[PSUBS-MAILIST] (no subject)

Sun Mar 8 19:27:31 EDT 2020

don't know much about batteries but I haven't bought them yet. There gonna
be AGM 12 volt batteries so good idea about contacting the manufacturer to
see what they say. Boat won't be used commercially so would be several days
in between dives at least so maybe a 2 and 10 amp charge setting would be
ok?
Rick

On Sun, Mar 8, 2020 at 11:24 AM Alan via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> Rick,
> If you want to use your submarine semi-commercially or do multiple dives
> in a day I would go for a charger with a higher amp rating for a faster
> charge;
> however there would be a limit, as if you charged them too fast the
> batteries
> would off gas more. I am not sure what batteries you have, but there would
> probably be data on charging rates. Maybe look at how fast you could charge
> them with chargers of varying amp ratings & factor that in.
> If you have time & are going to charge them overnight then ignore the
> above.
> Alan
>
> On 9/03/2020, at 9:16 AM, Rick Patton via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Hey guys, any other feed back on what you use for a battery charger for 12
> or 36 volts, Sean, whats your input?
> Rick
>
> On Sun, Mar 8, 2020 at 9:48 AM Brian Cox via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>> Alan,           According to the specs an my batteries is shows a low
>> voltage of 5 volts .     But better battery life if discharged less than 50
>> %
>>
>>
>> https://resources.fullriverbattery.com/fullriver-battery/external-media/spec-sheets/DC220-6.pdf
>>
>>
>>
>>
>> Brian
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Subject: Re: [PSUBS-MAILIST] (no subject)
>> Date: Sun, 8 Mar 2020 21:29:48 +1300
>>
>> Brian,
>> It is recommended not to take lead acid batteries below 50% charge,  or
>> 12.2V.
>> So 48.8V.
>> However when you have a heavy load on them they indicate a lower voltage
>> than
>> what they will be if you stop the motor & let them recover.
>> Alan
>>
>>
>>
>>
>> On 8/03/2020, at 7:04 PM, Brian Cox via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> David,   yes I'm running off my batteries, they are AGM, I have eight
>> 240  ah  batteries.  I'm not sure how low I can go with the voltage,   I
>> believe the storage indicator has a low limit where it would read zero, but
>> I'm pretty sure the motors will run on 36 volts,  there is most likely a
>> recommended low voltage for the 12 volt batteries.   I ran them for 6 hours
>> and the storage indicator was telling me 40% full.  Voltage was 44.3
>>
>> Rick,  this is the battery charger I have:
>> https://www.batterypete.com/chargers/golf-carts/delta-q-quiq-48-volt-18-amp-912-4800/?gclid=Cj0KCQiAqY3zBRDQARIsAJeCVxP7pOTpKjANY_Z4leDJMXsag_kgsFsDIKImLms-Qd7CIh43hEoq7_oaAruDEALw_wcB
>>
>> Brian
>>
>>
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: David Colombo via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Subject: Re: [PSUBS-MAILIST] (no subject)
>> Date: Sat, 7 Mar 2020 21:02:11 -0800
>>
>> Brian, are you running them from your actual batteries? Are they deep
>> cycle lead AGM, or LIPO4? What's the cut off voltage?
>> David
>>
>> On Sat, Mar 7, 2020, 7:58 PM Brian Cox via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> It's been 4 hours now and my voltage is at 46.44 volts
>>
>> Brian
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Subject: Re: [PSUBS-MAILIST] (no subject)
>> Date: Sun, 8 Mar 2020 15:48:43 +1300
>>
>> Hi Brian,
>> 3hp is 2,200W, so 500W with no load seems excessively high.
>> Just measured mine & it's .9Amps (900mAh) for a 1500W compensated motor
>> running in a 5cst silicone oil. Running off 48V also. So under 49W.
>> I think you have a large prop on your motors. I just saw your gearing
>> ratio, but the
>> loss shouldn't be that much.
>> I would test them individually in case one is at fault.
>> Cheers Alan
>>
>> On 8/03/2020, at 2:54 PM, Brian Cox via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> Alan,             They are 3 hp golf cart motors, true there is no load
>> but If I kept the same amp draw while actually at sea then it seems it
>> would be equivalent.     Under actual conditions it would probably be going
>> very slowly while drawing 21 amps ( 10.5 amps per motor ) .
>>
>> Brian
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Subject: Re: [PSUBS-MAILIST] (no subject)
>> Date: Sun, 8 Mar 2020 14:21:54 +1300
>>
>> Brian,
>> I take it that there is no load on the motor!
>> That seems a high power consumption, 500 Watts per motor.
>> Have you got the specs for those motors? Have you checked them
>> individually?
>> Alan
>>
>> On 8/03/2020, at 1:26 PM, Brian Cox via Personal_Submersibles <
>> personal_submersibles at psubs.org> wrote:
>>
>> There are some times when 110 vac could be needed, like computer stuff.
>>  Just a thought, we can have an open mind on the subject !
>>
>>
>>   Right now I'm running my motors to see how long they'll go.  It's a
>> kind of cool rainy day so the temperature is close to what the ocean would
>> be .   I've got the oil expansion tube going into a bucket so I can get an
>> idea how large of a reservoir I will need to take care of the expansion.  I
>> think I'm going to opt for just a reservoir on the motor side and then I'm
>> running a hose up high and then back down to take care of the compression
>> up the tube for when I submerge.  Since most of the compression of air will
>> occur in the first 30' the water should never get high enough ( in the
>> tube) to go over the hump and get into the motor compartment.   So the
>> whole system will be open .    I'm also monitoring Voltage ,  Amp draw, and
>> ,  Watts     48 volts       21 amps       1030  watts    - two motors
>> running  .
>>
>>
>>
>> Brian
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> To: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
>> Subject: Re: [PSUBS-MAILIST] (no subject)
>> Date: Sun, 8 Mar 2020 00:06:47 +0000 (UTC)
>>
>> Why complicate a simple solution?  this works great!  Bad Brian!
>>
>> Hank
>>
>> On Saturday, March 7, 2020, 4:59:49 PM MST, Brian Cox via
>> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>>
>>
>> There are a lot of 110AC led's out there , it would be a simple matter to
>> run a DC inverter to make 110ac voltage ,  I wonder if there would be any
>> advantage to that,  there might be some better quality led's that are made
>> for AC voltage, Any thoughts on that?
>>
>> Brian
>>
>>
>>
>> --- personal_submersibles at psubs.org wrote:
>>
>> From: hank pronk via Personal_Submersibles <
>> personal_submersibles at psubs.org>
>> To: Personal Submersibles General Discussion <
>> personal_submersibles at psubs.org>
>> Subject: [PSUBS-MAILIST] (no subject)
>> Date: Sat, 7 Mar 2020 16:30:26 +0000 (UTC)
>>
>>                             15:13 Now playing Watch later Watch later Add
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>>
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>>
>> In this video I am converting an everyday LED light bar into the deep
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>>
>>
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