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PostPosted: Mon Aug 13, 2012 5:39 pm 
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Most of you may know this, or don't know it, or don't care, but when the DeWalt Nano-Phosphate batteries first came out, they used A123 Technology cells in their 36v, 28v and 18v packs. Now, its seems, they have gotten rid of this and gone for the inferior Samsung IFR technology.


This is is disappointing.

The A123 "M1" Cell is a magnicent cell. These Samsung 18650 cells are a joke by comparison.


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PostPosted: Mon Aug 13, 2012 6:12 pm 
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Hey, change your name tag don't copy mine

DWD


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PostPosted: Mon Aug 13, 2012 6:46 pm 
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I didn't copy yours, didn't even know of yours. :dunno:


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PostPosted: Mon Aug 13, 2012 7:03 pm 
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It's not a problem just a big coincedence!!

Hopefully UHM is changing your username very soon :wink:

Cheers for that :thumbright:

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PostPosted: Mon Aug 13, 2012 7:31 pm 
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Done and dusted.

Anyone here know about A123 technology or what they are putting in our power tool batteries?

I come here by a very circuitous route.

Originally, back in the day {2006}, electric bike enthusiasts were raiding the DeWalt packs to take the batteries out of them to make electric bike packs.

Now I am buying A123 batteries direct from China to put into the DeWalt packs, because I can do it for half the price of a new one, and the battery is every bit as good as a new one.

But it gets even worse/better...because apparently now DeWalt are using Samsungs shitty IFR 18650's in the newest version 28v and 36v DeWalt Li-Ion batteries. This is a nonsense. For one, the batteries are lower capacity, which means you need to connect more of them together just to get the same capacity, this means there is more to go wrong, it increases production costs AND it still comes out 100mAh or so less. :cussing:

Secondly, the Samsung IFR have around HALF of the life-cycle of the original A123 "M1" cell.

So we are getting double screwed over on this.

Thanks for nothing DeWalt. :tool:


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PostPosted: Mon Aug 13, 2012 7:36 pm 
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:dunno: Have not got a clue on DW cells....

Though I did skim read How to win friends and influence people Which I would recommend you read before calling respected members of this forum a "Tool"....

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PostPosted: Mon Aug 13, 2012 7:49 pm 
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Wine O if you reread the post I don't think it was aimed at DWD but at DeWalt

Deep breaths all round people let's be nice to the new member :roll:

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PostPosted: Mon Aug 13, 2012 7:51 pm 
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Aaaaah my Huge mistake.... :oops: :oops: :oops:

with apologies to mr.Mitty.... :hiding:

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For this message the author wine~o has received gratitude : moderator6
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PostPosted: Mon Aug 13, 2012 7:54 pm 
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Yeah no problem no harm done, forget about it.

I got into DeWalt by an accident, as a kid, the old man used to blab on about how B&D=Bad and Hitachi/Makita = GODS of Cordless.

DeWalt got my attention because of the battery chemistry, which I knew about from E.V applications.

But now they have changed it and this leaves me well annoyed.


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PostPosted: Mon Aug 13, 2012 8:19 pm 
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are we talking nmh nicad or li-ion :dunno:

are you us or uk based :dunno:

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PostPosted: Mon Aug 13, 2012 8:21 pm 
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big-all wrote:
are we talking nmh nicad or li-ion :dunno:

are you us or uk based :dunno:



Predominantly Li-Ion.

I am in London, but I am from Ireland originally.


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PostPosted: Mon Aug 13, 2012 8:24 pm 
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A123 is Li-Ion.

I don't know who sold the NiMh or Ni-Cad cells to DeWalt, but its old hat now anyways.


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PostPosted: Mon Aug 13, 2012 8:45 pm 
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yes i understand about batteries quite well :lol:

i have 7 2ah nicads 5 jap and 3 mexico 3 nmh same source no mention off place off manufacture seperately

any way the point i am making is perhaps the internal batteries depend on source country :dunno:

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PostPosted: Mon Aug 13, 2012 9:09 pm 
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big-all wrote:
yes i understand about batteries quite well :lol:

i have 7 2ah nicads 5 jap and 3 mexico 3 nmh same source no mention off place off manufacture seperately

any way the point i am making is perhaps the internal batteries depend on source country :dunno:


With the Lithium Ion, here is what happened.

1. In 1996, a scientist called Prof Goodenough {yes, that was his name!} discovered Lithium Iron Phosphate.

2. In the 2000's a bunch of kids in M.I.T develop nano phosphate cells using his LiFePo4 technology.

3. They form A123 Systems which gets hundreds of millions of dollars in funding, on the understanding that they would make jobs.

4. Instead of making jobs, they run off to China and pay them nothing to make the cells which A123 then sells for a massive profit.

5. A123 gambles on getting the contract for the Chevy Volt. Contract goes to somebody else.

6. Market is flooded with A123 batteries from all over the place, some cells are junk, others are very very good.

7. Dewalt then dumps A123 and goes with Samsung.

8. I get really angry when I hear this lol.


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PostPosted: Mon Aug 13, 2012 9:16 pm 
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why not try and find someone with old stock but not to old as batteries deteriate with age wether used or not

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