I have problems with euro charger. Even with original cable charge is very slow. Ampere app shows under 1A. Original charger is declared 5V 2A. Is it even possible to go over 1A with only 5V? I think that micro USB contact pins are too small. I can test with more voltage to USB port, but I don't know anything about these quick charge standards. Can anybody confirm that BV6000 can take higher voltage than 5V on charging cable?

BV6000 supports Pump Express. This is a different standard than Quick Charge!
BV6000 comes with a cheap 5v/1A charger though!

Do not name it "standard"

My first BV6000 (one of the first from factory) was delivered with the old 5V 1A charger
known from the BV5000.

My second BV6000 comes with the BV60 9V charger and is charging with up to 12V 1,2A.

Quick Charge (Qualcom "standard") does not work.

Mediatek has an own charging "pump up/ pump up plus".

E.g. a Meizu UP1220 does the job with 12V.

The Infinix charger works well for those who also received the 5v/1A charger:
http://s.aliexpress.com/ERR7jQfm

So if I understand correctly, charger must communicate with phone for higher voltages? Can I just feed 7, 9 or 12V to USB port?

No, charger and BV6000 need to negotiate first using the Pump Express protocol. The voltage depends on how empty the battery is.

Anyone found a Pump Express car charger on Aliexpress?

Thanks everyone. I ordered Pump Express charger.

Anyone found a Pump Express car charger on Aliexpress?

I would also be interested