Li-Ion packs

[Ron Van Putte]

Jerry Budd wrote:

 
> I know that the DuraLight folks are putting some circuitry into their 
> battery packs to eliminate overcharging as an issue.  However, that 
> extra circuitry introduces additional failure modes, which may be what 
> we are starting to hear about on this (and other) lists.  I personally 
> don't think it's really necessary, and in fact it may actually cause 
> more problems than it solves.


Jerry is partially correct.  The Duralite Plus Li-Ion battery packs do 
have a voltage cutoff device.  However, the Duralite Plus Li-Ion 
chargers also have a voltage cutoff device.  The charger's is set at 8.4 
volts and the one in the pack is at 8.7 volts.  This is a safety 
feature, so one will cut off if the other doesn't.  It's unlikely that 
both will fail at the same time.

Ron Van Putte


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