595398270"><div><div class="m_5572191727965271287yiv7595398270WordSection1"><p class="m_5572191727965271287yiv7595398270MsoNormal">Hank,</p><p class="m_5572191727965271287yiv7595398270MsoNormal">Link came threw. I looked a number of 12v batteries for golf carts but they all seemed to be no more than 100 amps and much more costly than the 125 amp lead acid ones that I have. Was there a different reason that you recommended them?</p><p class="m_5572191727965271287yiv7595398270MsoNormal">Rick</p><p class="m_5572191727965271287yiv7595398270MsoNormal"> </p><p class="m_5572191727965271287yiv7595398270MsoNormal">Sent from <a rel="nofollow" shape="rect" href="https://go.microsoft.com/fwlink/?LinkId=550986" target="_blank">Mail</a> for Windows 10</p><p class="m_5572191727965271287yiv7595398270MsoNormal"> </p><div class="m_5572191727965271287yiv7595398270yqt3782741124" id="m_5572191727965271287yiv7595398270yqt33788"><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="m_5572191727965271287yiv7595398270MsoNormal" style="border:none;padding:0in"><b>From: </b><a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">hank pronk via Personal_Submersibles</a><br clear="none"><b>Sent: </b>Sunday, October 29, 2017 12:29 PM<br clear="none"><b>To: </b><a rel="nofollow" shape="rect" href="mailto:personal_submersibles@psubs.org" target="_blank">Personal Submersibles General Discussion</a><br clear="none"><b>Subject: </b>[PSUBS-MAILIST] (no subject)</p></div><p class="m_5572191727965271287yiv7595398270MsoNormal"> </p><p class="m_5572191727965271287yiv7595398270MsoNormal"><span style="font-size:10.0pt">Hi Rick</span></p><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><span style="font-size:10.0pt">Here is one of the 12v golf cart battery options on eBay. Lots to chose from, I have had good luck with the 6v version of this battery.</span></p></div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><span style="font-size:10.0pt">Hank</span></p></div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><span style="font-size:10.0pt"> </span></p></div><div id="m_5572191727965271287yiv7595398270ydp55f6b6aeyahoo_quoted_9905508524"><div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><span style="font-size:10.0pt">----- Forwarded Message -----</span></p></div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> xxx xxxxx <<a href="mailto:mp13@live.ca" target="_blank">mp13@live.ca</a>></span></p></div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><b><span style="font-size:10.0pt">To:</span></b><span style="font-size:10.0pt"> <a href="mailto:hanker_20032000@yahoo.ca" target="_blank">hanker_20032000@yahoo.ca</a> <<a href="mailto:hanker_20032000@yahoo.ca" target="_blank">hanker_20032000@yahoo.ca</a>></span></p></div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><b><span style="font-size:10.0pt">Sent:</span></b><span style="font-size:10.0pt"> Sunday, October 29, 2017, 4:21:42 PM MDT</span></p></div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><b><span style="font-size:10.0pt">Subject:</span></b><span style="font-size:10.0pt"> </span></p></div><div><p class="m_5572191727965271287yiv7595398270MsoNormal"><span style="font-size:10.0pt"> </span></p></div><div><div id="m_5572191727965271287yiv7595398270ydp55f6b6aeyiv2623057001"><div><div><p class="m_5572191727965271287yiv7595398270ydp55f6b6aeyiv2623057001" style="margin:0in;margin-bottom:.0001pt"><span style="font-size:9.0pt">VMAX MB127 12V 100Ah Golfcart AGM Deep Cycle Group 27 SLA Battery</span><span style="font-size:10.0pt"></span></p><p class="m_5572191727965271287yiv7595398270ydp55f6b6aeyiv2623057001" style="margin:0in;margin-bottom:.0001pt;min-height:14.0px"><span style="font-size:10.0pt"> </span></p></div></div></div></div></div></div><p class="m_5572191727965271287yiv7595398270MsoNormal"><span style="font-size:10.0pt"><a rel="nofollow" shape="rect" href="https://www.ebay.com/itm/VMAX-MB127-12V-100Ah-Golfcart-AGM-Deep-Cycle-Group-27-SLA-Battery/271121536888?hash=item3f201a5778:g:WG0AAOSwVctY5TrT" target="_blank">https://www.ebay.com/itm/VMAX-MB127-12V-100Ah-Golfcart-AGM-Deep-Cycle-Group-27-SLA-Battery/271121536888?hash=item3f201a5778:g:WG0AAOSwVctY5TrT</a> </span></p></div><p class="m_5572191727965271287yiv7595398270MsoNormal"> </p></div></div></div></div></div></div></div></div><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div id="m_5572191727965271287yahoo_quoted_0200922340" class="m_5572191727965271287yahoo_quoted"><div style="font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:13px;color:#26282a"><div><div class="m_5572191727965271287yqt3782741124" id="m_5572191727965271287yqt48889"><div>_______________________________________________</div></div></div></div></div></div></div><div><div style="font-family:Helvetica Neue,Helvetica,Arial,sans-serif;font-size:13px"><div id="m_5572191727965271287yahoo_quoted_0200922340" class="m_5572191727965271287yahoo_quoted"><div style="font-family:'Helvetica Neue',Helvetica,Arial,sans-serif;font-size:13px;color:#26282a"><div><div class="m_5572191727965271287yqt3782741124" id="m_5572191727965271287yqt48889"><div><br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div></div></div></div></div></div>_______________________________________________<br>
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