Re: The big red button
http://www.cpspowertech.com/c14.html
Interesting.. Under "Backup Extendibility" , for the UPS column they list "Additional costs for unnecessary parts" (wonder what they mean by that?) but for their own device they just list "Yes". So they give you extra battery capacity for free?
Would be neat if there's a standard plug on the back of it that'd let you plug into an external battery pack, esp if it works at standard voltages..