Lenovo T420i manual Battery pack, Important notice for replacing a battery pack

1010 Battery pack

Important notice for replacing a battery pack:

Lenovo ThinkVantage Toolbox (in Windows 7) has an automatic battery diagnostic that determines if the battery pack is defective. A battery pack FRU should not be replaced unless this diagnostic shows that the battery is defective.

The only exception to this is if the battery pack is physically damaged or a customer is reporting a possible safety issue.

If Lenovo ThinkVantage Toolbox is not installed in the computer, the customer should download this program before a non-physically damaged battery pack is replaced. Note that the replacement of a physically damaged battery pack is not covered by the warranty.

Removal steps of battery pack

DANGER

Use only the battery specified in the parts list for your computer. Any other battery could ignite or explode.

Unlock the battery latch 1 . Holding the battery latch in the unlocked position the direction shown by arrow 3 .

2 , remove the battery pack in

When installing: Install the battery pack in the slot. Make sure that the battery latch is in the locked position.

Chapter 8. Removing and replacing a FRU 63