I think my friend gave me a shorted vtc4

[Stinkytofus]

1. On my xtar vp2 it shows 0.44v but it charges
2. when he gave me, it came out of his pockets, i asked him did he have keys in there, he said yes


So now, i assume the battery shorted
1. Throw it out ?
2. Or see if it can charge to 4.20v and use it ?

Thanks

 

[Baditude]

Against better judgement, since you have the xtar VP2, you could try to recover the spent Sony battery. But keep a very close eye on them during the process, and be ready for a possible thermal runaway.

Generally speaking, an IMR/hybrid battery (Sony VTC) is considered spent once it falls to 2.5 volts or lower. Some chargers, like the Xtar VP2, have the ability to recover a spent battery using special algorhythms. I have no personal experience with this and am only relating what I've read.

If it was me, I'd recylcle the battery at a Home Depot or Radio Shack.

 

[Stinkytofus]

Against better judgement, since you have the Xtar VP2, you could try to recover the spent Sony battery. But keep a very close eye on them during the process, and be ready for a possible thermal runaway.

Generally speaking, an IMR/hybrid battery (Sony VTC) is considered spent once it falls to 2.5 volts or lower. Some chargers, like the Xtar VP2, have the ability to recover a spent battery using special algorhythms. I have no personal experience with this and am only relating what I've read.

If it was me, I'd recylcle the battery at a Home Depot or Radio Shack.

So lets say it charges fine from 0.44v to 4.20v, its usable ?

 

[Baditude]

So lets say it charges fine from 0.44v to 4.20v, its usable ?

That depends upon your standards of safety.

This battery has had some compromise. It has either been shorted out, or it has been over-discharged.

This was probably a $10 battery. It will cost another $10 to replace it with a new one. Say that this compromised battery charges back up to 4.2 volts, but because it has some internal damage that you can't detect, it vents in your mechanical mod when you use it. It may no longer have the 30 amps CDR it had when new, but only has 15 amps and you're still using a coil which draws 25 amps from the battery.

The answer to your question is relatively clear to me.

 

[Stinkytofus]

That depends upon your standards of safety.

This battery has had some compromise. It has either been shorted out, or it has been over-discharged.

This was probably a $10 battery. It will cost another $10 to replace it with a new one. Say that this compromised battery charges back up to 4.2 volts, but because it has some internal damage that you can't detect, it vents in your mechanical mod when you use it. It may no longer have the 30 amps CDR it had when new, but only has 15 amps and you're still using a coil which draws 25 amps from the battery.

The answer to your question is relatively clear to me.

Only using regulated, but yea i get what ur saying... Chance for problem better b safe than sorry

 

[Stinkytofus]

That depends upon your standards of safety.

This battery has had some compromise. It has either been shorted out, or it has been over-discharged.

This was probably a $10 battery. It will cost another $10 to replace it with a new one. Say that this compromised battery charges back up to 4.2 volts, but because it has some internal damage that you can't detect, it vents in your mechanical mod when you use it. It may no longer have the 30 amps CDR it had when new, but only has 15 amps and you're still using a coil which draws 25 amps from the battery.

The answer to your question is relatively clear to me.

But i will try charging it first, see if vp2 can save it

 

[Baditude]

It will be interesting to see if the VP2 can recover a battery over-discharged at 0.44 volts. But please keep a close eye on it in case the battery should vent and cause a fire or explosion.

I don't know where you charge your batteries, but I always recommend charging them on a flame-resistant surface: Stove top, marble countertop, metal baking pan, concrete floor in the garage.

 

[Stinkytofus]

Ya i charged it to 1.70 then took it out with me to my bros place, 1/2 hr later and slap it back on charger, it displayed .98, thats a huge voltage drop, now charging it again

 

[zoiDman]

Ya i charged it to 1.70 then took it out with me to my bros place, 1/2 hr later and slap it back on charger, it displayed .98, thats a huge voltage drop, now charging it again

I wouldn't fool around with that Battery. It Isn't doing what a Healthy Battery should be Doing.

You got it for Free. I would Recycle it.

 

[hypocritelecteur]

The best possible outcome here is that you get a battery you know is compromised for free.

If someone is giving away free groin kicks do you get in line?