Posted: 3/21/2009 10:25:07 PM EDT
I remember taking two 9 volts and cliping them together. Positive to negative and they got really hot. Will they explode if they are left like this? I don't want to find out first hand. 
|
If you remember clipping them together, you should also remember the severe heat generated that burned your hands and caused you to never do that again. 
They won't explode, but they can put out some SERIOUS heat, enough to cause a fire if they are near anything combustible. Most if not all batteries will do this if you short the terminals together. For more serious fun, find some sensitive electronics and hook the battery up backwards. Then you can see your explosions. |
|
Not likely to explode as most cells have pressure relief valves. Since they are full of solids with a liquid electrolyte, pressure builds fast and slight release lowers it.
They will hiss steam which can burn. And the KOH electrolyte can burn chemically. BAD. As in blindness in seconds. Now a NiMH battery can evolve hydrogen gas at higher temps. And if there is a spark... |
|
Quoted:
If you remember clipping them together, you should also remember the severe heat generated that burned your hands and caused you to never do that again.
They won't explode, but they can put out some SERIOUS heat, enough to cause a fire if they are near anything combustible. Most if not all batteries will do this if you short the terminals together. For more serious fun, find some sensitive electronics and hook the battery up backwards. Then you can see your explosions. Wore turnout gloves. No burns.
|
|
Quoted:
If you remember clipping them together, you should also remember the severe heat generated that burned your hands and caused you to never do that again.
They won't explode, but they can put out some SERIOUS heat, enough to cause a fire if they are near anything combustible. Most if not all batteries will do this if you short the terminals together. For more serious fun, find some sensitive electronics and hook the battery up backwards. Then you can see your explosions. This is what is technically known as a 'short circuit.' It is also a very bad idea to put such a battery in your pocket, even if it is mostly discharged  . The reason is that you very likely will also put your car keys and spare change in the same pocket, creating a very low-resistance, high-current condition. Go ahead, ask me how I know! First I , then I .
BTW, mine wasn't a 9-volt battery such as you find in the grocery stores... it was a 8.5 rechargable for my Icom battery pack, capable of LOTS higher current than the grocery store variety. 
|
|
Quoted:
Quoted:
If you remember clipping them together, you should also remember the severe heat generated that burned your hands and caused you to never do that again.
They won't explode, but they can put out some SERIOUS heat, enough to cause a fire if they are near anything combustible. Most if not all batteries will do this if you short the terminals together. For more serious fun, find some sensitive electronics and hook the battery up backwards. Then you can see your explosions. This is what is technically known as a 'short circuit.' It is also a very bad idea to put such a battery in your pocket, even if it is mostly discharged . The reason is that you very likely will also put your car keys and spare change in the same pocket, creating a very low-resistance, high-current condition. Go ahead, ask me how I know! First I, then I.
BTW, mine wasn't a 9-volt battery such as you find in the grocery stores... it was a 8.5 rechargable for my Icom battery pack, capable of LOTS higher current than the grocery store variety. like shooting yourself with a nailgun...you always learn the first time |