My favourite USB battery power Pack
This is the excellent USB power pack I use when I travel.
2 x 2.1amp outputs. 8400mAh capacity.
Two digit Led display shows battery level
What SD CARD should I buy?
If you want an SD Card for your camera - these are the ones I use and recommend.
I'd strongly recommend not to buy any SD cards off ebay - I've heard about too many issues with counterfeit cards - often sold on by unwitting resellers. My inbox regularly gets messages from people who bought a £150 camera then cheaped out and bought a £3 memory card on ebay - Then when it doesn't worth they blame the camera! It doesn't make any sense. Good memory is cheaper than it's ever been - see the links above.
A lot of HD cameras will not work properly with cards larger than 32GB (cards over 32GB are usually SDXC rather than the SDHC standard used by 32GB cards. SDXC cards use the ex-FAT system rather than FAT32 - in short they are a different standard). - so don't just buy the biggest card you can afford - read the specs in the manual to see what it accepts.
VERY IMPORTANT. These links go to the product, but Amazon have three different ways of selling. There's Amazon Direct - This means that you are only dealing with Amazon themselves, then there's other sellers that use Amazon's facilities - these show as Fulfilled By Amazon and finally there's Market place sellers that advertise on Amazon, but operate independently. I strongly recommend that you only use the first...the Amazon Direct - Sold By Amazon option. Even if it appears that you are paying a couple of £/$ more it is more than likely you are comparing the going rate for a real item against the price of a fake one that won't work.
As an example of the extent of the problem of fake goods online...In a recent survey by Apple - 90% of the 'Apple' chargers sold by Amazon - using the other the two methods..which includes the "Fulfilled by Amazon" option - were found to be counterfeit....90%!
UK & US LINKS & PRICES BELOW
CLASS 10 UHS-1 CARDS (For HD Cameras)
U3 CARD (For 4K cameras)