Hello!

I have 2 batteries in my thinkpad helix laptop, and it looks like powertop shows "the estimated remaining time" just for first battery, what is a bit confusing. May be it somehow connected to some hardware features of batteries switching.

# powertop, Overview page
The battery reports a discharge rate of 7.67 W
The estimated remaining time is 2 hours, 17 minutes

# powertop -V
PowerTOP versionv2.4, compiled on Jul 29 2013

# cat /sys/class/power_supply/BAT0/uevent
POWER_SUPPLY_NAME=BAT0
POWER_SUPPLY_STATUS=Unknown
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_CYCLE_COUNT=0
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=11100000
POWER_SUPPLY_VOLTAGE_NOW=12503000
POWER_SUPPLY_POWER_NOW=0
POWER_SUPPLY_ENERGY_FULL_DESIGN=42010000
POWER_SUPPLY_ENERGY_FULL=42010000
POWER_SUPPLY_ENERGY_NOW=41940000
POWER_SUPPLY_CAPACITY=99
POWER_SUPPLY_MODEL_NAME=45N1103
POWER_SUPPLY_MANUFACTURER=SMP
POWER_SUPPLY_SERIAL_NUMBER= 3507

# cat /sys/class/power_supply/BAT1/uevent
POWER_SUPPLY_NAME=BAT1
POWER_SUPPLY_STATUS=Discharging
POWER_SUPPLY_PRESENT=1
POWER_SUPPLY_TECHNOLOGY=Li-poly
POWER_SUPPLY_CYCLE_COUNT=0
POWER_SUPPLY_VOLTAGE_MIN_DESIGN=14800000
POWER_SUPPLY_VOLTAGE_NOW=15178000
POWER_SUPPLY_POWER_NOW=8165000
POWER_SUPPLY_ENERGY_FULL_DESIGN=28050000
POWER_SUPPLY_ENERGY_FULL=26370000
POWER_SUPPLY_ENERGY_NOW=16750000
POWER_SUPPLY_CAPACITY=63
POWER_SUPPLY_MODEL_NAME=45N1101
POWER_SUPPLY_MANUFACTURER=SMP
POWER_SUPPLY_SERIAL_NUMBER= 1840