MAX882 battery protection
Please read the datasheet correctly, there is 7mv of hysteresis for Standby comparator.

If the battery voltage slightly goes up after shutdown and the STBY pin input voltage exceeded the upper STBY threshold of 1200mV+7mv than your regulator will start and again after some battery drainage the voltage crosses the lower STBY threshold it will shutdown.
But this process will repeat until your battery will be not able to cross the upper STBY threshold Voltage.