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912002137885
IBM 08K8181 6-Cell Li-Ion Battery for ThinkPad G40 G41 Series
912002137885

IBM 08K8181 6-Cell Li-Ion Battery for ThinkPad G40 G41 Series

Best price now

$207.67at GotodirectChecked Nov 13

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Price facts

  • Last seen at $207.67 at Gotodirect on Nov 13.

Our take on the IBM 08K8181 6-Cell Li-Ion Battery for ThinkPad G40 G41 Series

The IBM 08K8181 is a 6-cell lithium-ion replacement battery for ThinkPad G40 and G41 laptops. It is the original-style pack for these early-2000s desktop-replacement models, so it fits their bay directly and restores cordless use for a machine that is otherwise tied to an outlet. These laptops are long discontinued, so the battery's value depends on whether the pack is fresh stock rather than on features; there is no modern rival for the exact fit. Buyers should expect modest runtime by today's standards, since the G40 and G41 are heavy, power-hungry laptops.

Best forKeeping a working ThinkPad G40 or G41 usable off AC powerRestoring a vintage ThinkPad for light tasks or collectionReplacing a dead or missing original pack
Pros
  • Direct-fit 6-cell pack for the G40 and G41 battery bay
  • Lithium-ion chemistry, the same type as the original
  • Restores portable use of a desktop-replacement ThinkPad
  • No adapter or modification needed for compatible models
Cons
  • Fits only the G40 and G41, not other ThinkPad series
  • Old stock may have degraded capacity from years of storage
  • Runtime is short by modern laptop standards
  • No charge indicator or smart features beyond the basic pack

IBM 08K8181 6-Cell Li-Ion Battery for ThinkPad G40 G41 Series prices at every store

  • GotodirectNew

    In stock

    $207.67Checked Nov 13
    Visit Gotodirect

Store links may earn us a commission.

About the IBM 08K8181 6-Cell Li-Ion Battery for ThinkPad G40 G41 Series

This is an IBM 6-cell lithium-ion battery, part number 08K8181. It is made for ThinkPad G40 and G41 series laptops.

Brand
IBM
Part number
08K8181
Battery type
6-cell lithium-ion
Compatibility
ThinkPad G40 and G41 series

Questions and answers

Which ThinkPad models does this battery fit?
It is made for the ThinkPad G40 and G41 series. It will not fit other ThinkPad lines, so check your model before buying.
Is this an original IBM battery?
The part number 08K8181 is IBM's designation for the G40/G41 6-cell pack. Confirm with the seller that the pack carries that part number.
How long does the battery last per charge?
IBM rated the original 6-cell pack for a few hours of light use on these large laptops. Real runtime is shorter under load, and older stock may hold less.
Will a new battery fix a G40 that only runs on AC power?
If the current pack is dead or missing, a working replacement should let the laptop run on battery again. If the laptop still won't charge, the fault may be in the charging circuit.
Does it need any software or setup?
No. It is a drop-in pack for the battery bay; the laptop's own power management handles charging.
Where is the IBM 08K8181 6-Cell Li-Ion Battery for ThinkPad G40 G41 Series cheapest?
At Gotodirect, for $207.67, as of our latest check.