Replies to This Discussion

Permalink Reply by Simone Chiaretta on June 24, 2012 at 9:01am

Unfortunately I live in an apartment in a big city and no yard, or terrace or garden on my property... but it looks like everyone using RC toys are all living in houses with lot of outside space available. I could go to a public park, but I guess police will come and take me to jail if set a battery on fire in a public property :)

I guess I'll cut the connectors, leave it in the salty water bath, and then bring it to the disposal facility.

Permalink Reply by Mark Bateson on June 24, 2012 at 9:15am

Do not drill or pound holes in your battery ... Very dangerous and not recommended. The battery layers are porus and the salt water will safely discharge the cells. Just simply place them in salt water and that's it. I typically leave mine in a salt water bath for a week or two and then dispose.

DeveloperPermalink Reply by R_Lefebvre on June 24, 2012 at 9:52am

Yeah, I wanted to try exploding a 4S 5000 battery that had been crash damaged, so I drove a nail through it.  I was all dressed up in full welding gear (just short of a bomb disposal suit) with my family watching from a distance and my wife with phone in hand...

Not much happened.  I felt like a real dork.  :)  It smoked a bit, and that was it.

Next time I'll try overcharging it with some long leads.... (I just have to try...)

DeveloperPermalink Reply by John Arne Birkeland on June 24, 2012 at 2:07pm

Mark. The Lipo cell packaging is pretty much watertight. If you don't punch a hole they have to stay in the saltwater for a very long time for the chemistry to be neutralized.

Permalink Reply by Simone Chiaretta on June 24, 2012 at 9:42am

I guess I should build a lipo discharger that connects to the while balancer and then to a car lamp socket :)

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Permalink Reply by Simone Chiaretta on June 24, 2012 at 12:13pm

I happened to have a Xenon 12V 20W light bulb around, so just soldered some wires on it and connected to the balancing plug just to discharge the 2 healthy cells.
For the moment it's discharging, not very fast, but going down...
Shall I go to 0.0V or under 1V is enough? And shall I also discharge the puffed and damaged cell, or is it safe to leave it at 0.6V?

Thx

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DistributorPermalink Reply by Martint BuildYourOwnDrone.co.uk on June 24, 2012 at 2:32pm

Hello Simone,

 

I think I would follow this advice:

 

https://sites.google.com/site/tjinguytech/charging-how-tos/lipo-dis...

 

Regards

 

Martin.

www.buildyourowndrone.co.uk

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Permalink Reply by Simone Chiaretta on June 24, 2012 at 3:22pm

Hi Martin,

thank you.

I've seen it, basically I've connected it to one 12V 20W bulb, it was a 2200 mha 3S battery. Took a bit more than 1.2H as he said (when the light went off there was still 1.5V in the battery). I kept it connected (but light was off) another a few hours, and now the total reading is 0.06V (all in one of the 3 cells).

Now connected the leads, and set in a metal box for the night. It puffed a bit during the discharge, but never heated. If it passed the night without exploding (but apparently should not as the voltage is almost ZERO) I'll dispose it in the normal trash.

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