Although ChargerLAB is focused on all the power-related products, the fast-charging is always the one we care about the most. Nowadays, the power for smartphone charging can be up to 240W, but there's a misunderstanding among the non-geeks, that is, as long as you're using the built-in charger, you can get the maximum charging power. Well, we're here to prove them wrong - cable matters!

Introduction

First, let's introduce the equipment for the test.

The KM003C's screen size has increased from 1.3 to 1.54 inches, and four buttons on the side have also changed from golden to silver. Except for that, the UI color has become more vivid and dynamic.

Besides the tester, we also use the Lightning cable, iQOO 120W charger, Xiaomi 120W charger, Huawei 40W charger and their corresponding cables.

Tests

Next, we're going to test and charge with those cables.

Data Transmission

Use the POWER-Z KM003C to read the E-marker chip info of the Xiaomi dual USB-C cable. It shows that this is a USB 2.0 cable and supports 20V 5A.

Use the KM003C to read the E-marker chip info of the IQOO dual USB-C cable. It shows that this is also a USB 2.0 cable and supports 20V 5A.

Use the KM003C to read the E-marker chip info of the Huawei dual USB-C cable. It shows that this is yet another a USB 2.0 cable and supports 20V 5A.

Power Transmission

Using a knockoff Apple USB-C to Lightning cable to charge the iPhone 14 Pro Max. The power is 12.26W, which is far from the normal fast-charging power, and the phone will show a pop-up alert and charge intermittently.

Replace the cable with the original one. The power becomes 26.27W, which reaches the fast-charging power.

Using the iQOO 120W charger with a Huawei 6A cable to charge the iQOO Neo7, the power is 31.63W, which is far from the charging experience with the original charger kit.

Then, replace the Huawei cable with the IQOO one. The fast-charging UI can be shown correctly, and the power reaches 106.4W.

Using the Huawei 66W charger with a Xiaomi 10.5A cable to charge the Huawei Mate 40 Pro, the power is 24.3W, which is also far from the charging experience with the original charger kit.

Next, replace the Xiaomi cable with the Huawei one. The fast-charging UI can be shown correctly, and the power reaches 49.3W.

Using the Xiaomi 120W charger with a Huawei 6A cable to charge the Xiaomi 11 Pro, the power is 19.89W, which is also far from the charging experience with the original charger kit.

Finally, replace the Huawei cable with the Xiaomi one. The 67W MAX can be shown correctly, and the power reaches 39.5W.

Summary of ChargerLAB

The proprietary protocol such as the SUPERVOOC, FCP and FlashCharge can surely provide us with the fastest charging speed, but you always need the special cable for that. With the brand new POWER-Z KM003C, you can easily find out the power transmission capability for your cables and see if the charging power actually live up to the promise.

1. E-Marker Chip Detection | The New Update of POWER-Z KM003C
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3. Auto-Rotation | The New Update of POWER-Z KM003C