The two components seem rather complex. Is there no simpler solution to breaking a circuit when battery input voltage is lower than a set limit?
For example will this PCB disconnect the circuit at 3V ?
Over Discharge Protection Over Discharge Detection Voltage 2.5±0.063V
Over Discharge Release Voltage 3.0±0.075V
For charging the Battery can't I use something as simple as this ?http://www.overlander.co.uk/chargers/lipo-battery-balance-chargers/overlander-rc3-lipo-charger.html