On my last set of batteries i bought they described how to safe a battery so you could throw them out.
The described using a bucket of water that is saturated with salt then putting the batteries into the water till there is 0 voltage.
Does anyone have any other way they do this?
the last time I tried this it failed. I was getting a reading of 0v until I scraped at the deans plug a bit... the salt water had merely corroded the plug to the point of being unable to make an electrical connection. it spent three days and nights (72 hours) in the salt water and was still reading 7v from a three cell.
im currently trying to find a better way, as I don't trust this method anymore. heres a link to a lot of good information on the subject, some simple calculations, and good ideas...
http://www.tjinguytech.com/charging-how-tos/lipo-disposal
im working on a bulb based discharging circuit and I keep my buck of sand nearby
ive used in the past a simple esc with the lvc turned off, a small brushless motor, a prop and a servo tester.
I made a stand to hold the motor. burry the battery in sand, then plug them in and use the servo tester to run the motor until it cant run any longer... this worked ok, but at some point, the motor wouldn't be able to spin anymore, and the battery still showed some voltage while not under the load of the motor.
so long story short, do what ever makes you feel safe, but do your research and make an informed decision