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 AA Battery Charging
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49er
Administrator


USA
4426 Posts

Posted - January 21 2012 :  17:56:12  Show Profile Send 49er a Private Message  Reply with Quote
Hi All

This a video I have wanted to make for a long time so that every one could have faith in the SS or Pulse chargers that we use here. Do this at your own risk. This has many safety issues for those who care about that sort of thing. Be safe and put your batteries in a box they have been known to blow up, but never on me. LOL

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Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
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iaec
Forum Admin



1033 Posts

Posted - January 21 2012 :  21:06:46  Show Profile Send iaec a Private Message  Reply with Quote
Hi 49er,
Thats one nice tiny solid state ssg you got there...charge nice for what i can see and none of them bateries have popped.lol

TimberJack

***Possibilities Within The Impossible***

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49er
Administrator



USA
4426 Posts

Posted - January 21 2012 :  21:20:31  Show Profile Send 49er a Private Message  Reply with Quote
Hi TJ

Right now I am trying 9 volts 5 at a time LOL I just can't get above 49.8 volts O-well. What is that old saying if first you don't succeed try try again

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
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Kudzu
Administrator



USA
1619 Posts

Posted - January 21 2012 :  23:39:01  Show Profile Send Kudzu a Private Message  Reply with Quote
Hey 49er, I enjoyed the video.. I've been saving my kid's battery's lately ... They have some toy's that eat em .. lol .. Anyway I'm looking forward to more on this ... Thank's

==================================================

I still think the only dumb questions are the one's you didn't ask ...
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49er
Administrator



USA
4426 Posts

Posted - January 22 2012 :  09:18:03  Show Profile Send 49er a Private Message  Reply with Quote
Hi K

The best buy I have found is HF nicd they have on sale all the time 2.99 for a 4 PK and you can charge them with a SS like I built and you can do it now!!!!LOL My next video will be on NiCd.

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
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fan1701
Average Member



USA
243 Posts

Posted - January 22 2012 :  16:59:45  Show Profile Send fan1701 a Private Message  Reply with Quote
Hi 49er. I did a dry run of the fanSSG video charging aa batts. I will try to have something complete tomorrow. Would you like it posted here or somewhere else?

al

* Not following the manufacturer recommended specs * ON PURPOSE!
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49er
Administrator



USA
4426 Posts

Posted - January 22 2012 :  18:16:14  Show Profile Send 49er a Private Message  Reply with Quote
Hi fan

I would like to keep it all together by battery type 3a and 2a all the same so here and Thanks

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
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iaec
Forum Admin



1033 Posts

Posted - January 23 2012 :  04:26:02  Show Profile Send iaec a Private Message  Reply with Quote
Hi 49er, what you wrote is the way to go "if first you don't succeed try try again" :)

TimberJack

***Possibilities Within The Impossible***

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49er
Administrator



USA
4426 Posts

Posted - January 23 2012 :  08:16:19  Show Profile Send 49er a Private Message  Reply with Quote
Hi TJ

I should have added or until you run out of money

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
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iaec
Forum Admin



1033 Posts

Posted - January 23 2012 :  12:28:56  Show Profile Send iaec a Private Message  Reply with Quote
LOL, "until you run out of money"...that would be a problem now wouldnt it ;-)))

TimberJack

***Possibilities Within The Impossible***

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49er
Administrator



USA
4426 Posts

Posted - January 23 2012 :  12:43:34  Show Profile Send 49er a Private Message  Reply with Quote
Hi All

Just an update, charge 8 more AA alkaline and it took about 4 1/2 to 5 hrs and charged to 13.56 volts at 55 MA and no popping. 7 out of the 8 batteries were charged to 1.5+ volts and the one that didn't charge is back in another bank on charge now and will be done alter today.

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
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fan1701
Average Member



USA
243 Posts

Posted - January 23 2012 :  14:07:03  Show Profile Send fan1701 a Private Message  Reply with Quote
Here is a video of a Bedini fan SSG charging four AA batteries. Blast! I forgot to show an amp meter.



al

* Not following the manufacturer recommended specs * ON PURPOSE!
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49er
Administrator



USA
4426 Posts

Posted - January 23 2012 :  15:46:40  Show Profile Send 49er a Private Message  Reply with Quote
Hi fan

That is a very good video, great info about the fan and the batteries. I found out what the max voltage is to pop one 1.75 volts and you stopped at 1.65 I think so your at what I would say is a max voltage. good deal and thanks

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
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fan1701
Average Member



USA
243 Posts

Posted - January 23 2012 :  16:12:02  Show Profile Send fan1701 a Private Message  Reply with Quote
Thank you. I think I said "uh" about two hundred times. LOL. I should have rehearsed a little more. I only made one practice run. The batteries needed to be de-tuned a little more and allowed to just hold them there. But they are testing good and would power whatever now.

al

* Not following the manufacturer recommended specs * ON PURPOSE!
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49er
Administrator



USA
4426 Posts

Posted - January 23 2012 :  19:46:55  Show Profile Send 49er a Private Message  Reply with Quote
Hi fan

Looks like you are a celebrity, I just charged another pack of AA's and had one pop at 13.25 volts I am thinking I need to get them a little more even in starting voltage. I have a 20# bag of old batteries to chose from, and I will not start a charge on one that has a -0- volts just toss it.

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
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49er
Administrator



USA
4426 Posts

Posted - January 28 2012 :  12:20:37  Show Profile Send 49er a Private Message  Reply with Quote
Hi All

Just a up date I have charged about 100 AAA batteries all to 13.25 volts and as long as you group them together in the 8 packs you shouldn't pop them but if you have 6 at 1.25 and 2 at .6 and .8 that is where you get into trouble. I have been keeping them with in .1 of a volt and it is all good.

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
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ron_o
Moderator



United Kingdom
1052 Posts

Posted - January 28 2012 :  16:59:59  Show Profile Send ron_o a Private Message  Reply with Quote
Hi All

The site link below has a few useful circuits ... if you look at the super simple nicad charger circuit the included text indicates how to calculate current and cutoff voltages.

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ron
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49er
Administrator



USA
4426 Posts

Posted - January 28 2012 :  18:05:43  Show Profile Send 49er a Private Message  Reply with Quote
Hi Ron

I will look at that real soon for that is my next project NiCd and what I am charging up now. So thanks for the info

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
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Kudzu
Administrator



USA
1619 Posts

Posted - January 29 2012 :  02:34:43  Show Profile Send Kudzu a Private Message  Reply with Quote
Hey Fan ,
I liked the video and info , good stuff for me to learn ...
I was thinking , Do you think the one's that don't seem to take as good of a charge are the one's that land in the middle of the pack more often ?
What I'm saying is do you think the pulse that goes through to clean and charge may not make it that far in the pack , only the charge .. So if the battery's are numbered with permanent marker and rotated accordingly by a charge schedule. IDK maybe ya'll have done that already with no change ?
It was Just a thought I had and I wanted to ask you if it sounded plausible or if it was just another one of my dumb thought's .. LOL
Thank's for sharing your time and info Guy's !

Ron , Thank's for the link .. I'm bookmarking it to study when I get some more free time .

==================================================

I still think the only dumb questions are the one's you didn't ask ...
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49er
Administrator



USA
4426 Posts

Posted - January 29 2012 :  09:17:13  Show Profile Send 49er a Private Message  Reply with Quote
Hi K

This is my take on charging them I had 2 in 2 different packs pop and it was I didn't average out the pack before charge and one got to full charge before the others. Sounds obvious but if you put in one that is .65 and one .20 and the rest are 1.12 it drags the average down and the other 6 will say I AM DONE but the 2 still has the over all voltage down that makes you think I haven't reached peek voltage yet so keep on cooking. This is not what you asked but it might help. I will let fan answerer your question parse

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
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fan1701
Average Member



USA
243 Posts

Posted - January 30 2012 :  01:16:13  Show Profile Send fan1701 a Private Message  Reply with Quote
Hi Kudzu and 49er. Good points. I have noticed it is important to charge batteries that are nearly the same voltage at rest. I have also noticed that some cells do not charge the same even when they are resting at nearly the same voltage. Now position in the charge pack is a good question. Personally I have not noticed that occur BUT i wasn't looking for it and I can be a dumb head sometimes. I have charged all the AA-s I have at the moment but I will be watching this in the future. Thanks for the heads up. Its good to have all the minds around here dropping in some input.

When I see a battery struggling I usually pull it and drop in another. Some just are not going to get there. I had one group act strangely though. These four AA batteries charged very very slowly seemed to go all the way back to full power where most of mine dont make it wuite back to factory level. They were charged slower than normal and over a couple of different sessions over the period of a day or two. I charged them some one night then some another night. They did not leak and reached a higher standing voltage than the others I have charged recently and in the video. Just thought I would mention that.

Thanks for the suggestions.

* Not following the manufacturer recommended specs * ON PURPOSE!
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Kudzu
Administrator



USA
1619 Posts

Posted - January 31 2012 :  01:08:39  Show Profile Send Kudzu a Private Message  Reply with Quote
Hey 49er and Fan , I was wondering , If you have battery's that show no voltage but, are not leaking .. Wouldn't those be good to group together and see if they will charge .. I'm thinking if they don't charge then all you have is a bit of time in them mostly .. I've been checking some old battery's that have found there way to the back of some of the drawers around here and was thinking of trying em ( inside of a container of course ) and if they take a charge, I figure I'll be that much better off .. I've even dug up some old rechargeable battery's that have gotten lost around here .. I guess I have a bad habit ( according to my wife ) of tryin to save to much old junk . lol

Oh yea 49er, did you say I had to twist the wire for the coil ? Also where will the switches with resistor's be located in the circuit ?

==================================================

I still think the only dumb questions are the one's you didn't ask ...
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49er
Administrator



USA
4426 Posts

Posted - January 31 2012 :  09:25:33  Show Profile Send 49er a Private Message  Reply with Quote
Hi K and fan

I have just thrown them it a bag and have not tested then yet, I was serious about a 20# bag LOL. The wire is not twisted just because I think there are 1- possible breaking (any thing below 25 awg) 2- Lower amp draw, doesn't the lower ohmage. The batteries that are -0- all you can do is try and like fan said it should be in 2 steps, that I have tried and they do go much higher in volts. That is stilled something we need to test and report. If you get your machine built you could take on those tests.

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
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fan1701
Average Member



USA
243 Posts

Posted - January 31 2012 :  11:28:42  Show Profile Send fan1701 a Private Message  Reply with Quote
Hi Kudzu , 49er. @ Kudzu : I would try any battery that wasn't leaking. I have charged them that were pretty well flat lined. I charged some D batteries that were in an storage building and were out of date but were not leaking. They read 0 . Some of them came up and stayed while a few of them just ran back down after resting. With some more care the responsive ones may have done better. I think very slow charging on this type battery is probably best.

al

* Not following the manufacturer recommended specs * ON PURPOSE!
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49er
Administrator



USA
4426 Posts

Posted - January 31 2012 :  12:17:37  Show Profile Send 49er a Private Message  Reply with Quote
Hi K & fan

I agree with fan all the way and just so you know I am charging them at .050 amps on the input

Doug
The sky is not the limit...There are footprints on the MOON.
Your only as DUMB as where your standing.
No matter where you go there you are.
You must be logged in to see this link.
Go to Top of Page

n/a
deleted



13 Posts

Posted - February 02 2012 :  22:55:49  Show Profile Send n/a a Private Message  Reply with Quote
Excellent Video Fan1701. Excellent job. Nice looking prototypes as well. Electromechanical Sculpture!
Mork.
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fan1701
Average Member



USA
243 Posts

Posted - February 03 2012 :  12:10:32  Show Profile Send fan1701 a Private Message  Reply with Quote
Hi Mork and welcome to the IAEC. Thanks! They get used from time to time for various things. Each one taught me something. They are built in the style of Imhotep on youtube. Its a simple way to get a SSG up and running.

al

* Not following the manufacturer recommended specs * ON PURPOSE!
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