I just ordered a 9 cell battery for my T42: Two questions

[IBMorBust]

It's the 7.2 Amp/Hr (9 Cell Li-Ion):

1) How long will the battery life be?
2) What's the best way to ensure that it lasts as long as possile?

Thank you.

[IBMorBust]

One other thing I forgot to ask:

3) Will the 9 cell battery fit into the sleeve that comes with the Brenthaven Slim Deluxe bag?

Thnks a ton.

[Kenn]

Depending on usage, the 9-cell should usually give you about 25-35% more battery life. IIRC, most 14" configurations get about 5.5+ hours, 15" gets about 4.5.