Don't worry, it works. Some of the forumer even uses iPad charger which is rated 2000mA to charge their XZU 

Nah it won't. I been charging my XZU with HTC One charger. It's all good although it charge much slower than the original charger which is rated 1.5A

If you worry about such, than stick to original charger/cable
As for me I am using my ipad 2.1A charger and it charges it full from about 5% in about 2.25 hours
Spoiling the phone/battery never even occur to me and I have been faithfully using my ipad charger to charge all my phones for past 6-7 years already !!!

Why you ask me to "chill". You want an opinion and I am giving you an honest one. I am telling you very frankly. If you have any doubt use back original charger/cable. DO NOT listen to us who tell you is safe - it is your phone not ours...

I "mad " ??? Why you say so
If you have been following my postings, that is always my style - straightforward and right to the point. Sorry don"t expect too much good manners from me as I am not known for that

Use stamina mode
Disable any active refresh of data that you don't need. You need check each of your app that does that
With these easily you can have 6-7 hours SOT

managed to drop by lowyat plaza to have a look at the sony promotion.
i was quoted RM1500 to trade in my htc one, and they now include :-

1) sony bluetooth watch
2) sony casing
3) if pay cash can get 32gb mem stick, otherwise 16gb
4) front AND back screen protector
5) sony t shirt