Went to Halfords, after dismantling my glove box because the little switch thing that allows it to drop down away from the fuse box doesn't work, I wonder if this was caused by halfords when they did the install, who knows, could have always been that way.
Anyway after removing the glove box still couldn't see where the magic pro was installed, so another guy came out and said it's probably in the passenger door under the trim, to which point the guy said oh I was looking for a battery??!
Anyway he lifted off the trim on the passenger side and there was the box, hanging free, inside the dash / passenger side.
Checked to see that the light goes off when ignition goes off which it does, so that ruled out.
Noticed it's set to kill the power when it drops to 12v, I said I would like that changed so it's 12.5v, which was then met with well...you know.... I wouldn't do that because it could cut off the camera while driving if you battery is knacker, the alternator may pause the battery charging when you are breaking etc and it could drop below 12.5v and cut the camera out while driving.
I'm starting think he doesn't know what he is talking about, he already spent 10 minutes thinking a magic pro, was a battery backup.
The camera is powered by car battery when you switch the car on, when you switch the car off, the camera goes into a parking mode and it is at this point the magic pro is checking voltage drop and disabling the camera if it goes below either of the limits you can set it.
Anyway he made the change and repeated his warning, then put the cover on. I said to him the magic pro is suppose to be installed within driver reach so I can switch the device on or off to make it easy to disable.
His answer was, well all you need is a credit card and you can just pop the side of the dash off and then access the box and switch it off, there is nothing holding the side paneling in apart from clips slide a credit card in and it won't scratch anything. This I found ridiculous workaround for something that has been installed in the wrong place, I will write to halfords about that, the staff are idiots.
Anyway, I'm trying the setting out on 12.5v now, I noticed that as soon as I turned the ignition off the blackvue camera went off, because battery was low, I think the blackvue magic pro is installed correctly and doing what it should when it should and I actually have by the sounds of it a battery that is on the way out, since the battery ran flat i've not been able to get the start and stop to become active despite putting some miles on, so that I guess is a tell tale sign, so I think give till after xmas if things don't improve after a few more drives it's new battery time. The link that was posted on here for the bosch battery is probably the best and a great price!, so thanks for everyone's help on here.