Upgrading Laptop d820 question?

I have a latitude d820 and the battery doesn't last very long... I want it to last for as long as possible... the only thing I can find is the stuff listed on dell which has a 9 cell and lower, is there anything better then these? Also I know this should be under the other forum part but it's so hard traveling with this laptop is there a case that could hold a laptop, canon camcorder, small digital camera, zune, and all the cords I need without having so many issues when it comes to airplane travel? Thank you =)

 

How about picking up the modular battery?

 

You can buy what ZAZ suggested, and than you can try undervolting. Undervolting basically restricts the extra current flow to your cpu, making the cpu perform more efficiently. This does not result in any performance loss. Most cpu's are very voltage tolerable, so restricting some voltage will make the chip still perform the same, just more efficiently.
Many people have followed Flipfire's Undervolting Guide, and many gain an extra 20 minutes from their battery life.

For a laptop bag, you may want to get a large comfortable messenger bag, like one for a 17" system, or one of the larger Targus bags. If these are still too small it may be beneficial to just buy a backpack for your computer and multimedia gear.

K-TRON