If it doesn’t (or can’t) show up in firmware, there are external solutions that 
can accomplish this — for example the Buddipole PowerMini.  I keep one in-line, 
even without a solar panel connected for just this purpose.  It will both alarm 
and disconnect the external battery when it reaches a preset low voltage.

> 
> Right now there is just the "Bat Min" setting that gives an alarm if the 
> present voltage drops to a set value in the configuration menu. (Automatic 
> shutdown happens at 7.0V according to the manual.) I use an external LiFePO4, 
> and internal NiMH. These have different specs. I would like to see more 
> configuration options that allow me to "disconnect" the external LiFePO4 when 
> it reaches a certain voltage (10V) and then switch to the internal NiMH which 
> may be (and likely are, at least in short order) at a lower voltage than the 
> external. I would also like to be able to have the ability to make the 
> auto-shutdown happen at a higher voltage than 7.0V (8.0V in this case.)

Grant NQ5T
K3 #2091, KX3 #8342



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