Battery protection circuit
I am using two 18650 cells in series to power a RC car. Is the voltage goes below 6.2 V, the battery should be disconnected to prevent over discharging the battery. At the same time I want to implement reverse battery protection into the circuit. Since n-channel MOSFETs will be used for the H-bridge, therefore I want to use one for the reverse battery protection as well:
What kind of IC can be used to drive the MOSFET, so that when the voltage drops below 6 V the battery disconnects from the load? Is it possible to use a low voltage detector, for example R311x or TPS3840 or other, with a simple voltage divider? Or is there a better solution to this problem?
Would this circuit work? EDIT 2.0: The load and battery cells are supposed to be switched in this schematics. The trigger threshold is 4 V, so that when the battery voltage goes to 6 V the voltage supervisor will set the reset voltage to 0 V turning the upper MOSFET off.
Another question, what will be the difference if instead of 10 kOhm and 20 kOhm, 10-times bigger values would be used?