[PSUBS-MAILIST] Hey Hugh

Sat Jul 18 21:07:54 EDT 2015

Hi Cliff,

Yes I have main contactors and switchable fuse/breakers but when some numpty leaves the switch on it is expensive.  Not only that but the BMS boards feed off each other and need power. The other is the usual having batteries in parallel and them talking to each other.  If you are constantly using the batteries and recharging them then only half the issues but these things have a tendency of sitting around during the winter etc.  Hugh 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Clifford Redus via Personal_Submersibles
Sent: Sunday, 19 July 2015 11:39 a.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] Hey Hugh

Wow, she looks great!  I know it has been a frustrating hall to get to this point.  Hang in there.  Keep dreaming about that first real dive!  At some point it would be helpful to us that planning on converting to Lithium Batteries at some point , to hear your lessons learned on the batteries and BMS to keep us from running into some of the issues.  I assume you have an main contactor that electrical isolates the main battery bank from all boat systems.  With this contactor open, you still are getting draw offs?

Cliff

On Sat, Jul 18, 2015 at 6:09 PM, Hugh Fulton via Personal_Submersibles <personal_submersibles at psubs.org> wrote:

Hi Brian,

No.

This one.

Hugh

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Brian Cox via Personal_Submersibles
Sent: Saturday, 18 July 2015 4:58 p.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] Hey Hugh

Is this the sub-con in the photos on the psubs web site?

Brian

--- personal_submersibles at psubs.org wrote:

From: Hugh Fulton via Personal_Submersibles <personal_submersibles at psubs.org>
To: "'Personal Submersibles General Discussion'" <personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Hey Hugh
Date: Sat, 18 Jul 2015 10:03:25 +1200

About 98% but having a hell of a time with batteries and battery management systems.  Trying to find draw-offs when not in use.

Just had to pull out the port engine because of a battery failure.  With various sparkies playing with it, it is not one persons responsibility to turn off the power and maintain the charge on the batteries with the result that we get battery meltdown.  We have to have an idiot proof system.  Gets a bit depressing.

Hugh

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Brian Cox via Personal_Submersibles
Sent: Saturday, 18 July 2015 9:45 a.m.
To: PSubs 
Subject: [PSUBS-MAILIST] Hey Hugh

Hey Hugh,

                      Aren't you finished with that boat of yours yet ??

Brian _______________________________________________ Personal_Submersibles mailing list Personal_Submersibles at psubs.org <http://eonapps/ft/wm/page/compose?send_to=Personal_Submersibles%40psubs.org>  http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles 

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