[Zopo Speed 7 Plus] jockyw2001:
EDIT: For those who don't like to read here is a short summary. The Speed 7 and Speed 7 plus do support "Pump Express (PE)". With the attached modified little kernel and boot image for the stock Android 5.1 rom and with a stock charger, you can shorten the charge time by approximately 30-40%. An other MediaTek quick charge variant called "Pump Express Plus (PEP)" is not supported. I am now using my own PE mod since almost 2 months and am very happy with it :)

Here starts the original full story text:

Last year MediaTek announced their Quick Charge solution called Pump Express & Pump Express Plus:

http://www.mediatek.com/en/features/power-management/pump-express/

My Zopo 7 needs about 5 hours to fully charge when it is down to about 7%, so I tried to find out if Pump Express could be a solution.

A reasonable well explanation of Pump Express can be found here:

http://gadgetstouse.com/gadget-tech/mediatek-pump-express-charging/44855

And here is another document which compares QC and Mtk quick charge mechanisms:

http://www.panjit.com.tw/upload/en/product_app/6_product_app_file_1.pdf

It also mentions that the MT6753 chipset inside the Zopo Speed 7 does in fact support "Pump Express Plus". I then wondered what is further required to support it and I found one needs a battery charger with a charge controller ic such as the ones described here:

http://www.dialog-semiconductor.com/sites/default/files/mediatek-pump-express-adapter-solution.pdf

Such a battery charger is capable to deliver different power stages to the phone depending on what it senses on the USB VBUS supply line. An example of such a charger is this one:

http://de.aliexpress.com/item/In-St...Halo-H3-Quad-Core-4G-LTE-5-0/32285686209.html

I haven't tried such a charger myself yet and I would be very interested to hear if someone.

EDIT1:

In this Zopo support forum the administrator replied possibly the motherboard charge circuit limits the current. I want to verify if that is indeed the case and ordered a mediatek "pump express plus" compatible charger and will test it with my speed 7:

https://www.coolicool.com/original-usb-quick-charger-for-bluboo-x550-smartphone-g-41028

EDIT2:

In the stock kernel config the pump express options are not enabled, so I will have to build a new kernel or "borrow" a boot image from another device where it is enabled.

EDIT3:

I flashed a boot.img from a Ulefone Power stock rom. The Ulefone also has a MT6753 and supports pump express plus (pep). Unfortunately, my zopo doesn't boot up. So must build a custom kernel with pep enabled.

UPDATE1 (24/03/2016):

I have built a boot image and a little kernel (lk) with "Mediatek Pump Express (PE)" support for Zopo Speed 7. After I receive my "Pump Express Plus (PEP)" compatible charger I will also build a boot image and little kernel with PEP support. PEP software support depends on the charge chip that is built in the charger, so I need to open that charger to figure it out. I have just measured whether my phone charges quicker and indeed it is a lot faster now with a 5V/2A charger (see below). Everyone with a Zopo 7 and knowledge how to flash lk and boot images is invited to test. Of course I cannot be blamed or held liable if you damage or brick your phone with the attached software. My phone works fine with it.

I monitored charge percentage level and started charging with the phone powered on at a level of 15%:

17:45 15%

17:52 17%

18:09 28%

18:15 32%

18:45 50%

19:15 68%

19:45 87%

20:07 100%

That implies from 0 to 100% in 167 minutes which is less than 3 hours! Before, with the same charger it took 4-5 hours :)

The charging is a perfect linear curve and that is, as I understood it, exactly what Pump Express is supposed to do. I am hopeful Pump Express Plus can work too. Lets see in a couple of days when my charger will be delivered. To be continued ....

EDIT4:

I have done a cross check with the original boot.img and lk.bin: charging takes 2:20 minutes per 1%. With my Pump Express (PE) boot.img and lk.bin it takes 1:40 minute per 1%. So a full charge with my kernel built is almost 30% quicker :)

UPDATE2:

Added Pump Express (PE) enabled boot.img and lk.bin for the Speed 7 Plus (I own a Speed 7, so I can't test these files). Make a full backup with TWRP or CWM recovery and then try it out.

UPDATE3:

I received information about the charger hardware of the Speed 7 models directly from Zopo (thanks Charles Bird !): unfortunately the hardware does not support switched chargers and therefore also no Pump Express Plus :(