Batteries

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This page gives an overview over the different types of battery technologies (e.g. Nickel-Cadmium, Nickel-Metal Hydride, Lithium-Ion) and options featured in or for ThinkPads.

Ultrabay batteries are listed in the Ultrabay Devices page.

For advice on battery treatment, see Maintenance.

See also Lenovo's Batteries and Battery Chargers - Reference guide.

RTC/CMOS battery types featured in ThinkPads

CR1220

CR1620

CR1632

CR2025

CR2032

CR2330

ML1220

Battery packs featured for ThinkPads

Attached via the dock connector

Attached via the internal battery connector

Battery technologies featured in ThinkPads

Standard AA batteries

NiCd

Stupid (battery packs without embedded micro-controller)

Ni-MH

Stupid (battery packs without embedded micro-controller)

Smart (battery packs with embedded micro-controller)

Li-Ion

Stupid (battery packs without embedded micro-controller)

Smart (battery packs with embedded micro-controller)