[PSUBS-MAILIST] batteries

[Rick Patton via Personal_Submersibles]

Hi James

Thanks for responding. I thought you were running the rip tide 101,s @
36V.  Did you rig the Minn-Kota rheostat to a foot pedal on your steering
yoke so your hands were free and if so, how did you do it?
Rick

On Mon, Oct 30, 2017 at 11:10 PM, 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
>>> > _______________________________________________
>>> > Personal_Submersibles mailing list
>>> > Personal_Submersibles at psubs.org
>>> > http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
>>>
>>>
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>>
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