[NSRCA-discussion] Li-Po Question

[AtwoodDon at aol.com]

There are many ways to drain the battery down to safe levels.  I have  
heard the lipos are 'safe' anywhere below 2V per cell, however, I figure as  
long as I have something draining them, I just leave them on the load until 
they  are basically 'dead'.
 
For anything up to 3 cells, I use an automobile tail light bulb.  Just  
solder 2 leads onto the bulb at the 2 contact points and clip the other ends  
onto the battery leads.  For a 5 cell pack, I would use 2 bulbs in  series.  
Put them in a safe area, clip the bulbs on and leave them for a  couple 
days.  Check the voltage from time to time and when it gets down to  about zero, 
just throw the battery in the trash.
 
I tried the salt water bath approach and it didn't do anything for  me.  
After a couple days, the voltage had declined very little so I took  the light 
bulb approach.  Actually anything that puts a load on the  batteries will 
work.  A large resistor, light bulb, old brushed motor,  etc.
 
Don
 
 
In a message dated 8/30/2009 6:10:08 A.M. Pacific Daylight Time,  
Snaproll4 at aol.com writes:

I have a Li-Po pack(5000) that needs to be thrown away.  It does not  
appear to be physically damaged, but I need to know about the voltage.   How low 
should I discharge it and I how do I do that?  My TP charger  would take it 
down to 3.3 volts/cell.
 
TIA.
 
Steve

 
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