Topic: Additional Battery Power for laptops

[Gedit]

I searched for this and found nothing. Apologies if I'm search-challenged ...

I ran across a back up battery solution that's cross-platform for many laptops.

http://www.valence.com/ncharge.asp

I'm running a Dell Latitude D800 and even with two internal batteries I'm limited to 6+ hours (okay for a one-off club act but sketchy for two days at Langerado camping). The N Charge powers the laptop and/or recharges its batteries depending on how its connected. Pretty nice. It's also very slim (about half an inch) and has a smaller footprint than the laptop itself so it fits right in the same carrying bag.

[mmedley.]

Back in the day when I used a laptop I had one of these. 

http://batterygeek.net/

I ran a VERY powerhungry laptop...Sager 5690....and it gave me almost 3-4 hours on top of the dual battery laptop setup I ran (about 2 hours). I would bet a D800 could run close to 9-10 hours with full charge on both batteries.

[stirinthesauce]

Here is a cheaper alternative.  I have one of these but have yet to actually test the run time.  But for the price, you could stock up on several.

http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=986