Something that is always a concern to laptop users, PDA users and Smartphone users is the lifespan of the battery. I found this unique benchmark utility which records the battery discharge rate while under full load.
After letting it run for 45 minutes, you can see that there is a steady and consistent discharge rate, and based on the above graph the battery would most likely be completely flat after about two hours running at FULL load. This however rarely happens and so the U60 UMPC device should give you roughly 4 hrs uptime without needing a charge.
PRICING: You can find products similar to this one for sale below.
United States: Find other tech and computer products like this over at Amazon's website.
Australia: Find other tech and computer products like this over at PLE Computer's website.
Canada: Find other tech and computer products like this over at Amazon Canada's website.