How about other phones – information from anyone or the phone manufacturer would be highly appreciated.
I came across a charger issue provided by ZTE with axon 7 mini (white color wall charger). I compared the issue with ZTE black color older wall charger.
White charger has some kind of voltage retention (perhaps a capacitor that does not discharge) even after the charger is unplugged from the wall, so it impacts charging next time , instead of charging phone it discharges the phone battery.
Black wall charger does not retain voltage after unplugging from the wall and does not discharge the battery at the next charge cycle.
I used a usb LED light to find this out, by connecting it to both chargers after unplugging from the wall. LED light flashes momentarily on white wall charger and turns off after capacitor fully discharges.
In black wall charger LED light does NOT turn on.
Published by myself
KHALID MAHMOOD
Monthly Tenant (in this building since 2017 May 2017- almost 4 years – I was trapped to rent in such a building)
خالد محمود ھملٹن اونٹاریو کینیڈا
M01684340561220
Plus code 87M265J2+76
Ph:(289)990-6590 / (905)865-9379
2-671 Fennell Ave. East,
Door #2 on the Upper Floor,
Hamilton Ontario L8V 1V3 Canada
(correct postal code for my address as assigned by Canada Post is L8V1V3, it is NOT 3J3).