It is recommended to use Docks as you do not use flaps and the waterproffness will remain more efficient. Mine from 10% charge to full in 2 hours. Don't know if Dock from Z it's compatible, just try it, it have nothing which will damage your phone, if the pins are compatible then use it.
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My Evolution: Sony Xperia Z1 - UB + 4.3 Rooted + Deodexed, HTC HD2, HTC Diamond 2, HTC HD Blackstone, Nokia 7070 Prism, Qtek 9100, Nokia 3100, Motorola T720i, Nokia 3310, Sony Ericson PF 768 (Blue)
How Get Root on Sony Xperia Z1 with Locked Bootloader and the Latest Android 4.4