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Passport does support kind of Fast Charging
Passport charging remained bit enigmatic for me after both of my Z3 and Passport chargers were toasted. First I just wanted a 1.3 Mah replacement charger but Blackberry India wont stock any for love or money, period.
Off I went for a Sony Cp-Ad2, 2.1Mah 5V tablet charger but I couldn�t use it on the limited space of my wall socket along with other peripheral plugs being there. However it did charged at around 0.9 Mah with supplied USB cable and dropped to 0.75 Mah with original Passport USB cable.
Another of Sony Charger Ep-880 rated at 1.5 Mah I could use in limited space of wall socket worked ok but it took almost 4 hours + to charge from 10% to 100%. This charger had ferrite beads on USB cable and it turned out it was charging between 0.5 Mah to 0.7 Mah. With original Passport usb cable it charged consistently at 0.75 Mah which was surprising because my lowly Z3 was able to draw higher amp from either of chargers while Z3 was supplied with only a 0.85 Mah charger whereas Passport one was rated at 1.3 Mah.
When things just got this murky I bought a cheap USB amp meter to try and understand what�s going on. The findings about how much amp each of chargers was flowing is what I got from the amp meter. So apparently Passport will not draw more amp from beyond average of 0.8 mah from any of 5 V charger even if they are rated at 1.5 map to 2.1 amp and also different USB cable gave different reading. (I am aware of sync and charge or charge only USB cables are out there).
On-line search led me to Aukey quick charger 2.0 for Amazon but I had to pay silly money to import one to India with no guarantee that it will charge Passport to its rated capacity of 1.3 Mah. I had to hit the local market and Samsung showroom guys were sympathetic to the woes and agreed to let me test their chargers from sealed boxes. One charger did work and worked rather surprisingly well for me.
So there it is, Samsung EP-TA20IWE Travel Charger for galaxy 6 with �Adoptive Fast Charging� rated at 5v 2.0 Amp Or 9V 1.67 Amp. I plugged it with 33% battery remaining and in nearly 1 hour I am at 85% charged battery. Back of Passport is cool and doesn�t seem to be overheating. The amp meter shows a consistent amp being pumped from 1.75 Mah to 1.85 Mah per hour. So it does look like that Passport�s Qualcomm support some kind of faster charging, which is good news. Seems very mundane stuff but charging Passport for 4 hours was simply unacceptable and I hope it might help people in similar quandary or looking for a faster charger without having to pay for a playbook charger.
Sammy charger I got was for $ 18. Here is a picture when Passport is plugged and 70% charged.