Xiaomi Mi Notebook Air Adapter Charging and Compatibility Review

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Xiaomi released Xiaomi Mi notebook Air on July 27, now we got Xiaomi mi notebook Air 12.5inch version. We care about Type C function, so power adapter and notebook charging specs become the priority that we pay attention to. The power adapter shows 5V/2A,12V/2A,9V/2A,15V/3A,20V/2.25A, and largest power rate  45W, but in fact, communication protocol in PDO database, 20V is 2.20A ,not 2.25A. The notebook claims 20V 2.25A Max input. When we connect power adapter and notebook, the test result shows 20V, 2.0A, 40W power in 69% electricity. These are the  charging and discharging functions of Xiaomi mi notebook air. Let’s analyze its features.

Related: Xiaomi MI Notebook Air 65W USB-C Portable Power Adapter Released Officially

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Xiaomi mi notebook Air input specs

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Xiaomi notebook original adapter charging specs by LDR-PD01 test 

First, Output is the fixed cable and Type C port.

The main difference from apple, Letv in power adapter is that Xiaomi notebook power adapter doesn’t come with Type C itself, but use the cable to connect Type C like Google.

For a customer, we really hope Xiaomi mi notebook air can be designed like Apple Macbook, because there is an extra C-C cable to use, not only charging, but also connect phone with type C, mobile hard-disk, etc.

For a manufacturer, a fixed cable and Type C port will be much cheaper way.

Second, the output gear is special.

Xiaomi notebook power adapter has 5 levels which are one of the most USB PD power adapters.The highlight is that the first three level voltage has the corresponding current like 2A,  15V, 3A,  20V, 2.20A.

In general, the first three gears can all support 2A, but taking cable damage into consideration, it can reduce the cost of cables. But the fourth gear can support 3A, which means the cable prepares for 3A current.

So the first three gears can also support 3A.

Third, PDO transmits in different ways.

Xiaomi notebook adapter doesn’t send 5 level PDO, but send a PDO of 5V/2.0A. But let others work first, then recognize the equipment by VDM to provide the corresponding output power option.

For example, if it met Apple Macbook, it sent 15V/2A PDO.  If not, it sent 5 gear PDO.

To be strict, this kind of way is not recommended by USB PD.

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Xiaomi original power adapter agreement analysis result by LDR-PD01 and LDR-PD02

Above all are the main features of Xiaomi power adapter, so let’s move to Xiaomi mi notebook air Charging compatibility.

Test result about Apple 30W, Google 60W, Huawei 24W, Microsoft 15W four adapters for Xiaomi mi notebook air charging.

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Notebook compatibility test

According to the test sheet, Xiaomi mi notebook air power up to 40W, is higher than Macbook and Matebook, considering battery capacity and charging power. In these products, Xiaomi shows the fastest charging speed.

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In terms of charging compatibility, Macbook and Chromebook shows best,  they can charge from 5V to 20V freely, then Matebook can charge from 12V to 20V freely, Xiaomi mi notebook air ranks the last one, it can charge only over 20V/12A.

In theory, Macbook and Chromebook are the leading products, they have wide range Buck-Boost in Power supply path management, which can be very good adaptive to power in adapter. Matebook only has Buck no Boost. So it can not be compatible with low voltage charging.

The reason that Xiaomi mi notebook Air shows worse compatibility is that it only has 4 series battery, full voltage is 16.8V, and it only has buck no boost, so it can only use 20V charging. Namely, in order to improve the charging speed, they has reduced the cost and compatibility.

The test power adapter is LDR6021 60W which adopts COOLMOS technology, compact size. So we can see small size, high power, high compatible Type C power adapter will be the key to win.

In fact, LDR6021 and LDR6022 as key power adapter can not only output the fixed five gears, 5V/9V/12V/15V/20V, but also pass Get_Sink_cap order, obtaining the dynamic power supply requirements of electrical appliances,construct the same PDO, achieve 5 v ~ 20 v / 0.1 A ~ 3 A arbitrary constant voltage or constant current output,  realize intelligent power supply based on USB PD.

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Xiaomi 45W Adapter (Left)  LDR6021 60W Adapter (Right)

According to the analysis, we can know Xiaomi Mi notebook Air takes priority to charging speed, and requires the power adapter up to 20V/2A, we believe they will provide more solution about charging speed and compatibility.

Update on May 29, 2018

Start date End time prodcut name deal price Link on Coupon
5.29 Xiaomi Mi Notebook Air 13.3 – SILVER 8GB + 256GB + HD GRAPHICS 620 GBXM13GW5 699.99
5.29 Xiaomi Mi Notebook Air 13.3 – SILVER 8GB + 256GB + HD GRAPHICS 620 GBXM13GW4 699.99
5.29 Xiaomi Mi Notebook Air 13.3 – SILVER 8GB + 256GB + HD GRAPHICS 620 GBMAYCO19 699.99
5.29 Xiaomi Mi Notebook Air 13.3 – SILVER 8GB + 256GB + GEFORCE MX150 GBAIR13GW4 699.99
5.29 Xiaomi Mi Notebook Air 13.3 – SILVER 8GB + 256GB + GEFORCE MX150 GBAIR13GW5 699.99
5.29 Xiaomi Mi Notebook Air 13.3 – SILVER 8GB + 256GB + GEFORCE MX150 GBMAYCO18 699.99
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15 Comments

  1. Hello,

    could you do a test for the charger of the Xiaomi Air 13.3 please?
    I want to get a secondary charger and i want to know which charger supports the Xiaomi Air 13.3.

    Best regards

      • Hi,

        thank you for your answer.
        I already tried with various chargers and power banks. Some of them were Quick Charge 3 chargers. So they are capable of 5V/3A and more e.g. 12V/1.5A. They don’t work. And in your test, the xiaomi air 12.5 only supports 20V/2A. So why would the bigger version the xiaomi air 13, which has a 65w charger, support 5V/3A =15w or even 5V/2A = 10w?
        I want to know, if there is any compatible charger avaiable at the moment.
        I’m pretty sure i would need a charger with 20V/3.25A, but i could’t find one yet.

        Best regards

  2. Hi,

    Could you please do the same test for 13 inch model if possible ? I want to buy a power charge replacement for 13 inch model but I can not be sure if 60W adapter will be sufficient or not..

    • Adam BROWN

      Hi SECKIN, mi notebook 13inch supports 45w 2A/20V charger, right now there is no one manufacturer to sell it, because Xiaomi has its own original power charger. We highly recommend using the original charger. Because you spend a lot of money to use a non-original charger, if there is anything wrong, no one will pay the cost. Hope you can understand.

    • Hi,

      i found a good replacement for my xiaomi air 13 notebook charger.
      The original charger has 65W and my replacement the iVoler 75W USB-C charger support 60W on his USB-C Port. So pretty much it is almost as good as the original one.
      The original charger has 20V/3,25A and the iVoler can output 20V/3A.
      I can confirm it works with my xiaomi air 13 and it seems to be equally fast.
      I had no issues with it yet, but i read some concerning rewiews about the quality of the iVoler charger.
      I hope i could help

      Best regards

  3. Hein Htet Soe on

    Hello.
    I would like to buy the original adapter.I’m from Myanmar,in our country it cant find what should i do.

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