Xiaomi has recently released their new smartphone, the Redmi Note 2. This new model comes with a 5.5-inch 1080p resolution display, and is powered by a Mediatek 2.2GHz 64bit Helio X10 Octa Core cpu with 2GB of RAM,3060mAh battery; It also comes with MIUI V7 (base on Android 5.0).
The power adapter for redmi note 2 is 5V/2A, and it also comes with 3.9ft (1.2m) micro usb cable.
We have got this device for few days, and busy testing the charging performance. We test with the original chargers, the tronsmart charges (wall charger and car charger) , and also the charger which support Mediatek Pump Express Plus.
Here are some simple results base on our test:
1)Total Charing time from battery 0% to 100% is 2 hours 10 mins with stock power adapter and stock usb cable. detail table is here:
| Time | Battery |
| 11:00PM-11:10PM | 0%-10% |
| 11:10PM-11:30PM | 10%-25% |
| 11:30PM-12:00PM | 25%-52% |
| 12:00PM－0:30AM | 52%-78% |
| 0:30AM-1:00AM | 78%-96% |
| 1:00AM-1:10AM | 96%－100% |
It can get 10% power in 10 mins charging, and 52% power in 1 hour. In 1.5 hours, it can get 78% power.and in reset times, it can get battery from 78% – 100%.
2) Redmi Note 2 don’t support Qualcomm quick charge or Mediatek Pump Express fast charge, and even Xiaomi offer 5V/2A power adapter, but the max charging current is just 1.38amp, and total charging watt is lower than 10W. see the photos here:
(for reference, the Oneplus Two also have 5V/2A charger, the charging current can reach 1.9amp and total charging watt is 10W., We also use the oneplus two charger to charge on redmi note 2, same result, max charging current is just 1.38amp) .so the problem is not the charger, maybe xiaomi lock the charging current in the software? for heat? for safe? or other reason?
Here is the photo for the stock charger:
and then we test with our wall charger and car charger, here is the information:
(1) test with one port qc2.0 wall charger
(2) Test with 3-port USB wall charger:
(3) Test with dual port usb car charger:
(4) Test with 4 port usb car charger
From the above test, you can see, all of our chargers can offer same current as the original xiaomi charger.
But the redmi note 2 can’t accept more current than 1.4amp. All of our chargers’ usb port can offer 2.4Amp charging current, however, redmi note 2 just can accept 1.4amp.
So if you are looking for some back up wall charger, and new car charger for your Redmi Note 2 smartphone. Our Tronsmart Charger series should be your first choice.
Some tips about charging speed:
The charging speed is decided by three part:
(1) How much current/volt the smartphone can accept?
(2) How much current/volt the charger can offer?
(3) Which usb cables are you using?
Please make sure to use the high quality usb cables, our tronsmart usb cables are all 20awg, can delivery high current.
Any questions about Redmi Note 2 charging, feel free to contact us.
Tronsmart
—— From Tronsmart
