System specifications - ThinkPad A21e (2655), A22e

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System specifications - ThinkPad A21e (2655), A22e

Physical specifications

Width: 305 mm (12.0 in)
Depth: 254 mm (10.0 in)
Height: 35 mm (1.4 in)
Weight (approximate):
Intel Celeron processor models:
- 2.61 kg (5.8 lb) (Models with 358.1-mm (14.1-in) display with NiMH battery pack and CD-ROM)
- 2.43 kg (5.4 lb) (Models with 358.1-mm (14.1-in) display with Li-Ion battery pack and CD-ROM)
- 2.62 kg (5.8 lb) (Models with 337.8-mm (13.3-in) display with NiMH battery pack and CD-ROM)
- 2.44 kg (5.4 lb) (Models with 337.8-mm (13.3-in) display with Li-Ion battery pack and CD-ROM)
- 2.59 kg (5.7 lb) (Models with 307.3-mm (12.1-in) display with NiMH battery pack and CD-ROM)

Intel Pentium III processor models:

- 2.58 kg (5.7 lb) (Models with 358.1-mm (14.1-in) display with Li-Ion battery pack and DVD-ROM)
- 2.49 kg (5.5 lb) (Models with 358.1-mm (14.1-in) display with Li-Ion battery pack and CD-ROM)
- 2.51 kg (5.5 lb) (Models with 337.8-mm (13.3-in) display with Li-Ion battery pack and CD-ROM)
Battery pack (NiMH): 481.5 g (1.06 lb)
Battery pack (Li-Ion): 291.5 g (0.64 lb)
AC adapter (2-pin or 3-pin)
Power cord for AC adapter
CD-ROM drive

NOTE: Actual specifications and weights may vary based on features, vendor components, or manufacturing processes.

Electrical specifications

Universal AC adapter (72 W), input is 100/240 V AC, 1.5/0.9 A, 50/60 Hz and output is 16 V DC, 4.5 A

NiMH battery pack: 8.4 V, 4.5 AH, 7 cell/pack
Li-Ion battery pack: 10.8 V, 3.2 AH, 6 cell/pack

Heat dissipation

191 Btu/hr maximum

Heat emissions

56 watts maximum

Air temperature for shipping and storage

20 degrees to 60 degrees C (-4 degrees to 140 degrees F)

Acoustic noise level: Category 3D (office environment)

Sound pressure level (operator position): 40 dB (operating)
Sound power level: 5.1 Bels (operating), 4.8 Bels (idling)

NOTE: The noise emission level stated is the declared (upper limit) sound power level, in Bels, for a random sample of machines, typically configured, and operating in idle mode, for example, powered on, but no DASD read/write or other I/O activity. All measurements made in accordance with ISO 7779, and reported in conformance with ISO 9296.

Operating environment

ThinkPad computers are designed, built, and tested for high quality and reliability. When used properly in standard business environments, a ThinkPad system should be a reliable computing asset for many years. However, harsh environments and abuse can damage ThinkPads since they are not intended to withstand extreme temperatures, dust, shock, or other severe physical environments. ThinkPad systems should not be used in unsuitable environments. For example, a ThinkPad system should not be used in non-stationary environments, such as in-vehicle installations, without additional casing or shock-dissipation. IBM warrants that the ThinkPad will conform to its Official Published Specifications when used in a suitable physical operating environment.

Air temperature: 0 to 8,000 ft

Operating: 5 degrees to 35 degrees C (41 degrees to 95 degrees F) (without diskette)
Operating: 10 degrees to 35 degrees C (50 degrees to 95 degrees F) (with diskette inside unit)
System off: 5 degrees to 43 degrees C (41 degrees to 110 de grees F)
Storage/shipment: -20 degrees to 60 degrees C (-4 degrees to 140 degrees F)
Wet bulb (maximum): 29.4 degrees C (85 degrees F)

Air temperature: 8,000 to 10,000 ft

Operating: 5 degrees to 31.3 degrees C (41 degrees to 88 de grees F) (without diskette)
Operating: 10 degrees to 31.3 degrees C (50 degrees to 88 de grees F) (with diskette inside unit)
System off: 5 degrees to 43 degrees C (41 degrees to 110 de grees F)
Storage/shipment: -20 degrees to 60 degrees C (-4 degrees to 140 degrees F)
Wet bulb (maximum): 25.7 degrees C (78 degrees F)

NOTE: The maximum temperature when the system is on is linearly dereased from 8,000 ft to 10,000 ft.

Relative humidity