Revive Your Samsung Galaxy S23 Ultra 5G with a New Battery – Easy Step-by-Step Replacement Guide

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OVERVIEW:

In this guide, we’ll walk you through how to replace the battery on the Samsung S23 Ultra. This repair requires precision and patience, especially due to the curved back glass and compact internal components. We’ll take you step by step, starting from back panel removal to installing a new battery. Whether you’re using a heat gun or heating mat, the key is safe disassembly without cracking the glass or damaging flex cables. Let’s dive into this comprehensive repair guide and get your S23 Ultra powered up with a fresh new battery.

See the official Samsung specs for this model for Samsung Galaxy S23 Ultra 5G Model SM-S918U

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REPAIR TIME & SKILL LEVEL:

This repair is estimated to take about 1 to 1.5 HOURS to complete and is of INTERMEDIATE difficulty, requiring careful handling of delicate flex cables and back glass removal.

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STEPS:

Tools You Need

For this repair, you will need a heating mat or heat gun set between 70 to 90 degrees Celsius, isopropyl alcohol to loosen adhesive, a plastic card for safe glass removal, a Phillips screwdriver to remove internal screws, and a curved metal spudger with a concave tip for battery extraction.

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Heat and Loosen the Back Glass

• Begin by using a heat gun or heating mat to warm up the back glass. Ensure the temperature is safe and consistent to avoid damage.
• Carefully apply isopropyl alcohol along the edges of the back glass to help dissolve the adhesive underneath.
• Use a plastic card to slide under the back glass. Avoid prying tools that may damage the curved glass or scrape the coating.

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Remove the Back Panel

• Slowly work the plastic card around the perimeter to detach the adhesive and lift the back panel off the device.
• Be patient and gentle — curved glass is prone to cracking if too much force is applied.

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Remove the Phillips Screws and NFC Pad

• Use a Phillips screwdriver to unscrew all the screws securing the NFC wireless charging pad.
• Carefully remove the pad and set it aside, making sure not to damage any of the surrounding components.

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Disconnect the Battery and Cables

• Start by disconnecting the battery connector.
• Then disconnect the mainboard flex cable, the LCD screen connection, and the main antenna module flex cable.
• Take care not to bend the cables too much during this process. They are delicate and must be preserved for reassembly.

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Apply Isopropyl and Heat to Loosen Battery Adhesive

• Apply isopropyl alcohol underneath the battery to dissolve the adhesive holding it in place.
• Reheat the area gently if necessary to make battery removal safer and easier.
• This method is preferred over using pull tabs as it provides a cleaner, more efficient removal.

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Remove the Battery with Curved Metal Spudger

• Use a curved metal spudger — make sure to use the concave side to avoid puncturing the battery.
• Carefully insert the tool into the corner of the battery and slowly lift it out.
• Do not rush this step; slow and steady pressure ensures safe removal.

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Install the New Battery

• Position the new battery in place.
• Use double-sided tape to secure the battery firmly to the housing.
• Make sure it’s properly aligned and snug before reconnecting any components.

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Reconnect Cables and Reassemble

• Reconnect the battery connector, mainboard flex, LCD cable, and antenna flex cable.
• Double-check each connection to ensure proper alignment and seating.

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Secure the NFC Pad and Screws

• Replace the NFC wireless charging pad into its original position.
• Use the Phillips screwdriver to fasten all screws back securely.

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Power On and Test the Device

• Turn on the phone to ensure everything is working correctly.
• Verify that the battery is functioning and that all connections are intact.
• Once confirmed, you’re done!

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CONCLUSION:

Replacing the battery in the Samsung S23 Ultra is a rewarding repair if done carefully. With the right tools and a steady approach, you can bring new life to your device. Avoid using aggressive tools around the curved glass, and always prioritize safety when handling batteries. Take your time, follow each step closely, and you’ll get it done right. Your phone will be up and running again with a refreshed power source.

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VIDEO TUTORIAL:

Looking for a more in-depth tutorial? Check out our complete teardown video for a detailed step-by-step walkthrough.

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MAIL-IN REPAIR SERVICE:

We offer professional battery replacement services. If you’re unsure about doing this repair yourself, send your device to our expert technicians for fast and reliable repair.

https://tekdep.com/device-repair/

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SHOP PARTS:

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SHOP TOOLS:

Using precision tools ensures a safe and efficient repair. Always use the right tools to prevent damage to delicate components. Invest in high-quality equipment to make your repair experience smoother and more reliable.

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HAVE QUESTIONS?

We’re here to help! Contact us:

• Phone: 818-456-4479
• Email: [email protected]

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