Charging 24v battery bank with 12vg

[Sunking]

SK: Since you're the one who broached the flatulence barrier in this thread, and as a retired Dolphin, maybe you can enlighten me. What happens or how long does a fart stay in a submarine ? Length of the cruise ?.[/FONT]

A fart smells better than amine. Truth be told a fart only last a few seconds, but constant with 130 men crammed in a small space. Air scrubbers and ventilation whisk away the methane, CO2, and hydrogen, but nothing takes away the Amine odor. Today I do not think Amine is used in many subs anymore to scrub away CO2.

Now the real question is what happens when you pass the equator or some bonehead does not have the latrine valves set properly and you change depth and what comes gushing out of the head. As a right of passage over the Equator, even officers, have to eat a M&M candy from a fat greased up cross-dressed sailors belly button. I will not tell you what we made SEALS do when they come on board to earn their Whack Shack.

[J.P.M.]

A fart smells better than amine. Truth be told a fart only last a few seconds, but constant with 130 men crammed in a small space. Air scrubbers and ventilation whisk away the methane, CO2, and hydrogen, but nothing takes away the Amine odor. Today I do not think Amine is used in many subs anymore to scrub away CO2.

Now the real question is what happens when you pass the equator or some bonehead does not have the latrine valves set properly and you change depth and what comes gushing out of the head. As a right of passage over the Equator, even officers, have to eat a M&M candy from a fat greased up cross-dressed sailors belly button. I will not tell you what we made SEALS do when they come on board to earn their Whack Shack.

Thank you. RUA.

I've heard stories from retired Dolphin friends including tales related to equator crossing virgins.

Don't know how you ever survived the political incorrectness. Oh, the humanity. !

[Sunking]

Don't know how you ever survived the political incorrectness. Oh, the humanity. !

I think you got it wrong, There is no discrimination on a sub, we are equal opportunity offenders. Rank has no privileges on matters of passage, even the Skipper and XO walk the gauntlet. Look up a slang term used on U boats called "Boy Butter".

[J.P.M.]

I think you got it wrong, There is no discrimination on a sub, we are equal opportunity offenders. Rank has no privileges on matters of passage, even the Skipper and XO walk the gauntlet. Look up a slang term used on U boats called "Boy Butter".

Well, and meant in a genuine and non humorous way, maybe I'm wrong, but it seems to me there is, at least in a positive sense/usage of the word. You get to choose and be discriminate to some degree to choose the e situation you serve in and in whose hands and actions you choose to trust with your life in ways most folks are clueless about.

Most Respectfully,

J.P.M.

[Chris1]

Doubled down on AGM. Typically AGM batteries require much higher charge rates which is still directly related to panel wattage. Use a good oure lead AGM like Concord or Odyssey require C/4 to C/2 charge rates You need that high rate to make them recombine O2 and H back to water.

So what's the benefit of a high quality battery like the Concorde AGM over the cheaper Brand X? Lower DOD without sulfation? More charge cycles?

[Sunking]

So what's the benefit of a high quality battery like the Concorde AGM over the cheaper Brand X? Lower DOD without sulfation? More charge cycles?

Many more cycles, and performance. Most battery manufactures of AGM batteries use recycled lead and alloys.

[Chris1]

Many more cycles, and performance. Most battery manufactures of AGM batteries use recycled lead and alloys.

Okay, thanks. If I'm going to pay a 30% premium I want to think I'm getting something in return.

[Sunking]

OK the main player in AGM is Concorde, but not the Military and Aircraft product lines. They make Sun Xtender (RE), Chairman (Motive), and Lifeline (RV & Marine). Another one with limited battery selection is Odyssey. Optima is like Odyssey in that they tailor to the Motor Sports and Utility Vehicle markets. Optima realy is not much of a player because of the small sizes offered only in BCI automotive case sizes. Odyssey at least make a few models large enough to be useful in small solar applications like an RV where you need a smaller battery with BIG PUNCH..

Best of the best is Concorde Sun Xtender line up.

[littleharbor]

Fullriver has a full line of AGM Deep Cycle batteries. I've had real good performance from them.

[jflorey2]

This may be a stupid question but here goes - Can a 24v battery bank (two 12v, 100Ah AGM batteries) be charged with a 12v solar controller?

To answer your question directly - yes, there are boost converters that will boost a panel's 18 volt output to the ~28 volts or so needed to charge a 24V battery bank. And will do MPPT and everything. Can't post links here so google "boost MPPT controller."

[Sunking]

Can't post links here so google "boost MPPT controller."

You cannot post links, but I can. Genasun makes them and Marine rated. Their market is golf carts with these and at 24 volts limited to 200 watts input maximum.

As always if given a choice you go from higher to lower voltage. You have a choice.

[Chris1]

To answer your question directly - yes, there are boost converters that will boost a panel's 18 volt output to the ~28 volts or so needed to charge a 24V battery bank. And will do MPPT and everything. Can't post links here so google "boost MPPT controller."

That answers my question exactly. I don't think I've ever seen that done on an internet forum. Thanks! Sunking has inspired a new line of thinking though and now I think I'll put all my eggs into a shore based charging station.

[Chris1]

OK the main player in AGM is Concorde, but not the Military and Aircraft product lines. They make Sun Xtender (RE), Chairman (Motive), and Lifeline (RV & Marine). Another one with limited battery selection is Odyssey. Optima is like Odyssey in that they tailor to the Motor Sports and Utility Vehicle markets. Optima realy is not much of a player because of the small sizes offered only in BCI automotive case sizes. Odyssey at least make a few models large enough to be useful in small solar applications like an RV where you need a smaller battery with BIG PUNCH..

Best of the best is Concorde Sun Xtender line up.

The Concorde Sun Xtender is definitely on the top of my list. From a neophyte's perspective the Vmax AGM solar batteries look okay too. Any opinion on those?

[Mike90250]

...... Can't post links here so google "boost MPPT controller."

you can, but only one, more than that, and the post goes to moderation as suspected spam

[jflorey2]

you can, but only one, more than that, and the post goes to moderation as suspected spam

OK, thanks. I will try that next time.