[PSUBS-MAILIST] Air comp battery compartment

[Alan via Personal_Submersibles]

AGMs are hard to compensate because they need 1-6psi internal
pressure to re-absorb their gasses. 
I had them in my ambient & used two one way 3psi cracking pressure
valves ( one letting air in, one letting pressure out) to maintain at least
3psi inside their housing.
I also used pure silicone oil to limit the volume of air needed. Cheap 
Scented silicone oil caused them to off gas. BTW they lasted for years.
Alan


> On 26/05/2019, at 11:34 PM, Jon Wallace via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> This was my understanding also, that AGMs don't vent under use.  Charging, yes, but the box could be opened or vented during charging.  I wouldn't be using regular wet-cell in this application.
> 
> Hank, if the enclosure is designed to have limited tolerance to the dimensions of the batteries the air volume would be within reason I think.  I suspect .25 cu ft or less.
> 
> 
> From: Brian Cox via Personal_Submersibles <personal_submersibles at psubs.org>
> To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
> Sent: Saturday, May 25, 2019 10:18 PM
> Subject: Re: [PSUBS-MAILIST] Air comp battery compartment
> 
> If you could use AGM batteries there would not be the explosion issue.
> 
> Brian
> 
> 
> 
> _______________________________________________
> Personal_Submersibles mailing list
> Personal_Submersibles at psubs.org
> http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.whoweb.com/pipermail/personal_submersibles/attachments/20190527/18e4b566/attachment.html>