Difference between revisions of "Ultrabay 2000 Battery"

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=== UltraBay 2000 Battery ===
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=== Ultrabay 2000 Battery ===
This is a battery that slides into a supported UltraBay 2000.
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This is a battery pack that slides into an Ultrabay 2000 with power interfacing pins.
  
 
=== Features ===
 
=== Features ===
* 10.8V Lithium-Ion
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* Battery specification: 3.2Ah or 3.6Ah, 10.8V, 34.56Wh or 38.88Wh
* 9 cells
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* Battery cell count: Nine, 3.6V lithium-ion polymer prismatic cell
* Up to 3 hours of battery life
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* Battery run time: up to 3 hours
* Weight: 268g (0.59 lbs)
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* Battery charge time: up to 2 hours
* Charge time: 2.0 h
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* Weight: 268 grams or 0.59 pounds
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{{footnotes|
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#The Ultrabay 2000 battery does not support the MT 2655 A21e, as it has no pins to interface with the battery. However, the MT 2628 A21e has this feature.
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}}
 
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[[image:ultrabay2000battery.gif|UltraBay 2000 Battery]]
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[[image:ultrabay2000battery.gif|Ultrabay 2000 battery]]
 
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=== IBM Partnumbers ===
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=== Part numbers ===
*Marketing PN: 02K6646
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==== Sanyo - 3.6Ah, 10.8V, 38.88Wh ====
*FRU PN: 02K6645
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* 02K6817, 02K6818, 02K6819
  
=== Linux Support ===
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==== Sanyo - 3.2Ah, 10.8V, 34.56Wh ====
The second battery is correctly detected by either the APM or ACPI subsystem.
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* 02K6644, 02K6645, 02K6646
  
However, the Linux ACPI subsystem only scans for batteries on boot. This means that the second battery must be present at boot time, or you will not be able to get any info for it.
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=== Usage and Linux support ===
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See [[How to use UltraBay batteries]].
  
We need to find a way of telling the ACPI subsystem to rescan for batteries.
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== Models supporting this accessory ==
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* {{A20m}}, {{A20p}}, {{A21e}}{{footnote|1}}, {{A21m}}, {{A21p}}, {{A22m}}, {{A22p}}, {{A30}}, {{A30p}}, {{A31}}, {{A31p}}
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* {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
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* {{R32}}, {{R40}}
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* [[UltraBase X3]]
  
With kernel 2.6.14.2 (possibly only with IBM_ACPI) there is a sysfs file: /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/LPC/EC/BAT1/eject. There isn't one for BAT0, but then /proc/acpi/battery/BAT0/* shows "not present" when there is no battery. For BAT1 all the states go to 0, critical, etc. "echo 1 > /sys/firmware/acpi/namespace/ACPI/_SB/PCI0/LPC/EC/BAT1/eject" will remove /proc/acpi/battery/BAT1 and turn off the ultrabay light. Interestingly the battery will still be discharging (charging not tested) until it is physically removed.
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[[Category:Ultrabay Devices]]
 
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Also, if you compile the battery module of ACPI as a module, boot with the ultrabay battery present, remove the ultrabay battery (without doing the eject above), /proc/acpi/battery/BAT1 is still there, rmmod battery, modprobe battery, /proc/acpi/battery/BAT1 is gone (BAT0 is back), put the battery back in, /proc/acpi/battery/BAT1 still missing, rmmod battery, modprobe battery, /proc/acpi/battery/BAT1 is back.
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If you boot without the second battery BAT1 never shows up.
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If you eject using the sysfs file above, BAT1 disappears from both /proc and /sys and never comes back.
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Test machine: T23.
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The battery status should also be accessible via [[SMAPI support for Linux|tp_smapi]], independelty of the ACPI system. {{HELP|Please report if tp_smapi support for the second battery indeed works.}}
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=== Supported with ===
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*ThinkPad {{A20m}}, {{A20p}}, {{A21e}}, {{A21m}}, {{A21p}}, {{A22e}}, {{A22m}}, {{A22p}}, {{A30}}, {{A30p}}, {{A31}}, {{A31p}}
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*ThinkPad {{R30}}, {{R31}}, {{R32}}, {{R40}}
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*ThinkPad  {{T20}}, {{T21}}, {{T22}}, {{T23}}, {{T30}}
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[[Category:Components]]
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Latest revision as of 11:01, 15 July 2020

Ultrabay 2000 Battery

This is a battery pack that slides into an Ultrabay 2000 with power interfacing pins.

Features

  • Battery specification: 3.2Ah or 3.6Ah, 10.8V, 34.56Wh or 38.88Wh
  • Battery cell count: Nine, 3.6V lithium-ion polymer prismatic cell
  • Battery run time: up to 3 hours
  • Battery charge time: up to 2 hours
  • Weight: 268 grams or 0.59 pounds

FOOTNOTES [Δ]
  1. The Ultrabay 2000 battery does not support the MT 2655 A21e, as it has no pins to interface with the battery. However, the MT 2628 A21e has this feature.

Ultrabay 2000 battery

Part numbers

Sanyo - 3.6Ah, 10.8V, 38.88Wh

  • 02K6817, 02K6818, 02K6819

Sanyo - 3.2Ah, 10.8V, 34.56Wh

  • 02K6644, 02K6645, 02K6646

Usage and Linux support

See How to use UltraBay batteries.

Models supporting this accessory