If you use a Galaxy with One UI and notice that the battery life isn't what it used to be, you're probably wondering how to see its true health. On Samsung phones, this information is usually hidden, but there are official and technical ways to access it. With a couple of tools and knowing which fields to look at, you can check your battery's status, interpret its values, and decide if a replacement is needed. The goal is for you to make decisions based on reliable data.without wasting time with imprecise tests.
In this guide I explain several methods: from the Diagnostics menu activated with the Samsung Members app, to the expert method using ADB with the command adb shell dumpsys batteryIn addition, you'll see how to interpret internal metrics such as ASOC, BSOH, mSavedBatteryAsoc, or the charge counter, when it's advisable to change the battery, and what has changed between One UI versions. All the content is written in a friendly tone.but with the utmost technical rigor so that there is no doubt.
What does "battery status" mean in One UI?
When we talk about the state or health of the battery, we are referring to how much usable capacity remains compared to the original (factory) capacity. With use, that number inevitably decreases.Charge and discharge cycles, heat, leaving your phone plugged in overnight, or overusing fast charging accelerate battery degradation. If the deterioration progresses, you may end up with a swollen battery or sudden drops in the battery percentage, clear signs that it's time for a replacement. To understand better what really affects the batteryReview the recommended charging and usage practices.
On Samsung devices, this information isn't usually displayed prominently. However, there are two ways to access it: the official method, by activating Diagnostics from Samsung Members, and the technical method, by querying the system via ADB to read internal metrics. Both approaches are complementary and they help you reliably check your battery's current status; furthermore, it's advisable to apply tips for extending lifespan and reduce degradation.
Check battery health in One UI from your mobile device using Samsung Members
Samsung offers a convenient way to check your battery status without cables or a PC: the official Samsung Members app. Once installed, a diagnostics section appears in Settings, allowing you to run diagnostics on your phone, including battery health. It is a simple, safe and suitable route for any user., and also enables other useful device checks.
- Install Samsung Members from the Play Store. If you already have it, update it from the same store.
- Open System Settings.
- Go to Device Care.
- Access Diagnostics (if a policy screen appears, accept to continue).
- Open the phone's test panel.
- Select Battery Status.
The verdict is usually displayed as "Good," "Normal," or "Bad." If it says "Good" or "Normal," you can continue using your phone without any special concerns. A "Bad" status is a wake-up callYou'll probably notice reduced battery life or even physical symptoms like bulging; in that case, it's recommended to replace the battery. If the battery loss is due to background processes, consult articles on apps that consume battery in the background.
An additional advantage of Samsung Members is that it "activates" the diagnostic section within Settings itself, where in addition to the battery you can evaluate virtually all components: Touchscreen, sensors, mobile network, Wi-Fi, location, microphone, camera, Bluetooth, USB, speaker, physical buttons, vibration, flashlight, and fingerprint readerIt's a modern alternative to USSD codes, with guided tests and clear results; if you prefer external tools for monitoring consumption, there are comparisons such as the one from AccuBattery and Battery Guru.
Check battery status in One UI using ADB: deep reading of ASOC, BSOH, and more
If you prefer an advanced method, you can query the system using ADB. Connect your phone to your computer with USB debugging enabled and run the command adb shell dumpsys battery. That dump shows internal fields that help estimate actual capacity and wear, even when the interface does not directly display health.
First, check the "Status" field. If that value is 1, the phone may not be reading the battery data correctly, and the results will be unreliable. If the state is NOT 1, continue with the analysis and take note of the key metrics that appear in the dump.
First reference
ASOC (Absolute State Of Charge). This is the absolute state of charge reported by the system. In several generations of One UI, users have used ASOC as a approximation of battery health, but since One UI 6.1.1, an additional field called BSOH (Battery State Of Health) has appeared. BSOH tends to be a more solid reference that ASOC when available, because it is specifically designed to reflect health.
Furthermore, recent versions expose a value called mSavedBatteryAsocThis number can be interpreted as the percentage of the maximum available capacity relative to the original capacity. It's best to take it as an approximation.: in some models it is not exact for all users, but it serves to give a quick idea of ​​the degradation.
Second calculation method
The "charge counter." In the dump, you'll see a long integer; the first four digits represent the mAh in the battery at that moment. If you note that value down to a specific battery percentage, you can estimate the actual capacity. The formula is straightforward.: current mAh divided by the percentage (in decimal form) to extrapolate to 100%.
Practical example: Imagine the counter reads 1410381 and your battery is at 42%. The first four digits are 1410 (mAh present). Dividing 1410 by 0,42 gives you approximately 3357 mAh as the actual capacity with a full battery. If the original model was 3500 mAhThe loss would be around 5%, a reasonable level after a couple of years of intensive use.
Another useful clue is in mSavedBatteryUsage: the first four digits of this field usually correspond to the number of charging cycles counted. Understanding the cycles is valuablebecause degradation accelerates beyond certain thresholds of sustained use.
This method via ADB is not exclusive to Samsung; in fact, it works on most Android phones because it relies on system services. However, the name and availability of each field They may vary by manufacturer, chipset, and Android/One UI version.
To ensure consistent measurements, calibrate the battery before performing calculations. Avoid aggressive shortcuts: using code is not recommended. *#0228# to force calibrations. Ideally, it should be a controlled cycle. (Discharge to a safe low level and recharge without interruption) and verify that the phone does not unexpectedly shut down at 20–30%; if it shuts down at those levels, the data from the dump will not be representative. If you want to limit degradation through charging practices, consider limit the load to 80%.
Also note that in some updates Samsung temporarily removed the traditional health value and later incorporated it mSavedBatteryAsoc game as an alternative. It's normal for these fields to fluctuate between buildsThat's why it's useful to compare several indicators (ASOC, BSOH, mAh count and cycles) instead of relying on a single number.
One UI 6.1.1, One UI 7 and where health information appears
One UI 6.1.1 added the BSOH field, visible via ADB, designed to reflect battery health more accurately than ASOC. In practice, many users have adopted it as a reference metric when the value is present in dumpsys battery. If you see BSOH in your dumpUse it as your primary indicator and compare it with the other signals.
With One UI 7 (Galaxy 25 series), Samsung has taken another step forward, allowing users to check their health status directly from the interface itself, without needing ADB. Availability may vary depending on the region and model, but the trend is clear: There is increasing transparency when exposing battery health to the end user.
Please note that the type of test, the available field, and its scope may vary depending on the product. Samsung introduces changes due to hardware, firmware, and factory calibrations, as well as internal testing. If any field does not appear on your deviceThis does not mean that there is no battery health, but rather that it may be exposed in another way or reserved for service tools.
When should the battery be changed and how should it be done?
There are clear signs that the battery needs replacing: frequent sudden shutdowns, rapid drops in percentage without heavy use, or a thin body that starts to bulge. If this happens to you often, it's time to check things out. and appreciate the change.
Samsung's official recommendation is to visit a Samsung Customer Service Center to have the device examined. Depending on the device's warranty, the replacement could be free. You might even get a pop-up notification on your mobile phone. indicating that it is advisable to replace the battery; heed that warning to avoid further damage.
Battery design and safety according to Samsung
Samsung explains that it prioritizes security with a defense-in-depth approach during device manufacturing. This includes multiple tests for battery design and drop impact mitigation measures, in addition to software protection algorithms. Security does not depend on a single layerbut rather how the hardware and firmware interact to prevent catastrophic failures.
The type and scope of these tests can vary depending on the product. Phones, foldable devices, tablets, and watches have different requirements and, therefore, adapted validation protocols. These batteries are designed to be safeBut safety and health are not the same thing: a battery can be safe and at the same time have lost capacity over time.
Recommendations for accurate measurement (and mistakes to avoid)
To obtain consistent readings, try measuring under stable conditions: no temperature spikes, no apps consuming resources in the background, and with acceptable coverage. After installing a major updateWait a few days for the system to reindex and normalize usage before drawing conclusions.
If you use the ADB method, note the exact battery percentage when you read the charge counter and try to repeat the measurement at several levels (for example, around 30–40% and around 80–90%). By combining several data points You reduce the impact of small inaccuracies and obtain a more realistic average.
Avoid using code *#0228# to "force" calibrations. This shortcut can alter temporary readings and does not fix an actual degradation. If the phone turns off by itself at 20–30%Focus first on stabilizing the system, completing a controlled charging cycle, and if the problem persists, consider replacing the battery.
Also remember that, although the ADB method works on many Android devices, not all models expose exactly the same keys. If you can't find a field If you have BSOH or mSavedBatteryAsoc, don't force advanced changes: stick with the available indicators and, if you need absolute certainty, contact technical support.
One UI Community and Context
The One UI community is very active: there are forums where information is shared, advice is requested and given, ideas are debated, and concepts are published. One UI doesn't just live on Galaxy phones; It also promotes tablets, foldable devices, laptops, watches, televisions, monitors, professional displays, smart boards, projectors, and even household appliances. such as refrigerators compatible with the latest updates. It's the software layer that Samsung implements on top of Android, Wear OS by Google, Microsoft Windows, and Tizen.
This community collaboration has led to tricks and discoveries such as the fields shown in dumpsys battery or the actual usefulness of metrics such as ASOC and BSOH. Enthusiastic users have documented version changesFor example, when Samsung removed a classic health value and later incorporated mSavedBatteryAsoc, or when the BSOH field was introduced in One UI 6.1.1 and direct health visualization in One UI 7 for the 25 series.
In that same spirit, more competition and more alternatives in the tech world benefit us all. The greater the rivalry between manufacturersBetter prices, more transparency, and better tools to check something as important as battery health.
More comments from the community
As a background note, some community threads have continued to be updated over time; for example, there was a featured edit in mid-February 2025 that reinforced data and nuances on these fields. Staying up to date with these changes It helps to correctly interpret what your phone displays after an update.
With all of the above, you now know how to evaluate battery health in One UI: the official route with Samsung Members for a quick and clear query, and the technical route with ADB for those who want detailed figures such as ASOC, BSOH, mSavedBatteryAsoc, charge counter or cycles.
If you detect a poor condition, unexpected outages, or sudden dropsPrioritize your safety and consider replacement at a Customer Service Center; and if everything is in order, apply good charging practices to extend its useful life. Share this tutorial and more users will be able to check the battery status in One UI.