[PSUBS-MAILIST] (no subject)
Alan via Personal_Submersibles
personal_submersibles at psubs.org
Sun Mar 8 17:23:00 EDT 2020
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 to queue Add to queue
>>
>>
>> How To Make An Underwater Submarine LED Light Bar
>> In this video I am converting an everyday LED light bar into the deep diving, oil filled, underwater light bar t...
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>>
>>
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