[PSUBS-MAILIST] inside battery

[hank pronk via Personal_Submersibles]

Sean,That is a great idea, I will look into that.  I like it!  The hydrogen is not eliminated, it is simply captured so to speak, in the form of a bubble on top of the oil and actually right under the fill cap .  I can leave the fill cap open when charging.   I would not even consider building battery pods again for a sub.  The cost and time to build is not worth it.  In the old days it was important maybe, because there was only one choice for batteries.   Flooding batteries is so easy and cheap and a very significant weight reducer, when faced with buying foam to support  batteries is just not cost effective.  A large shallow diving sub with a big volume may be different of coarse.  In that case I would go with AGM batteries inside.  Hank 

    On Monday, February 20, 2017 1:49 PM, Alan via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
 

 Hank,
I first used scented baby oil ( mineral oil) in my battery box because it 
was cheap from the supermarket.
The chemicals in the scent must have reacted with the
battery acid or plates & produced a bit of gas. Not excessive, but it 
stopped when I changed to pure mineral oil.
At least any hydrogen produced won't go in to the hull, & if the terminals
are covered with oil there won't be any worry about sparking.
Alan

Sent from my iPad

> On 21/02/2017, at 5:13 AM, hank pronk via Personal_Submersibles <personal_submersibles at psubs.org> wrote:
> 
> submersibles


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