Introduction

Not long ago, Xiaomi released the Ultra version of the K70 series, which features MediaTek's latest flagship processor, the Dimensity 9300+. This processor offers impressive energy efficiency. In terms of charging, the device is equipped with a 5500mAh battery and supports 120W fast charging.

About half a year ago, we released the ChargerLAB Compatibility 100 video for the Redmi K70 Pro. This time, we will see if the Ultra version has also achieved "Ultra" compatibility.

Compatibility Test of Redmi K70 Ultra-Chargerlab

Charging Compatibility Test

Next, ChargerLAB will conduct the test, evaluating its compatibility with a selection of more than dozens of charging devices, including both chargers and power banks, aiming to cover the majority of users' charging scenarios.

Original Chargers

First, let's look at the benchmark performance. Using the original 120W charger (model: MDY-14-ED) in combination with the ChargerLAB POWER-Z KM003C, the measured charging power was 17.71V 5.62A 99.45W.

Switching to the Xiaomi 45W pudding charger, the charging power dropped to 8.23V 4.21A 36.64W.

Testing with chargers of different power levels, the highest charging power was around 99W. Apart from the Xiaomi 33W and Xiaomi 45W pudding chargers, most chargers triggered a voltage above 15V, successfully activating the Xiaomi fast charge protocol. The compatibility is excellent.

Creating a bar chart of the various charging powers, it can be seen that the Redmi K70 Ultra, when paired with its original charging kit, has charging powers ranging between 23W and 100W, providing an excellent experience.

Third-party Chargers

Using the Anker 65W charger to charge the Redmi K70 Ultra, the input power was 7.90V 1.60A 12.63W.

Switching to the SHARGE 100W charger, the power increased to 16.62V 1.60A 26.64W.

Summarizing the third-party charger compatibility test data, we can see they triggered 9V and 16V voltages with currents around 1.5-3.5A.

Creating a bar chart of the charging power data, it can be seen that the Redmi K70 Ultra’s charging power mainly concentrated at 13W and 25W, with the highest power being 26.98W achieved by the Lenovo thinkplus GaN 65W charger.

Power Banks

Lastly, for power banks, using the CUKTECH 10000mAh 30W as an example, it can provide the phone with 8.52V 2.91A 24.81W of power.

Summarizing the power bank compatibility data, all tested power banks, except for Xiaomi’s, triggered 9V voltage with currents around 1-3A.

Creating a bar chart of the charging power data, it can be seen that the Redmi K70 Ultra’s charging power mainly concentrated at 13W and 25W, with the highest power being 32.25W achieved by the Xiaomi 20000mAh 50W (3rd Gen) power bank.

Summary of ChargerLAB

The Redmi K70 Ultra's original charger remains highly compatible, generally delivering the maximum power the charger can provide. Third-party chargers and power banks supporting PD and PPS protocols offer an optimal experience. However, for the best charging experience, it is still recommended to use the original charger.

Compatibility Test of Redmi K70 Ultra