[PSUBS-MAILIST] batteries

Tue Oct 31 09:39:12 EDT 2017

I have continuous duty ones at a suitable current rating.  Cant
remember off hand.  But I don't have the reversing because I can
rotate the side motors for reverse.  So I just have 1 relay per motor.
Super simple.

Also have the standard minn kota controller on the rear thruster.
which allows reverse and speed control.  All 3 items all fit into one
box with a cooling fan for good measure.

Sorry, cant recommend anything other than the simple setup I have.

On 31 October 2017 at 11:55, hank pronk via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:
> Hi James,
> I am using continues duty relays and it takes 4 relays per motor.  On my
> vertical thrusters I am using reversing relays (single relay)  but they are
> not continues duty, witch is okay.  I want to simplify by using reversing
> relays (continuous duty) on the main motors.  I thought maybe you already
> have that and could recommend what works.
> Hank
>
> On Tuesday, October 31, 2017, 5:14:50 AM MDT, James Frankland via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hi Hank,
>
> I cant remember off the top of my head now.  I just had a quick search
> and I cant find them.  They are just standard high current 24v pots of
> some sort.
>
> I seem to remember they were similar to yours.  Or some that you had used.
>
> James
>
> On 31 October 2017 at 10:25, hank pronk via Personal_Submersibles
> <personal_submersibles at psubs.org> wrote:
>> Hi James,
>> What type of relays are you using?
>> Hank
>>
>>
>> On Tuesday, October 31, 2017, 3:10:27 AM MDT, James Frankland via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> Hi rick,
>> I'm here.  What do you want to know?  I'm using minn Kota rip tide 80's at
>> 24v.  2x banks of 4 agm's. These are wired in 2 pairs of batteries in
>> series
>> with both pairs connected to the main terminals.  I have a standard heavy
>> switch so I can use each bank separately or both together.  I used heavy
>> tinned marine cable.  Can't remember the thickness.
>>
>> I find my motors a little underpowered, but other than that it seems fine.
>>
>> Aft thruster has the minn Kota controller, I originally had those on the
>> sides but found it a pain, so I changed those to have just on/off relays.
>> Much better.
>>
>> Regards,
>> James
>>
>> On Monday, 30 October 2017, Rick Patton via Personal_Submersibles
>> <personal_submersibles at psubs.org> wrote:
>>
>> Alan
>> Yes there are 2 separate pods each containing 4 each 12v batteries , 3 for
>> the 36v for thrusters & 1 for the onboard systems.
>> DAN H built his per plans and specs and is running his stern thruster off
>> one side & and sides off the other side but he is not running Minn-Kotas.
>> I am hopping James Franklin will chime in as he is using the Minn-Kotas in
>> his.
>> Rick
>>
>> On Sun, Oct 29, 2017 at 8:13 PM Alan via Personal_Submersibles
>> <personal_submersibles at psubs. org> wrote:
>>
>> Rick,
>> I am not familiar with the k350 battery set up, but are there two
>> battery pods with 3 x 12V batteries in each pod?
>> What are the other k350 owners doing? Do they run the 3 thrusters
>> off the 2 battery pods similtaneously i.e. connect both pods in parallel.
>> If you did this then you would only be drawing half the amps off each
>> battery pod, than you would be if you were using one.
>> I wonder what traction batteries mobility scooters use?
>> Cheers Alan
>>
>>
>>
>>
>>
>> Sent from my iPad
>>
>>> On 29/10/2017, at 9:27 AM, Rick Patton via Personal_Submersibles
>>> <personal_submersibles at psubs. org> wrote:
>>>
>>> I am trying to size my wire for the 36v side from where the power comes
>>> into the sub to selector switch to hot buss bar and was wondering if that
>>> was something that someone could answer. Also I was told by Minn-Kota
>>> that
>>> they recommend group 27 marine batteries.
>>> I have a couple of deep cycle (marine batteries) on my boat and they are
>>> 550 cca and 125 amps reserve capacity.
>>> My plan is to run all three Minn-kota thrusters off of one side at a time
>>> and their max draw is 46 amps max so there is 138 amps if all three
>>> thrusters are wide open. I doubt I would ever have all three maxed for
>>> more
>>> than short spurts but want to be repaired for the worst case scenario
>>> like
>>> if I am bucking a strong current.
>>> I also will be running 6 outside LED lights off the same bank and though
>>> I
>>> can dim them and selectively use them, all on at max would be about a
>>> 16.6
>>> amp draw as well. Now most of the time I will be using the thrusters at
>>> minimal draw and not all 3 at the same time and the 6 lights will
>>> probably
>>> never all be on at the same time.
>>> If everything was wide open, I would be pulling about 155 amps from a
>>> bank
>>> that has a reserve capacity of 125 so it would deplete the bank rather
>>> fast
>>> and may even damage the batteries due to a quick drain? So,,, first
>>> question...would 2 OTT wire be sufficient from battery source to bus bar
>>> as
>>> long as I am not running full tilt on everythig and second... since I
>>> have
>>> to stick with a lead acid system due to design, can I get a group 27
>>> battery
>>> that can deliver much more than the 125 amps I have on my boat?
>>> I also have the option of putting the battery selector switch on both
>>> banks if I have to but would rather deplete one bank at a time if can.
>>> Comments appreciated.
>>> Rick
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>>> Personal_Submersibles at psubs. org
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>
>>
>>
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