Change 0.9 to 1, removing two bytes(or bits I’m terrible at binary)
$ sudo ectool battery 0
Battery 0 info:
OEM name: NVT
Model number: FRANGWAT01
Chemistry : LION
Serial number: 0035
Design capacity: 3915 mAh
Last full charge: 3677 mAh
Design output voltage 15480 mV
Cycle count 174
Present voltage 17513 mV
Present current 1384 mA
Remaining capacity 3089 mAh
Desired voltage 17600 mV
Desired current 2740 mA
Flags 0x0b AC_PRESENT BATT_PRESENT CHARGING
I documented it here