[PSUBS-MAILIST] 12 Volt Charging Plug help

[Ken Martindale]

Probably safe, do you have any forced ventilation?

 

The AGM are excellent batteries but they do have a very small evolution of gases on charge as well as discharge.

 

Good luck,

 

Ken

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of swaters
Sent: Monday, March 10, 2014 3:42 PM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] 12 Volt Charging Plug help

 

Good to be aware of. I am using AGM batteries. The vent hole is the one spec in the Kitteredge blue prints. It is hydrogen gas that is the danger right? This gas is lighter than air and will go out of the vent hole on the top of the pod right? The charging will be done on the surface with the hatch open. That should be good enough right? Never hurts to double check that I am being safe.

Thanks,

Scott Waters

 

 

 

 

Sent from my U.S. Cellular© Smartphone


Ken Martindale <wmartindale at cfl.rr.com> wrote:

Gotta tell this story.

 

We designed and built a 900 watt undersea light with a series of wet Ni-cads. You had to take the case apart for charging so there was plenty of ventilation.

 

Got a call from the customer about a year later saying the unit had exploded with no personal injuries at 112 feet. Turns out the customer had installed a waterproof connector for charging the light

without taking the case apart. He had used it several times before, the gasses built up and it ignited at 112 feet. After this the case was taken apart during charging

And no more problems.

 

Moral to the story: Make sure you have plenty of ventilation when charging wet (flooded) cells as well as no spark sources in the battery pods.

 

Ken Martindale

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of swaters
Sent: Monday, March 10, 2014 3:21 PM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] 12 Volt Charging Plug help

 

I never thought of regular AC plugs. To easy! Haha

The batterys will vent out of the same hole the charging cords come out of. 

Thanks,

Scott Waters

 

 

 

 

Sent from my U.S. Cellular© Smartphone


"kocpnt tds.net" <kocpnt at tds.net> wrote:

Hi Scott,

 

I just used two terminals from a 30 amp. 220 volt plug and wired one plug to the charger. I'm assuming that the plugs will be inside the Sub however. How will you vent the pods?

 

Best Regards,

 

Jim K 

 

On Mon, Mar 10, 2014 at 10:58 AM, <swaters at waters-ks.com> wrote:

Hey guys. I am trying to prep my sub for the West Virginia trip. One of the things on my list is to make it so I can charge the batteries without opening the pods. The connection to the pods is a XXL pipe with a cap and the opening is 1.10". I would like to hook up each battery (positive and negative) wire and some form of plug. This plug would need to be a male and female with two prongs (positive and negative for each 12V battery). One plug on the battery wire side which would fit in the 1.10" hole and the other plug on the charger side rather the alligator clips. I have seen plugs like this on golf carts and floor cleaning machines. Any idea where to get them? They need to be able to handle 20amps

Thanks,

Scott Waters


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