UK source of PinePhone batterys?

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Looking around there seems to be a lot of uncertainty (and of course Pine64 can't ship outside US). If anyone has found a trustworthy source (capacity/volume/dimensions/chip(etc)) please share. Thanks...

This should be fine Amazon

I've heard that some can be a bit bigger, but apparently the J7 2015 battery's should work nicely in the PinePhone.
I've heard people talking about shaving down the bigger ones, but I hope that this ones small enough that you don't have to do that.

Forum post

Thanks PhoenixLandPirate, I had looked at that - it only takes a few negative reviews to put me off... I wonder how many people are getting PinePhones in the UK and whether that number might make it worthwhile supplying a bunch of batteries to someone to redistribute?