Laptop batteries?

[yahn]

How much longer will a 9-cell Primary Battery and 9-cell additional Lithium Ion Battery than a 85Whr Lithium Ion Battery (9 cell)?

Is it worth another 80 dollars?

 

[brian]

Its jsut adding a new battery. so twice the time. I would say it would be about 6 hr total compared to 3 hr. the catch is you have to swap the batteries. So turning off your comp and changing the battery

 

[yahn]

Is that difficult to do at all?

 

[nffc10]

No, all you have to do is get a small philips screw driver and un screw the screw and slip the battery out and place the other one in.
Sometimes you can just slide the cover off though.

 

[Geoff]

They are the same thing, just for $80 more you get a second battery, which is worth it IMO.

It's insanely easy to replace, you just move the slider and take the battery out.