BG161653415 I just bought these in England for £20 less. Just Google drone shops in UK and you should be able to find it easy enough, there are only about 4 shops lol it is one of the main ones if anyone is interested

BG161653415 have a look on flea Bay as there are usually people selling 3d printed sets. they are exactly the same as the impulse apex ones as this is a clone of that

BG161653415 20 quid cheaper online in England.

BG161653415 no separate pdb as you don't get them with fc's any more really, it's all built in. Yes to vbat, but it is called vcc.

BG161653415 you can but there aren't many uarts so finding a spare one can be tricky if you need them for everything else. I recommend an f7 flight controller if you need more uarts as they usually have 5 of them instead of 3 or less on the f4 fc's.

BG161653415 yes, a 2.5inch ssd will fit in the hdd bay. mechanical hdd's and ssd's are both hard drives and are interchangeable as long as you buy the sata versions. same fixtures and everything.

BG161653415 m3

BG161653415 only in the pictures. well, I got the 2750kv ones and they aren't unibell, but don't know about the other ones