This is a great product when it works. But less than a year and the battery goes kaput and then the wifi card comes loose and I had to open up the case to re-insert it back in its slot. Then the fan went kaput after 18 months.
The original HP battery cost Rs.5000+ and the fan Rs.2000 + so I used OEM parts from China with a battery life double the original HP one that came with the notebook and same with the fan both at less than half the price of the original HP spares. Battery backup was 2 measly hours with the original but the Chinese 7500 maH battery gave me 12 hours of up time.
WoW. Its two years now since I last fixed the battery and fan yet both work great. Service and support for HP products is great but be prepared to shell out a lot of green for one small pocket of an HP branded screwdriver.
The book is light and for office, camping and particularly backpack use- is perfect. In the wild I use this with a 100W solar panel and works perfect.