Data Flash: Settings; Configuration; FET Options; H1. 
Bit 0: Reserved
Bit 1: Reserved
Bit 2: OTFET - FET action in OVERTEMPERATURE mode
  0 = No FET action for overtemperature condition
  1 = CHG and DSG FETs will be turned off for overtemperature conditions.
Bit 3: CHGSU - FET action in CHARGE SUSPEND mode
  0 = FET active
  1 = Charging or precharging disabled, FET off
Bit 4: CHGIN - FET action in CHARGE INHIBIT mode
  0 = FET active
  1 = Charging or precharging disabled, FET off
Bit 5: CHGFET - FET action on valid charge termination
  0 = FET active
  1 = Charging or precharging disabled, FET off
Bit 6: SLEEPCHG - CHG FET enabled during sleep
  0 = CHG FET off during sleep
  1 = CHG FET remains on during sleep.
Bit 7: Reserved
- See also
 - dfReadFetOptions()