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Author Topic: Dewalt Battery Recycled  (Read 14840 times)

HumeMan

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Dewalt Battery Recycled
« on: March 13, 2010, 08:12:32 AM »

After reading an article in last months Back Home Magazine about re-using dead drill batteries, I decided to try it for myself.  Cordless drills are the great, but if you are unable to recharge them due to a loss of power or you are too far from an electrical outlet, you're out of luck.

Taking a junk battery that no longer works, I've given it a cord, perfect for attaching to your 4wheeler or car battery.


This battery no longer works.  It's worn out and can't hold a charge.



Start by removing the 6 screws that hold the case together.



The case comes apart with minimal prying.



Take a pair of dykes and cut the Capacitor off of the batteries.



I left the sensor alone.  I don't know what removing it will do.



Drill a hole in the rear of the case, large enough for the cord to fit through.



For the cord I used 25' of 12 gauge 2 conductor leftover from work.  
You could also use and old extension cord or an old vacuum cord.  
Due to voltage drop, I don't recommend using anything longer than 25'.



Make sure to do a good job soldering the cord.  Once this is assembled, there's no repairing it.



I taped the entire assembly together to prevent the cord from moving and snapping.



Insert the assembly back into the case.  Make sure it sits flush.  
If not, the terminals won't make a good connection in the drill.



Stand the case face down and support it well.  It's going to sit in place for the next 24 hours.



Before sliding the cord through the hole in the case, tie a knot in it.  
This will prevent the cord from putting to much stress on the assembly.



To prevent the assembly from falling down into the case, we need to hold it in place with epoxy.  
I used almost the whole tube filling in around the assembly.



Make sure BEFORE soldering the clamps onto the cord end that you slide the rubber handles down the cord first.  
I got ahead of myself and soldered the clamps first.  :-/



The Finished Project!

http://www.youtube.com/watch?v=SVyZRBgbBJQ&feature=player_embedded#
« Last Edit: March 26, 2010, 04:12:31 PM by ModernSurvival »

Hare of Caerbannog

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Re: Dewalt Battery Recycled
« Reply #1 on: March 13, 2010, 08:53:38 AM »
Good Job!
+1 from me!
I'm recommending this for the SOS thread.

Offline Darkwinter

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Re: Dewalt Battery Recycled
« Reply #2 on: March 13, 2010, 11:30:57 AM »
Another +1 from me!!  Thank you so much for sharing this!
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Offline CGFxColoneill

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Re: Dewalt Battery Recycled
« Reply #3 on: March 13, 2010, 09:15:22 PM »
thats a cool idea
dont know that I woulda thought of that one
Maybe somebody should've labelled the future "some assembly required".
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Offline SNOWman

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Re: Dewalt Battery Recycled
« Reply #4 on: March 17, 2010, 05:39:58 PM »
nice job! im gonna have to try it. ;D
You can wish in one hand, and crap in the other....and see which one fills first :P

Offline idelphic

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Re: Dewalt Battery Recycled
« Reply #5 on: March 17, 2010, 05:56:56 PM »
I have done this with a Black and Decker drill.  However, I used a Molex connector in the case instead.  This way I can use any type length of cord.
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homeshow

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Re: Dewalt Battery Recycled
« Reply #6 on: March 17, 2010, 06:36:34 PM »
wont runnig a 18v tool on 12v (underpowered) wear it out sooner?

Offline idelphic

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Re: Dewalt Battery Recycled
« Reply #7 on: March 17, 2010, 08:27:09 PM »
Oops,.. Didn't see the 18v before. The drive I converted was a 12v drill.

On 18v models, you might need to have a DC to DC converter.
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Offline Glockman1980

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Re: Dewalt Battery Recycled
« Reply #8 on: March 17, 2010, 08:56:31 PM »
I work for Interstate Batteries and we rebuild cordless drill packs.  Far an 18v dewalt or similar pack that can be disassembled, it is $45.  I think most Interstate distributors rebuild these.  This IS a great way to make a cordless drill into a corded one tho! 

Offline joeinwv

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Re: Dewalt Battery Recycled
« Reply #9 on: March 17, 2010, 09:08:11 PM »
drawing from my RC car habit in younger days, it would not be hard to rebuild that battery pack - esp since the dewalt case comes apart

this is a nice idea that opens up a lot of battery possibilities

Offline bartsdad

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Re: Dewalt Battery Recycled
« Reply #10 on: March 18, 2010, 01:57:40 AM »
Oops,.. Didn't see the 18v before. The drive I converted was a 12v drill.

On 18v models, you might need to have a DC to DC converter.

They work just fine on 12 volts.You do lose a bit of power, but it really is negligible with the added reserves.
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Mental Avenger

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Re: Dewalt Battery Recycled
« Reply #11 on: March 18, 2010, 03:45:51 AM »
The cells in rechargeable battery packs are 1 ½ volts each.  Notice that there are 12 cells in the 18 volt battery pack.  It is possible that only one of the cells is defective.  Rechargeable battery packs are often on sale cheap, and the cells in them are usually similar or identical, regardless of what the pack was for. 

I disassemble those packs and use the cells in whatever needs new batteries.  The other day I took apart a NOS cordless phone battery pack and used the cells to replace the defective cells in my Norelco razor.  The razor now fully recharges and the batteries work like new.  Those cordless phone packs were on blowout at Wal-Mart for about 50 cents a pack several years ago.

Mental Avenger

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Re: Dewalt Battery Recycled
« Reply #12 on: March 18, 2010, 09:22:06 AM »
Rechargeable Battery Packs




Deleted image link removed to clean up post.
« Last Edit: July 18, 2010, 09:46:14 PM by bartsdad »

Offline TwoBluesMama

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Re: Dewalt Battery Recycled
« Reply #13 on: March 18, 2010, 06:25:00 PM »
+1 HumeMan - DH & I loved this idea! TBM
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DEV being nice... sorta goes along with GOATS howling, babies bursting into tears, birds suddenly becoming silent, and an ominous greenish lighting spreading across the landscape...

Offline Bobo

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Re: Dewalt Battery Recycled
« Reply #14 on: July 18, 2010, 01:05:23 PM »
As another option... you could use 3 golf cart batteries to get your 18VDC
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Offline millwright

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Re: Dewalt Battery Recycled
« Reply #15 on: July 18, 2010, 09:31:04 PM »
What is the best source for 1.5v cells? I have 15 or more  dead 18v packs and 10 or more 14v packs. Is there any compatibilty issues with DeWalt chargers?
I also need a source for parts (clutches, gears, etc), my dead Dewalt box is pretty full of drills & sawzalls. I can honestly say they died of fair-wear & tear and will continue to buy DeWalt.
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Offline nutprep

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Re: Dewalt Battery Recycled
« Reply #16 on: July 19, 2010, 04:43:45 AM »
This was excellent.

homeshow

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Re: Dewalt Battery Recycled
« Reply #17 on: July 23, 2010, 02:19:48 PM »
What is the best source for 1.5v cells? I have 15 or more  dead 18v packs and 10 or more 14v packs. Is there any compatibilty issues with DeWalt chargers?
I also need a source for parts (clutches, gears, etc), my dead Dewalt box is pretty full of drills & sawzalls. I can honestly say they died of fair-wear & tear and will continue to buy DeWalt.


mine on the other hand die of massive abuse ;)

Offline texasmufflerman

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Re: Dewalt Battery Recycled
« Reply #18 on: July 23, 2010, 07:14:04 PM »
The cells in rechargeable battery packs are 1 ½ volts each.  Notice that there are 12 cells in the 18 volt battery pack. 

15 1.2 volt cells in a 18 volt pack

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Re: Dewalt Battery Recycled
« Reply #19 on: July 24, 2010, 06:28:34 AM »
Cool Mod Humeman!

I hate loosing expensive drills just because their expensive batteries die. 

Offline Dirk Pitt

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Re: Dewalt Battery Recycled
« Reply #20 on: July 27, 2010, 11:09:12 AM »
Will using a 12V battery in a 18v drill gun cause the drill damage over time?

Offline Bobo

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Re: Dewalt Battery Recycled
« Reply #21 on: August 01, 2010, 01:33:50 PM »
Dirk,

I'm almost positive it will.

Because the voltage is lower (12V vs 18V). The current will be around 50% higher to compensate for the lower voltage because the power requirement of the drill is the same. (Voltage x Current = Power). If the stator coils in the drill are not over sized for this higher current, they will develop higher losses to heat and have a shortened lifespan.
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Offline slingblade

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Re: Dewalt Battery Recycled
« Reply #22 on: August 01, 2010, 07:09:39 PM »
Dirk,

I'm almost positive it will.

Because the voltage is lower (12V vs 18V). The current will be around 50% higher to compensate for the lower voltage because the power requirement of the drill is the same. (Voltage x Current = Power). If the stator coils in the drill are not over sized for this higher current, they will develop higher losses to heat and have a shortened lifespan.

Isn't this what happens when the 18V pack starts to go dead? 

Offline Bobo

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Re: Dewalt Battery Recycled
« Reply #23 on: August 01, 2010, 07:22:59 PM »
when an 18V battery pack starts to go dead... you simply start to loose power. If you use a 12V source for an 18V load for long periods of time, the drill will simply stop working at some point instead of just getting weaker faster.
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Offline millwright

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Re: Dewalt Battery Recycled
« Reply #24 on: August 13, 2010, 10:36:08 PM »
What I've seen is dead packs just loose run-time. They also show "full charge" faster.
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Offline CdnGuy

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Re: Dewalt Battery Recycled
« Reply #25 on: January 28, 2011, 11:51:17 AM »
Dirk,

I'm almost positive it will.

Because the voltage is lower (12V vs 18V). The current will be around 50% higher to compensate for the lower voltage because the power requirement of the drill is the same. (Voltage x Current = Power). If the stator coils in the drill are not over sized for this higher current, they will develop higher losses to heat and have a shortened lifespan.

You'll probably know this better than I would, but wouldn't the capacitor help in regulating the current? Nonetheless, it's just as easy to put a 12v to 18v DC to DC converter in between the cable and the capacitor to keep the specs the same as with the battery pack.Should be able to get those from DigiKey or someone like that. They're pretty easy to solder in.
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nkawtg

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Re: Dewalt Battery Recycled
« Reply #26 on: January 28, 2011, 03:03:01 PM »
What a great idea for a bug out or SHTF scenario.
+1 from me...

Offline felipe

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Dewalt Battery Recycled
« Reply #27 on: September 20, 2012, 11:04:26 PM »
The DeWalt 14.4-volt battery is one of a large range of batteries designed for that company's line of more than 200 cordless power tools. It is made from 12 nickel cadmium  cells, each producing 1.2 volts to enable the battery to produce 14.4 volts once wired in.

.................................................................................................

dewalt 14.4 battery