Thank God somebody else asked 

doontheroadarab wrote:

Just found out if you use the EE network you can get a free power bar by sending a text to 365 and texting  the word power, just done it and got a text back saying  to any EE shop with the code they sent and get a free power bar,
going to pop in this afternoon

Nice freebie I got this afternoon, you can recharge it or go to any EE shop and swap it for a fully charged one as many times as you like, itwill be  handy for me when i'm travelling and watching football on sky go or BT as my I phone always runs out of charge before it's finished !
Seemingly holds enough to charge your phone up to 100% so if you're a EE, T-mobile or Orange customer you can get one free