@
greywolf74 I ended up using a 50R 1/4W watt resistor on my 5v line - it's essentially dissipating 1/2W but didn't go up in flames hehe.
Also this arrived,
While I was keen to shave a bit off on weight with it, I realised I'm giving up a good ~4,000mah compared to my current 2x 2S 4,000mah = 4S @ 8,000mah config. It was also silly to go for a 4.5 rated Lipo as my charger can only charge in steps of 1,000mah.
I doubt I'll get much out of this pack, although it may serve to be adequate as an 'emergency' backup brick.