Samsung Galaxy S21 Ultra Battery EB-BG998ABY 5000mAh

Galaxy S21 Ultra Battery: Autonomy and Stable Performance

This replacement battery restores the necessary charge capacity to a damaged phone or one worn out by use. It is the indicated solution to recover the autonomy of the Galaxy S21 Ultra with total current stability. The internal accumulator restores the usage time desired by the user.

Technical Specifications

• Part type: Internal battery
• Compatibility: Galaxy S21 Ultra (SM-G998B, SM-G998B/DS, SM-G998U, SM-G998U1, SM-G998W, SM-G998N, SM-G9980)
• Reference: EB-BG998ABY
• Capacity: 5000mAh
• Quality: Premium

When to Replace

• The percentage drops abruptly and suddenly
• The phone restarts or turns off unexpectedly under load
• The battery shows signs of swelling, pushing the back cover
• The device only turns on when plugged into the mains — confirm diagnosis
• Charge duration is not enough for the daily routine

Notes for the Technician

• Test before applying: connect the battery without gluing it and confirm that the device boots, charges and shows the percentage correctly. Thus, if there is any problem, the return or warranty is handled quickly and simply.
• Repair difficulty: Medium.
• Opening performed by removing the glass back cover with moderate heat.
• Mandatory disconnection of the battery connection to the main board before removing the wireless charging coil and shielding.
• Avoid puncturing the old part during extraction; use isopropyl alcohol to soften the fixing tape.
• New fixing adhesive for assembly sold separately.

What Distinguishes This Version

This version integrates the Premium range, being the best compatible alternative available on the market for this phone. It is the recommended choice for repair shops and demanding users looking for reliability without compromising system stability.

Frequently Asked Questions

Does this battery fit the other models in the S21 range?

No, this reference EB-BG998ABY is specific only to the Galaxy S21 Ultra, differing in dimensions and capacity compared to the other models in the series.

The phone turns off with 20% charge, does replacement resolve it?

Yes, sudden shutdowns with residual charge normally indicate marked wear of the energy accumulator cells.

Each item is tested by Micro Wire before shipment to guarantee total conformity, ensuring fast dispatch from Portugal. If you do not want to repair we can do it for you.