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Values for Intel System Management Bus Smart Battery command codes

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Command Protocol Description

00h

Read / Write Word

"ManufacturerAccess" implementation-specific

01h

Read / Write Word

get/set Low Capacity Alarm threshold

02h

Read / Write Word

get/set Remaining Time Alarm value (in minutes)

03h

Read / Write Word

get/set battery characteristics (see #00489)

04h

Read / Write Word

"AtRate" indicate charge/discharge rate

05h

Read Word

"AtRateTimeToFull" time to completely charge (in min.)

06h

Read Word

"AtRateTimeToEmpty" time to entirely discharge (min.)

07h

Read Word

"AtRateOK" boolean: can battery supply another 10sec?

08h

Read Word

internal battery temperature (in 0.1 Kelvins)

09h

Read Word

current battery voltage in millivolts

0Ah

Read Word

current flowing through battery in milliamperes (positive if charging, negative if discharging)

0Bh

Read Word

average current over the past minute

0Ch

Read Word

expected error margin in capacity computations in %

0Dh

Read Word

predicted remaining charge as % of full charge

0Eh

Read Word

predicted remaining charge as % of design capacity

0Fh

Read Word

predicted remaining charge in mAh or 10mWh

10h

Read Word

predicted full charge capacity in mAh or 10mWh

11h

Read Word

predicted remaining battery life in minutes FFFFh = not discharging

12h

Read Word

rolling average of predicted life over past minute

13h

Read Word rolling average of predicted charge time over past min. FFFFh = not charging

14h

Read Word

get battery's desired charging current in mA

14h

Write Word

set charging current in mA

15h

Read Word

get battery's desired charging current in mV

15h

Write Word

set desired charging voltage in mV

16h

Read Word get current battery status (see #00490)

17h

Read Word get number of charge/discharge cycles for battery

18h

Read Word get design capacity in mAh or 10mWh

19h

Read Word

get design voltage

1Ah

Read Word

get specification information (see #00491)

1Bh

Read Word

get manufacture date (see #01665 at INT 21/AX=5700h)

1Ch

Read Word

get serial number

1Dh - 1Fh

reserved

20h

Read Word

get manufacturer's name

21h

Read Word

get device name

22h

Read Word

get device chemistry (see #00492)

23h

Read Word

get manufacturer data

24h - 2Eh

reserved

2Fh

manufacturer-specific

30h - 3Bh

reserved

3Ch - 3Fh

manufacturer-specific

Note:

Bits 7-6 are reserved for addressing multiple batteries in a future version of the specification.

See Also:

#00487