Xiaomi 14 Ultra Battery test

The battery life score is composed of three performance sub-scores: Home/Office, On the go, and Calibrated use cases. Each sub-score includes the results of a comprehensive set of tests to measure battery life in all types of real-life scenarios.

A robot housed in a Faraday cage performs a series of touch-based user actions during what we call our “typical usage scenario” (TUS) — making calls, streaming video, etc. — 4 hours of active use over a 16-hour period, plus 8 hours of “rest.” The robot repeats this series of actions every day until the device runs out of battery.

Using a smartphone on the go has a negative impact on battery life due to additional “hidden” demands, such as continuous signaling associated with cellular network selection, for example. SBMARK battery experts take the phone outdoors and perform a series of precisely defined activities, following the same three-hour travel route (walking, taking the bus, subway, etc.) for each device

For this series of tests, the smartphone returns to the Faraday cage and our The robots repeatedly perform actions related to a specific use case (such as gaming, video streaming, etc.) at a time. Starting at 80% charge, all devices are tested until they have depleted at least 5% of their battery.

Charging is an integral part of the overall battery experience. In some situations where battery life is at a premium, knowing how quickly you can charge becomes an issue. The SBMARK Battery Charging Score is made up of two sub-scores, (1) Full Charge and (2) Rapid Boost.

Full-charge tests evaluate the reliability of the battery charge indicator; they measure how long and how much energy it takes for the battery to charge from zero to 80% capacity, from 80% to 100% as shown by the user interface, until it reaches an actual full charge.

With the phone at different charge levels (20%, 40%, 60%, 80%), Quick Boost tests measure how much charge the battery receives after being plugged in for 5 minutes. The chart here compares the average battery gain from a 5-minute quick charge.

The SBMARK Energy Efficiency Score is composed of two sub-scores, Charge up and Discharge rate, both of which combine data obtained during a typical usage scenario based on robots, calibrated tests and charging evaluation, taking into account the battery capacity of the device. SBMARK calculates the annual energy consumption of the product, shown in the graph below, which is representative of the overall efficiency during a charge and when in use.

The partial charge score is a combination of four factors: the overall efficiency of a full charge, which is how much energy is needed to fill the battery compared to the energy the battery can provide; the efficiency of the travel adapter when it comes to transferring energy from an outlet to the phone; the remaining consumption when the phone is fully charged and still connected to the charger; and the remaining consumption of the charger itself, when the smartphone is disconnected from it. The graph below shows the overall efficiency of a full charge in %.

The discharge subscore evaluates the discharge rate of a battery during a test, which is independent of the battery capacity. It is the ratio of the capacity of a battery to its runtime. A small capacity battery may have the same runtime as a large capacity battery, indicating that the device is well optimized, with a low discharge rate.