Any rough idea how long this notebook battery will last?

[etalns]

96 WHr Lithium Ion 12-Cell Battery,Inspiron 5100

I'm going to buy two of them for school next year for my new inspiron 5100. Do ya tihnk it'd be possible to get 10 hours out of them together of on time...I'll mainly be word processing and web surfing (wireless)

 

[Spicedaddy]

Max will be ~6 hours. Those are monster batteries, but the 5100 uses a desktop CPU which eats batteries much faster than a mobile CPU.