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Old Jan 26, 2012, 11:31 PM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
Joined Mar 2005
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Deep Cycle batteries for charging

I need some help picking the best deep cycle batteries for charging. I currently own 2 306b chargers and plan to charge a lot of 6S5000 lipos at the field.

I found a ton of info here

http://www.windsun.com/Batteries/Battery_FAQ.htm

Opinions?
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Old Jan 26, 2012, 11:51 PM
Expo/DualRates = Lack of Skill
typeRA's Avatar
San Diego, CA
Joined Mar 2009
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You can also use LiFePO4 cells.

Four cells for approximately 12V, eight cells for approximately 24V.

They are a lot lighter and are supposedly good for more cycles.
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Old Jan 26, 2012, 11:53 PM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
Joined Mar 2005
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more info that other people have said....

"make sure that they are Deep Cycle batteries, not Starting Batteries. DCs are rated in amp/hrs and SBs are rated in CCA (cold cranking amps). Walmart marine Maxx 125ah"


"I would recommend minimum 125Ah, group 29 or larger. While more expensive, I would recommend a true deep cycle over a marine starter or dual purpose battery as they will last a LOT longer. True deep cycles are available at most boating or RV supply stores"


"Starting batteries should not be discharged below 80 percent of full charge.
Deep cycle batteries should not be discharged below 50 percent of full charge.
After a battery is discharged it should be FULLY Recharged ASAP, the longer it is left discharged the more damage is done."

"Fully charge with a good Automatic or Smart charger. Every onboard charger I have seen is a good smart charger. Do not charge with a trickle charger unless your have the tool and the attention to shut it off at the proper time."

"I also suggest a Smart charger of at least 10 amps to help the battery recover quickly. If your charging 2 batteries then 10 amps per battery.

Many will say use a low amp charger as high amps will damage the deep cycle. I say just the oppsite as long as the charger is a smart charger the more amps the better. Charger will taper down and not over charge the battery."
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Last edited by marksextra; Jan 27, 2012 at 12:32 AM.
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Old Jan 26, 2012, 11:56 PM
Expo/DualRates = Lack of Skill
typeRA's Avatar
San Diego, CA
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Quote:
Originally Posted by marksextra View Post
Starting batteries should not be discharged below 80 percent of full charge.
Deep cycle batteries should not be discharged below 50 percent of full charge.
I think you have it backwards.

--edit--

...unless you are talking about 20% DOD and 50% DOD.
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Old Jan 26, 2012, 11:57 PM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
Joined Mar 2005
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Walmat Everstart Maxx 29 has both good and not so good reviews for a cheap alternative.
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Old Jan 26, 2012, 11:59 PM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
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Originally Posted by typeRA View Post
I think you have it backwards.
It wasn't me. It was just what someone else said. I don't know much about these....yet. But it depends on how you look at it. As you said. Deep cycle batteries are for their ability to be discharged more deeply and recharged more than starting batteries where their strong ability is just for the short duration of starting. I am wrong?

everydayflyer? mrforsyth?
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Old Jan 27, 2012, 12:04 AM
Expo/DualRates = Lack of Skill
typeRA's Avatar
San Diego, CA
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Discharging of batteries should be referenced by stating the DOD, or Depth Of Discharge, as a percentage of the battery's total capacity discharged.

I think what you said may have meant 80% remaining (20% DOD), and 50% remaining (50% DOD).
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Old Jan 27, 2012, 12:05 AM
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I believe that may be Charles quote and it's correct.

For longest life, starting batteries should not be discharged below 80% of available capacity (20% DOD). For deep cycles, 50% is the recommended stopping point for maximum longevity.

Mark
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Old Jan 27, 2012, 12:15 AM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
Joined Mar 2005
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Thanks for posting. That was fast!


much better looking battery...but hey. I don't know anything about this stuff.

http://www.theenergyconscious.com/sol3002.html

I'm getting the feeling that it going to cost me about $100 per 100ah of battery and doesn't matter where I buy it.
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Old Jan 27, 2012, 12:17 AM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
Joined Mar 2005
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Anyone care to recommend a good smart charger?

I think someone mentioned this one.

http://www.amazon.com/Schumacher-SEM.../dp/B0009IBJAS

BUT....it's 1.5amps. The poster above said to get a 10amp one.
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Old Jan 27, 2012, 12:17 AM
Expo/DualRates = Lack of Skill
typeRA's Avatar
San Diego, CA
Joined Mar 2009
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http://www.theenergyconscious.com/sol3002.html

115 lbs?
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Old Jan 27, 2012, 12:24 AM
Expo/DualRates = Lack of Skill
typeRA's Avatar
San Diego, CA
Joined Mar 2009
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Quote:
Originally Posted by marksextra View Post
I also suggest a Smart charger of at least 10 amps to help the battery recover quickly. If your charging 2 batteries then 10 amps per battery.

Many will say use a low amp charger as high amps will damage the deep cycle. I say just the oppsite as long as the charger is a smart charger the more amps the better. Charger will taper down and not over charge the battery.
Quote:
Originally Posted by marksextra View Post
The poster above said to get a 10amp one.


Are you just copying stuff from all over the internet and posting it here without any references of such activity?
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Old Jan 27, 2012, 12:25 AM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
Joined Mar 2005
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Originally Posted by typeRA View Post
I"m young and strong? Oh wait.....no I"m not.

I do have an enclosed airplane trailer that I haul my stuff around in though. Weight shouldn't be an issue. Of course I say that now. Wait till I'm swearing up a storm because I have to clear out the trailer to haul something else.
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Old Jan 27, 2012, 12:26 AM
Once u go yak u never go back
marksextra's Avatar
Erie, PA
Joined Mar 2005
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Quote:
Originally Posted by typeRA View Post


Are you just copying stuff from all over the internet and posting it here without any references of such activity?
Ummm... I think so. I'm copying what others have said regarding deep cycles. There I just referenced my activity. Is that better?

Are you talking about copyright? or batteries?
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Old Jan 27, 2012, 12:35 AM
Expo/DualRates = Lack of Skill
typeRA's Avatar
San Diego, CA
Joined Mar 2009
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It's confusing and difficult to keep track of information. It would be a lot nicer if you posted quotes inside quote tags and posted a link to where you found the quoted material.

Here is an example:

http://www.theenergyconscious.com/sol3002.html

Quote:
Clean, durable and long-lasting, renewable energy users all over the globe know Trojan Deep Cycle batteries are the perfect addition to any solar/photovoltaic, small wind, and micro-hydro application, even in the harshest of environments. Trojan Battery - Dependable, Uninterrupted Power.
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