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Batteries

guido

guido

Well-known Member
Picture,

Guido.
a175387.jpg
 
I hate to see all mine together like that ,all I see is $$$$$. Lol. Oh yeah,well convenience too. But mostly money.
 

I have only one style. The drill and the string trimmer use the same battery. I've got several batteries though, and some of them are good. Some are not. Tossed 2 in the trash just a few days ago.
 
I still have the two Dewalt batteries and drill twelve years now. Bought them when I retired. Batteries still kick A$$. The drill smells when I run it. The batteries may outlast the drill. Maybe I shouldn't talk.
 
Hello Grandpa love,

Just an hobby. I repair them and give them away. That is Last year bunch. I have six left to take to the recycle. Here they are all bad cells,

Guido.
a175519.jpg
 
Hello rustyfarmall,

Me too.... those are the ones I get to take apart and make some good packs to give away,

Guido.
 
Hello PAGlenn,

I have one left of the original 2009 XRP pack. I made up three more for myself. Two are NiCad packs, One is a SCR2500 MAH pack, I don't recall what capacity the other one is. One is A lithium-Ion pack, Don't recall that pack capacity either,

Guido.
 
Hello Grandpa love,

That is what I do, take them apart and pick the good cells. There is more to it then that, but just do this. Take a couple apart and see if there are enough cells to do one pack. Keep cells that have at least 1.1 volts. If they can't hold voltage, that is the first reason to discard them. Make a diagram of the configuration or take a picture. Let me know if you need more help,

Guido.
 
Since you are such a battery guy, I have a new HP laptop, 4400mAh Li-Ion battery pack that I bought & used one week before the computer died, so if you want/can use, it it yours.
 
Hello JMOR,

I do appreciate the offer but no, and thank you!. Those are just some of the
packs I have. I have been getting into lithium ion the last couple of years, but
they are a different system all together. I have had some success bringing them back
to life,

Guido.
 
I have a dewalt 18v drill the batteries went bad so I bought dewalt replacement batteries and they were not near the same quality as the ones that came with the drill. They wouldn't last near as long as the original batteries and now one of them has quit. Then someone gave me a pretty much unused 12v dewalt drill and discovered the batteries cost more than the drill was worth so I went out and bought a 20v drill with the lithium batteries and the batteries don't last near as long as the old 18v dewalt. Used to I could work all day with just one battery. With the lithium batteries I'm good for maybe 3 hours. It doesn't go down gradually like the old batteries either. You might feel it drag slightly on one screw and it will quit completely on the next.
 
Hello Stephen Newell,

It's all about power-capacity. A 1500 MAN lithium based battery would not stand a chance !lasting longer against a 2000 MHA NiCad or any other type of battery for that matter.
Power is V X A or watts,
 
(quoted from post at 15:49:43 10/17/17) Hello Grandpa love,

That is what I do, take them apart and pick the good cells. There is more to it then that, but just do this. Take a couple apart and see if there are enough cells to do one pack. Keep cells that have at least 1.1 volts. If they can't hold voltage, that is the first reason to discard them. Make a diagram of the configuration or take a picture. Let me know if you need more help,

Guido.
Click to expand...

I have attempted to rebuild them. Seems that the connections are spot welded instead of soldered which makes it impossible to take apart without destroying something. Also, the individual batteries cannot be tested when they are ALL dead, and I have no way of recharging an individual cell. If the battery pack is dead, and will not take a charge, it goes in the trash and I buy a new battery pack.
 
Hello rustyfarmall,

If they are all dead you just throw them in the recycle bin, as you have already tested them or know that the pack won't take a charge right?. Not necessarily a bad pack, it only takes one bad cell or connection to have zero voltage at the terminals. Your smart charger needs to see voltage to start charging.
The good cells can be easily taken apart from the pack. I can explain in details how it is done. Solder good cells, those that have at least 1.1V showing, charge them and checked again for capacity. Some pack have manufacturing defects that take just a dab of solder to bring back to life.

Guido.
 
(quoted from post at 21:06:47 10/18/17)
(quoted from post at 15:49:43 10/17/17) Hello Grandpa love,

That is what I do, take them apart and pick the good cells. There is more to it then that, but just do this. Take a couple apart and see if there are enough cells to do one pack. Keep cells that have at least 1.1 volts. If they can't hold voltage, that is the first reason to discard them. Make a diagram of the configuration or take a picture. Let me know if you need more help,

Guido.
Click to expand...

I have attempted to rebuild them. Seems that the connections are spot welded instead of soldered which makes it impossible to take apart without destroying something. Also, the individual batteries cannot be tested when they are ALL dead, and I have no way of recharging an individual cell. If the battery pack is dead, and will not take a charge, it goes in the trash and I buy a new battery pack.

Like I said I can explain in details how I do it. You say it's impossible......NOT! The impossible just takes longer to accomplish....

Guido.
Click to expand...
 
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