KIS-3R33S - how to protect batteries from deep discharge?

[Topper]

I'v build few mods with KIS-3R33S so far so good but...as the specs say and the regulated power source this DC-DC buck can work from 4.75V
When we use two 18350 for power source that means batteries will deep discharge to 4.75/2= 2.37V each.
This will kill them if not at first time after 10 cycles will be trashed...
What can I put in Vin or ON/OFF pin to protect batteries and stop to work at 5.6-6.0V (around safe discharge level for LiOn bats)

Please, advice moders !

 

[Str8V8ping]

Im not familiar with the chip your using but if it has a on/off pin maybe a low volage cutoff zener diode would work . Run a 6v zener in reverse with a 10k resistor going to ground .When voltage gets down to 6v it will go to ground and not turn on.

 

[breaktru]

See Low Voltage Cut-Out: http://www.e-cigarette-forum.com/forum/battery-mods/193434-low-voltage-cut-out.html