I use an Anker IQ 10000mAh - I’ve had it a while so there will be newer stuff out there, but it was well reviewed at the time. It weighs 180g which is pretty good for its capacity. It will recharge my iPhone at least three times (the SE is quite small battery capacity but has a smaller screen than most so it’s battery life is good). I use it in flight mode most of the time and make sure that there are no unwanted apps running in the background to maximise battery life.

Thanks for the info :relaxed: