iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
To check your Samsung Galaxy S23 Ultra’s battery, open Samsung Members, go to Diagnostics or Phone diagnostics, and run Battery status. Samsung’s instructions say this option may be under Discover or Support, depending on the app’s layout. Follow the prompts and use the result displayed on your phone; Samsung’s guidance does not promise a precise remaining-capacity percentage for the S23 Ultra.
Run the Battery status diagnostic in Samsung Members
- Open the Samsung Members app. If it is not installed, Samsung says you can download it from Galaxy Store or Google Play. Samsung’s diagnostic instructions explain that the available tests can vary by model.
- Tap Diagnostics or Phone diagnostics. Depending on the current app flow, look under Discover or Support.
- Select Battery status and follow the on-screen prompts. If you start Test all, select the battery test when prompted.
- Review the diagnostic result shown in Samsung Members. Menu wording and placement can differ with the phone model, software version, region, and app layout, so follow the labels currently shown on your device.
Samsung describes the feature as a way to check battery status and optimize usage. The diagnostic is a status check; it should not be treated as a direct measurement of the battery’s current full-charge capacity.
Does Samsung Members show battery health as a percentage?
Samsung’s support instructions describe a battery status or condition diagnostic, but do not guarantee that the Galaxy S23 Ultra will display a numeric battery-health or remaining-capacity percentage. Report the result as your phone shows it rather than converting a status label into an unsupported percentage.
Recommended Free Tools
Samsung lists the S23 Ultra’s battery specification as 5,000 mAh in its 2023 model specifications. That is the published specification for the model, not a reading of your individual phone’s present usable capacity or health. See Samsung’s Galaxy S23 Ultra specifications.
#1 Best Overall
- ⚡ Premium Quality: Experience a new level of performance with our upgraded 5800mAh 3.85V battery replacement. This high-quality battery will restore your phone’s battery life to like-new condition, ensuring you stay connected longer.
- 🔋 Compatible Model: Specifically designed for the Samsung Galaxy S23 Ultra, this replacement battery is compatible with models SM-S918B, SM-S918U, and SM-S918U1/DS. [Note: Not compatible with Samsung Galaxy S23, S23 Plus, or any other Galaxy models.]
- 🛡️ Perfect Fit & Safe Performance: The EB-BS918ABY battery matches the original size, allowing for seamless integration within your phone’s motherboard frame. Constructed with premium integrated battery cells and certified by CE, UL, and ROHS, this battery offers effective protection against overcharging, overheating, and over-discharging.
- ⚠️ Usage Instructions: For optimal performance, use your original charger and cable to recharge this replacement battery. To maximize efficiency, fully discharge the battery during the first three uses before charging it to 100%. Remember, the battery reaches its full potential through 3 to 5 complete charge and discharge cycles.
- ✅Worry-Free Warranty: We stand by our product. If you encounter any issues, contact us via Amazon for a response within 12 hours. Backed by a 30-day money-back guarantee and lifetime technical support. Buy with confidence!
What to do if the result or symptoms concern you
A diagnostic result is one useful signal, but pay attention to how the phone behaves as well. Samsung identifies fast battery drain after charging and unexpected shutdowns—particularly in cold conditions—as possible signs of battery aging. A battery-performance degradation alert is also a reason to seek help.
- If Samsung Members reports a concern: follow any direction in the app and contact Samsung Support or a service center if you need an assessment.
- If a degradation alert appears: Samsung advises visiting a service center for inspection. Samsung Canada’s battery-condition guidance explains the alert and inspection advice.
- If the phone drains quickly or shuts down unexpectedly: if the problem persists, contact Samsung Support or a service center rather than relying on a status check alone. Samsung lists these behaviors among possible battery-aging symptoms. Samsung Singapore’s replacement guidance provides further detail.
Battery replacement: coverage depends on your warranty
Samsung says battery replacement may be covered by warranty or may require paid service, depending on the warranty conditions. Coverage and service terms are not universal, so check with Samsung for your location and device rather than assuming a replacement will be free. The cited guidance does not establish a universal replacement percentage, fixed price, or lifespan threshold for the S23 Ultra.
Quick Recap
Rank #3
- 【Compatibility】: Designed for Samsung Galaxy S23 Ultra ONLY — fits SM‑S918B / SM‑S918U / SM‑S918U1 (all S918 series); battery part number EB‑BS918ABY; does NOT fit S23, S23+, S22 Ultra or any other model; please confirm your device in Settings → About phone → Model number before ordering
- 【Battery Specs】: Rated 5800 mAh / 3.88 V fresh 0‑cycle replacement cell — higher rated capacity than a worn factory battery to support longer screen‑on time and standby; actual runtime varies with brightness, signal strength, background apps and temperature as with all batteries
- 【Built‑in Safety Protection】: Integrated PCB with over‑charge, over‑discharge, over‑current and short‑circuit protection — helps reduce risk of overheating or swelling; assembled with RoHS‑compliant cells and a stable 3.88 V output matched to the S23 Ultra's power management system
- 【DIY Install Kit】: Includes essential pry tools for a straightforward battery swap — the replacement is manageable for users with basic repair experience; we recommend following a step‑by‑step teardown video for your specific S918 variant and working carefully around flex cables and adhesive
- 【Calibration Tip】: After fitting, let the phone discharge naturally to ~5–10% then charge uninterrupted to 100% with the original cable/plug — repeat 2–3 full cycles so the battery management system reports percentage more accurately; if the connector does not seat fully, double‑check alignment and re‑check your S918 model confirmation
Rank #2
- [PLS CONFIRM DEVICE MODEL]-- The repair kit contains the instruction to guide you step by step installation, and we have professional engineers to answer all your questions about the repair process. Please verify your old battery part number and model before purchasing this replacement battery. Compatible with Samsung Galaxy S23 Ultra SM-S918, S918V, S918A, S918T, S918P, S918R4, S918U, S918U1, EB-BS918ABY. ★NOT FOR Samsung Galaxy S23, S23+, S23 FE★
- [BEST BATTERY PERFORMANCE]-- Please use original charger and cable to charge this battery. Using up all the power of galaxy s918 battery replacement for the first three times before charging, and then take a full charge, thus the battery can be reached the optimum effect of using. Please remember that its full performance and longevity is only achieved after 3 to 5 complete charge and discharge cycles.
- [SAME CAPACITY AS ORIGINAL]-- ASDAWN for galaxy s23 ultra battery replacement is made of high quality Li-ion battery cell, the advanced technology makes this replacement battery capacity up to 5000mAh and provides you a high-speed and efficient charging. Up to 48 hours of long lasting time, bring your battery's life back to glory and save the money. Choose ASDAWN battery restore your phone to like new performance!
- [SAFETY TESTED BATTERY CELLS]-- Our battery uses Grade A rated battery cells ensure longer battery life (500 cycles) and high-speed, efficient charging. Every for s23 ultra galaxy battery s918 is manufactured and tested under strict quality control standards. Build-in microchip to prevent over-charging, over-discharging, short-circuit and over-heating. Voltage protection and current protection for safer operation for both user and devices.
- [STRICT DUAL QUALITY CONTROL]-- We take care of all quality-related issues with a REPLACEMENT or REFUND. Our items are all produced in fully automated workshops, and the finished products are controlled and inspected by professional technical personnel to ensure that they are delivered to customers with superior performance and do not disappoint their trust in us. Only with excellent product quality can we go further!
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.

