Powerbank for (Mid 2012) MBP

Hi. I am looking for a way to get a powerbank for my Macbook Pro (mid 2012) version. I tried finding an older type powerbank with the "L" shaped MagSafe input for charing, but had no luck. Then, I searched for a powerbank with a socket input so that I could simply charge through my original charger. This proved difficult, because I live in Norway and we only use 230v F type sockets. I managed to find one such powerbank (Yeti 150), but that monster weighed over 5kgs...

Does anyone have any suggestions as to how I can accomplish this? Tips to new ways to charge my macbook from a powerbank will be appriciated, as well as different powerbanks I havent managed to find. Thank you.