I bought on Jan 18 an Asus UX330UA-FC093T ZenBook 13.3 512GB i5 for £800 with a claim of a battery of 12h "the best in the market".Just over one year the computer has hardly 2h battery ussage and I have to constantly recharge. It won't even last a longer meeting or any European flight. I called the customer services, an unpleasant agent that I have to send the computer to a third party which you won't guarantee, pay for a new battery, for replacement but no guarantee that my data won't be lost nor that the new battery would last longer than 2h in another year or so.I wrote to complaints department and they addresses me with Dear Sir/ Madam with a message which looked written by a machine rather than a human brain. They told me that Asus is Sorry that my 12h battery computer won't last even 2h after just over one year. These people are laughing in your face after they take your money on false performance claims Stay away from Asus and believe what the rest of the people here said as I have been through it Hope I helped someone from disaster with this post