Makita Power tools

[micklen]

Hi,
Bought a Makita 18v kit 3 months ago.

Yesterday did i try to charge one of the batteries that I haven't used yet and it was dead!

Contacted Tylertools and was told to contact Makita direct.

I think doesn't will do anything contact them because of that I live in Sweden and I think that the warranty is only for US.

Do anyone know if you can wake up LI on batteries with a welder like with NICAD batteries??

Or is there any other way ?

//Carl

 

[jvsteenb]

You can surely put them to sleep permanently with a welder.....
Most Li-Ion batteries contain logic that permanently monitors the state of the battery.
I can't imagine that circuitry reacting positively to a hi-current surge.
Contact the Makita importer in Sweden - there may be a way to "reset" the logic in the battery.

Regards,

Job

 

[ajones]

Hi,
Bought a Makita 18v kit 3 months ago.

Yesterday did i try to charge one of the batteries that I haven't used yet and it was dead!

Contacted Tylertools and was told to contact Makita direct.

I think doesn't will do anything contact them because of that I live in Sweden and I think that the warranty is only for US.

Do anyone know if you can wake up LI on batteries with a welder like with NICAD batteries??

Or is there any other way ?

Yes there is,what you will have to do is take the dead battery and a good battery apart.then solder  two wires from the battery pack before the circuitry and wire the two packs together in parallel then plug the good battery into the charger this will then bypass the dead battery's electronics and allow it to charge. leave the charger on with the battery's over night then remove the piggy back wires, discharge the battery by only 1/3 and then recharge do this several times and you should be good to go worked for me.

what has happened is the battery has been discharged to a point where the battery electronics will not allow it to be recharged

//Carl

 

[micklen]

Do anyone have  any illustration pictures how to solder the piggy back?

Isn't there any otherway to fool the electronics?

//Carl

 

[ajones]

Hi take the two batterys apart make sure you know which one is good/bad the cells will be joined with flat metal staps (tabs)where the two wires that carry the power to the electronics leave the collecton of cells thats where to solder your wires. wire them in parallel (pos to pos and neg to neg) make sure you do not short anything. it is a very simple task just take your time. if you are still unsure take a battery apart take a photo and post it, and I can tell you in more detail.

once you have the two batterys piggy backed put the good one in the charger and follow my earlier post.

 

[micklen]

hi

Sounds that I maybe can rescue the batteries!
Now one more have broken down!!!!! [mad]

Don anyone have any illustrating pictures show how to jump start the batteries?
So I will get the wiring right!

//Carl

 

[ajones]

Hi Carl I doubt anyone can help with a diagram as I said in my earlier post take the case off the battery and post a picture and I can help you in more detail.it is a easy task. its two wires a to a b to b parallele simples

did you get the drill /charger ect from the state? is it 120v input? are you using a step down transformer to run your charger?
can you detail the circumstances of the second battery failure?

 

[micklen]

I will try to get some time to rip the batteries in to parts this evening.
Will try to make some pictures.

yes and no, I have both 110v and 240 charger.

BTW we is the best place to but Dewalt parts?

 

[ajones]

Hi Carl in the Uk, any dewalt service centre will be able to supply the parts you need google dewalt service centre.

what happened to your second battery was it fitted to the drill when it failed or the charger? if the charger which one?

 

[micklen]

Finally did I manage to take a couple of pictures. Has been such nice weather, its hard to sit by the computer then.

Marked to 2 points where I believe I need to put the "jumpstarter cables"

//Carl

 

[ajones]

OK if you look at the PCB you will see the metal contacts which connect the battery to the tool I would follow the connections back to the cells to confirm which are the correct. I believe the two outer contacts are the pos/neg

it is impossible for me to tell you which are correct from the photo but my instinct says it does not look correct with the areas you have highlighted
the metal tab with the red marker looks good

have another look there are three wires that go into the cells that are nothing to do with the pos/neg they are the thermal fuse two wires. and the thermal sensor.one wire

use a meter  to confirm.the pos/neg

you must be sure you make the correct connections.do not short anything if you are not sure which are the correct connections dont do it...

 

[woodguy7]

Talk about tension  [eek]

This looks like a scene from 24 where Jack Bower is trying to stop a bomb from decimating LA  [popcorn]

Woodguy

 

[ajones]

Talk about tension  [eek]

This looks like a scene from 24 where Jack Bower is trying to stop a bomb from decimating LA  [popcorn]

Woodguy

Woodguy I hope thats a large tub of popcorn I think it will be a long wait.....

 

[Rob-GB]

Talk about tension  [eek]

This looks like a scene from 24 where Jack Bower is trying to stop a bomb from decimating LA  [popcorn]

Woodguy

Woodguy I hope thats a large tub of popcorn I think it will be a long wait.....

Seven hours of high tension later... "Can I go out for a refill and a whizz?" [popcorn]

I hope micklen did't cut the wrong wire, just off to check out 'News 24'

Rob.

PS. Interesting thread as I've never looked inside a battery pack before.

 

[Eugen66]

OK if you look at the PCB you will see the metal contacts which connect the battery to the tool I would follow the connections back to the cells to confirm which are the correct. I believe the two outer contacts are the pos/neg

it is impossible for me to tell you which are correct from the photo but my instinct says it does not look correct with the areas you have highlighted
the metal tab with the red marker looks good

have another look there are three wires that go into the cells that are nothing to do with the pos/neg they are the thermal fuse two wires. and the thermal sensor.one wire

use a meter  to confirm.the pos/neg

you must be sure you make the correct connections.do not short anything if you are not sure which are the correct connections dont do it...

Do you really mean that you could piggyback the electronics, ie make a parallel connection? i that case the electronics from the "good" battery will have to supply twice the current or is I  missing something?
I also have a pack that I have changed two cells so I would really like to find a way to make it usefull

 

[jmbfestool]

Talk about tension  [eek]

This looks like a scene from 24 where Jack Bower is trying to stop a bomb from decimating LA  [popcorn]

Woodguy

Woodguy I hope thats a large tub of popcorn I think it will be a long wait.....

Seven hours of high tension later... "Can I go out for a refill and a whizz?" [popcorn]

I hope micklen did't cut the wrong wire, just off to check out 'News 24'

Rob.

PS. Interesting thread as I've never looked inside a battery pack before.

I take it you haven't bought any new Milwaukee cordless tools.  One of their selling points is their new battery range and in their catalogue they have a battery exploded apart explains all the good new features about it. Also when I went to a demo they had one in bits and gave it me to ave a look at it while explaining what's so good about it.

JMB

 

[WarnerConstCo.]

Talk about tension  [eek]

This looks like a scene from 24 where Jack Bower is trying to stop a bomb from decimating LA  [popcorn]

Woodguy

Woodguy I hope thats a large tub of popcorn I think it will be a long wait.....

Seven hours of high tension later... "Can I go out for a refill and a whizz?" [popcorn]

I hope micklen did't cut the wrong wire, just off to check out 'News 24'

Rob.

PS. Interesting thread as I've never looked inside a battery pack before.

I take it you haven't bought any new Milwaukee cordless tools.   One of their selling points is their new battery range and in their catalogue they have a battery exploded apart explains all the good new features about it. Also when I went to a demo they had one in bits and gave it me to ave a look at it while explaining what's so good about it.

JMB

Milwaukee here in the states has had the most horrific battery's in the past 5 years or so.

I wouldn't let someone give me one of their cordless tool's.

 

[mastercabman]

Talk about tension  [eek]

This looks like a scene from 24 where Jack Bower is trying to stop a bomb from decimating LA  [popcorn]

Woodguy

I also had bad luck with cordless Milwaukee tools.

Woodguy I hope thats a large tub of popcorn I think it will be a long wait.....

Seven hours of high tension later... "Can I go out for a refill and a whizz?" [popcorn]

I hope micklen did't cut the wrong wire, just off to check out 'News 24'

Rob.

PS. Interesting thread as I've never looked inside a battery pack before.

I take it you haven't bought any new Milwaukee cordless tools.   One of their selling points is their new battery range and in their catalogue they have a battery exploded apart explains all the good new features about it. Also when I went to a demo they had one in bits and gave it me to ave a look at it while explaining what's so good about it.

JMB

Milwaukee here in the states has had the most horrific battery's in the past 5 years or so.

I wouldn't let someone give me one of their cordless tool's.

 

[Ken Nagrod]

Darcy,  I've been doing testing for Milwaukee with their M12 and M18 line of tools last year and this year.  Their batteries have improved for the most part because the engineers reset the safety limits on the thermal cutouts.  Previously you could actually burn out their motors because the batteries kept delivering power beyond the tool's overload point.  In my testing they've substantially surpassed other brands.  The only thing I still don't like that I've found on other brands as well, the lithium ion batteries performance falls drastically in temperatures below 40 F, sometimes not even performing just below freezing as if they were dead when they had a full charge.  That's why I'll never get rid of my corded stuff.  Hopefully they'll send me the new M28 line to test.  At some point the stuff just gets too heavy for real world use.

 

[Eugen66]

Talk about tension  [eek]

This looks like a scene from 24 where Jack Bower is trying to stop a bomb from decimating LA  [popcorn]

Woodguy

Woodguy I hope thats a large tub of popcorn I think it will be a long wait.....

Seven hours of high tension later... "Can I go out for a refill and a whizz?" [popcorn]

I hope micklen did't cut the wrong wire, just off to check out 'News 24'

Rob.

PS. Interesting thread as I've never looked inside a battery pack before.

I take it you haven't bought any new Milwaukee cordless tools.   One of their selling points is their new battery range and in their catalogue they have a battery exploded apart explains all the good new features about it. Also when I went to a demo they had one in bits and gave it me to ave a look at it while explaining what's so good about it.

JMB

Makita Power tools???? ???