Hi all , I am seeking a spare battery for my 7Dmkll , after hearing all the horror stories of dodgy Canon Batteries even being sold on Amazon as genuine , where is the safest place to buy GENUINE Canon Batteries ? Seen them on amazon @ £63.95 , it does not mention genuine but does say by Canon , Wex has them up @ £74.99 and the Canon Uk store has them @ over £80 . Any recommendations ? They are expensive batteries .