Dangers of dismantling recharchable batteries.
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classic33
Leg End Member
Should look something like this
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I've replaced the batteries on their cordless screw drivers, with no problems.
http://www.instructables.com/id/Cordless-drill---Improving-the-battery/
.
I've replaced the batteries on their cordless screw drivers, with no problems.
http://www.instructables.com/id/Cordless-drill---Improving-the-battery/
gbb
Squire
- Location
- Peterborough
Stripped a laptop battery for its cells and had no problems. I tread carefully, made sure I didn't short any cells...I'd be interested what the potential problems are specifically....you always read the danger labels, that's just them protecting themselves as much as you but I've yet to see specific dangers on the Internet or anywhere else.
I like your thinking... (I assume) is your battery dead, they are horrendously expensive.
I like your thinking... (I assume) is your battery dead, they are horrendously expensive.
lazybloke
Ginger biscuits and cheddar
- Location
- Leafy Surrey
Doesn't the label 'Cd' indicate NiCd cells? These are standard old technology, much more stable than Lithium Ion cells, and no need for complex protection circuitry.
go for it. I did the same for a philishave - easy.
go for it. I did the same for a philishave - easy.
jefmcg
Guru
I think you're right. I was assuming li-ion. Still, no harm in being cautious.
the_mikey
Legendary Member
- Location
- South Gloucestershire
[QUOTE 4913109, member: 9609"]I know I shouldn't be doing this and on my head be it.
I am wanting to take to bits a 12v battery pack off a cordless drill, so as I can use the connector to wire the drill up to a car battery. But what is inside the pack that is hazardous and what should I be aware of ? View attachment 367293 [/QUOTE]
The label clearly indicates that the battery cells contain cadmium. Probably Ni-Cd cells.
I am wanting to take to bits a 12v battery pack off a cordless drill, so as I can use the connector to wire the drill up to a car battery. But what is inside the pack that is hazardous and what should I be aware of ? View attachment 367293 [/QUOTE]
The label clearly indicates that the battery cells contain cadmium. Probably Ni-Cd cells.
[QUOTE 4913109, member: 9609"]I know I shouldn't be doing this and on my head be it.
I am wanting to take to bits a 12v battery pack off a cordless drill, so as I can use the connector to wire the drill up to a car battery. But what is inside the pack that is hazardous and what should I be aware of ? View attachment 367293 [/QUOTE]
If it's 12 volt it will be either NiCad or NiMh battery technology. They are both nominally 1.2v per cell, so there will be 10 cells in the pack. LiPo and Li-ion batteriers are nominally around 3.6v per cell, so it is impossible to make up a 12volt pack out of either of them. They would be either 10.8v or 14.4v.
There is no mystery in dismantling a battery pack used in a power tool, I used to do it all the time to get cheap batteries for rc models. Underneath all the flashy exterior of most tools, they are fairly agriculural underneath. Just proceed carefully and don't short anything out.
I am wanting to take to bits a 12v battery pack off a cordless drill, so as I can use the connector to wire the drill up to a car battery. But what is inside the pack that is hazardous and what should I be aware of ? View attachment 367293 [/QUOTE]
If it's 12 volt it will be either NiCad or NiMh battery technology. They are both nominally 1.2v per cell, so there will be 10 cells in the pack. LiPo and Li-ion batteriers are nominally around 3.6v per cell, so it is impossible to make up a 12volt pack out of either of them. They would be either 10.8v or 14.4v.
There is no mystery in dismantling a battery pack used in a power tool, I used to do it all the time to get cheap batteries for rc models. Underneath all the flashy exterior of most tools, they are fairly agriculural underneath. Just proceed carefully and don't short anything out.
mjr
Comfy armchair to one person & a plank to the next
- Location
- mostly Norfolk, sometimes Somerset
I've always assumed it's the risk of a shock if you short it.
classic33
Leg End Member
Wrong battery type!
fossyant
Ride It Like You Stole It!
- Location
- South Manchester
That, or if Lipo, the battery can go into runaway and heat up and set on fire. I've stripped two of those cheap 4 cell battery packs from the cheap Chinese lights when they have failed. Even one cell failing causes the pack to be useless. I ended up with 6 good cells out of 8 which I use in torches.
Even slightly shorting them whilst removing the connecting tabs will cause heat and smoke.
Yellow Saddle
Guru
- Location
- Loch side.
There are massive risks. Be aware. This is dangerous for the bank accounts of the companies making proprietary battery packs.
By dismantling the pack and replacing it with standard (and better) cells you risk short-circuiting the lucrative business of selling proprietary packs that are routinely "improved" with different shapes so that you can be protected from re-using a perfectly good drill/screwdriver/strimmer/gadget after the supplier has discontinued the old dangerous shape.
By dismantling the pack and replacing it with standard (and better) cells you risk short-circuiting the lucrative business of selling proprietary packs that are routinely "improved" with different shapes so that you can be protected from re-using a perfectly good drill/screwdriver/strimmer/gadget after the supplier has discontinued the old dangerous shape.
Cycleops
Legendary Member
- Location
- Accra, Ghana
What did you use to solder the cell tags to the batteries @classic33 ?
I've used a high wattage iron but found it wasn't hot enough.
I've used a high wattage iron but found it wasn't hot enough.
