This morning the big two airlines in Australia , Qantas and Virgin banned the on board use and charging of lithium power banks, (and limited passengers to 2 each onboard)
https://www.stuff.co.nz/travel/360894527/two-australias-biggest-airlines-ban-use-power-banks-flights
And unsurprisingly it has now been confirmed it is a network wide policy for the Qantas group , so will also apply to Jetstar NZ from 15 December,
https://www.rnz.co.nz/news/national/579627/jetstar-flights-to-ban-use-of-portable-power-banks-on-all-flights-air-new-zealand-looking-into-it
But until AVSEC change their rules, Jetstar's requirement of ""It needs to be within easy reach" will simply be unenforceable as there is no way the airlines can check if your bag in the overhead locker has a powerbank in it...

