---
product_id: 455363174
title: "Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools"
brand: "e-yiiviil"
price: "KD 8.30"
currency: KWD
in_stock: true
reviews_count: 3
category: "E Yiiviil"
url: https://www.desertcart.com.kw/products/455363174-replacement-battery-eb-bg991aby-compatible-with-samsung-galaxy-s21-5g
store_origin: KW
region: Kuwait
---

# 3.88V stable voltage output 3880mAh high-capacity power Includes professional-grade installation tools Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools

**Brand:** e-yiiviil
**Price:** KD 8.30
**Availability:** ✅ In Stock

## Summary

> 🔋 Power your productivity—don’t let a dead battery slow your hustle!

## Quick Answers

- **What is this?** Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools by e-yiiviil
- **How much does it cost?** KD 8.30 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.kw](https://www.desertcart.com.kw/products/455363174-replacement-battery-eb-bg991aby-compatible-with-samsung-galaxy-s21-5g)

## Best For

- e-yiiviil enthusiasts

## Why This Product

- Trusted e-yiiviil brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Ready-to-Install Kit:** Comes with essential tools for a seamless battery replacement experience—professional installation recommended.
- • **Power Up with Confidence:** 3880mAh polymer battery designed for Samsung Galaxy S21 5G SM-G991U1 ensures reliable daily performance.
- • **Dedicated Customer Support:** Responsive 24-hour support to assist with any installation or product inquiries, because your time is valuable.
- • **Precision Voltage Delivery:** 3.88V output maintains device stability and optimal energy efficiency for your demanding workday.
- • **Tested for Quality Assurance:** Each battery undergoes rigorous pre-shipment testing to guarantee functionality and peace of mind.

## Overview

This replacement EB-BG991ABY battery offers a 3880mAh capacity and 3.88V voltage, specifically engineered for Samsung Galaxy S21 5G SM-G991U1. Packaged with professional tools and pre-tested for quality, it promises a reliable power boost for your device. Ideal for professionals seeking a dependable battery swap, backed by responsive customer support.

## Description

Item specsPart No:EB-BG991ABYCapacity:3880mAh/15.06WhVoltage: 3.88VType: PolymerPackaging: 1 x battery，1x toolsCompatible withSamsung Galaxy S21 5G SM-G991U1Notice before purchase1. Be carefully check the model number of your device to see if this battery is compatible with your device.2. A new Li-ion battery will achieve its best performance after 2 or 3 complete cycles of charge & discharge.3. When you install it, be sure the connector has been properly connected to your device.4. Do not use low quality third-party adapter charger to charge your device, that will shorten the battery's life.Contact usIf you have any questions or any issues when using our product, please send us a message, we will answer you within 24 hrs. Thank you for your time.

Review: Lasted 1 day - Worked great for one day, then would no longer hold charge. Have to deal with another installation fee and returning
Review: Battery Life Day 0 same as original 3-year old battery being replaced - Sucks. On Day 0, battery life was same as old battery I replaced. Now, 3 weeks later, I have to charge battery 2-3 times per day over an 18 hour day. Do NOT buy.

## Features

- This battery is compatible with Samsung Galaxy S21 5G SM-G991U1, please carefully check your phone model before purchase.
- When you replace your old battery, please carefully and gently disconnect your old battery's cable then connect your new battery to the mainboard. If you phone cannot be powered on with the new battery, you may need to install it again and be sure to check if the cable has been properly connected.
- If you have any questions or got any issues with our product, please feel free to contact us, we will reply to you within 24 hrs. We highly appreciate your kind patience.
- All the batteries have been tested before shipping out, and come with repairing tools for installation. No installation instruction.
- Need professional installation technology,We won't responsible for any damage due to improper operation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09CQ2YF4Z |
| Batteries | 1 Lithium Polymer batteries required. |
| Best Sellers Rank | #146,291 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #1,520 in Cell Phone Replacement Batteries |
| Customer Reviews | 2.8 2.8 out of 5 stars (14) |
| Date First Available | August 16, 2021 |
| Item Weight | 3.52 ounces |
| Item model number | EB-BG991ABY |
| Manufacturer | Shenzhen DeRui Trading Limited Company |
| Product Dimensions | 7.87 x 1.97 x 1 inches |

## Product Details

- **Battery Capacity:** 3880 Milliamp Hours
- **Battery Cell Composition:** Lithium Polymer
- **Brand:** E-YIIVIIL
- **Number of Batteries:** 1 Lithium Polymer batteries required.
- **Recommended Uses For Product:** galaxy

## Images

![Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools - Image 1](https://m.media-amazon.com/images/I/616UsIw2ALL.jpg)
![Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools - Image 2](https://m.media-amazon.com/images/I/61FymOOu8PL.jpg)
![Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools - Image 3](https://m.media-amazon.com/images/I/715vGg2WX7L.jpg)
![Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools - Image 4](https://m.media-amazon.com/images/I/71Ma-fpOK-L.jpg)
![Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools - Image 5](https://m.media-amazon.com/images/I/81CIKEFOPAL.jpg)

## Customer Reviews

### ⭐ Lasted 1 day
*by C***S on September 19, 2024*

Worked great for one day, then would no longer hold charge. Have to deal with another installation fee and returning

### ⭐ Battery Life Day 0 same as original 3-year old battery being replaced
*by T***Z on October 31, 2023*

Sucks. On Day 0, battery life was same as old battery I replaced. Now, 3 weeks later, I have to charge battery 2-3 times per day over an 18 hour day. Do NOT buy.

### ⭐⭐⭐⭐⭐ Review
*by J***Z on January 14, 2022*

Fácil de instalar

## Frequently Bought Together

- E-YIIVIIL Replacement Battery EB-BG991ABY Compatible with Samsung Galaxy S21 5G SM-G991U1 with Tools
- MMOBIEL Dock Connector Compatible with Samsung Galaxy S21 5G 2021 - Charging Port - Headphone Port/Microphone Replacement - Type C - Incl. Screwdrivers
- PHONSUN Pre-Cut Back Battery Door Cover Adhesive Double Sided Tape Glue Replacement for Samsung Galaxy S21 5G SM-G991U G991U1 G991 (Pack of 2)

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*Product available on Desertcart Kuwait*
*Store origin: KW*
*Last updated: 2026-01-26*