---
product_id: 701994206
title: "SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit"
brand: "snronew"
price: "€ 40.48"
currency: EUR
in_stock: true
reviews_count: 8
category: "Snronew"
url: https://www.desertcart.hr/products/701994206-snronew-galaxy-s21-ultra-battery-2024-upgraded-6800mah-eb-bg998aby
store_origin: HR
region: Croatia
---

# 6800mAh Ultra-High Capacity Pro Installation Kit Included Multi-layer Safety Protections SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit

**Brand:** snronew
**Price:** € 40.48
**Availability:** ✅ In Stock

## Summary

> 🔋 Power up your Galaxy S21 Ultra like a pro—never settle for less!

## Quick Answers

- **What is this?** SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit by snronew
- **How much does it cost?** € 40.48 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/701994206-snronew-galaxy-s21-ultra-battery-2024-upgraded-6800mah-eb-bg998aby)

## Best For

- snronew enthusiasts

## Why This Product

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

## Key Features

- • **Built-In Smart Safety:** Advanced microchip guards against overcharge, overheating, and short circuits for peace of mind.
- • **Power That Lasts All Day:** 6800mAh capacity delivers extended usage, beating original battery life for nonstop productivity.
- • **DIY Friendly with Pro Tools:** Includes screwdriver kit and adhesive strip for a confident, professional-grade battery swap at home.
- • **Optimized Battery Activation:** Follow 3-5 full charge cycles post-installation to unlock peak battery performance and longevity.
- • **Tailored for Galaxy S21 Ultra:** Perfectly compatible with SM-G998B/DS and SM-G998U models—check your phone model before purchase.

## Overview

The SNRONEW Galaxy S21 Ultra Battery (2024 Upgraded) is a high-capacity 6800mAh Li-Polymer replacement battery designed specifically for Galaxy S21 Ultra 5G models SM-G998B/DS and SM-G998U. It features a built-in microchip for comprehensive safety protections and comes with a screwdriver tool kit and adhesive strip for easy installation. Rigorous quality testing ensures reliable performance, while recommended charging cycles maximize battery lifespan. Ideal for users seeking to restore or enhance their phone’s battery life with confidence.

## Description

Kindly Suggestion: 1. If you want to replace the battery more easily, it is recommended that you search for a replacement battery video on YouTube, which will give you professional guidance and methods. 2. We suggest that the power should be 100% used up and fully charged for 3-5 times after finished replacing the battery, this can fully activate the battery performance. Note:Especially attention for the details of removing adhesive strip. Plz keep old battery in complete condition when unloading it. It will catch fire or explode if accidentally puncture. COMPATIBLE MODELS: -Galaxy S21 Ultra (EB-BG998ABY) Package Included: - 1 x Replacement Battery for S21 Ultra - 1 x Repair Tool Kit - 1 x Adhesive strip **************************************************************** FAQ after installation Q1. Why battery connector does not fit? A1: Please check if you have bought and received wrong model battery, this battery is only for Galaxy S21 Ultra. Check the model number on the back of your phone . Q2. Why phone can’t turn on? A2: Make sure battery connector was connected correctly and charge phone for 15 minutes with original charger and cable. The charging needs to be charged to 5% before it can be turned on normally, If battery have exhausted battery power. Q3. Why battery won’t charge? A3: Maybe bad connect. Reopen your phone and reconnect the battery connector to logic board socket. Make sure battery connector connects well.

Review: Reliability Battery - is been a nice experience, I did change the battery my own, because I want my sister to have a reliable phone, I got the new version, so I can help her with my old, after I full charge it, y pas 10 days and still have the full charge, I was expecting a 70 or less charge, but what surprise, still full. yes is reliable battery from this store.
Review: Good Replacement Battery Strong Capacity but Installation Is Tricky - This upgraded 6800mAh battery works well once it’s installed. The charge lasts noticeably longer than the original S23 Ultra battery, and the phone runs normally with no overheating or errors. It’s a solid option if your original battery is worn out. The only downside is that installation is a bit tricky. The included tools help, but opening the S23 Ultra takes patience, heat, and careful prying. Once it’s in, though, the battery performs great and holds a strong charge throughout the day. Overall, a good high-capacity replacement, just be ready for a careful install.

## Features

- Rigorous Quality Inspection: All batteries undergo thorough testing before shipping to ensure your phone performs just as well as when you first received it.The built-in microchip provides multiple protections against overcharging, over-discharging, short circuits, and overheating.
- Compatible Models: This battery replacement is compatible with S21 Ultra models such as SM-G998B/DS SM-G998U Before purchasing, please verify your current battery's part number and model.
- Usage Tips: It is recommended to fully discharge and recharge the S21 Ultra battery, especially during the initial 3 charging cycles. This practice can significantly enhance the overall battery lifespan.Keep in mind that optimal performance and longevity are typically achieved after 3 to 5 complete charge and discharge cycles.
- Long-Lasting Battery: Restore your EB-BG998ABY battery's performance and save money.Experience rapid charging from 0% to 100% in seconds by simply swapping batteries. We highly recommend watching relevant online videos before installation.
- Customer Assistance :Please contact us if you encounter any issues with our product.We guarantee to resolve any concerns to your satisfaction within 24 hours.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0CLRK3RBQ |
| Batteries | 1 Lithium Polymer batteries required. (included) |
| Best Sellers Rank | #14,413 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #23 in Cell Phone Replacement Batteries |
| Color | Black |
| Customer Reviews | 3.8 3.8 out of 5 stars (294) |
| Date First Available | February 6, 2019 |
| Item Weight | 3.2 ounces |
| Item model number | YYS6 |
| Manufacturer | Shenzhen FengYunTong Technology Co., Ltd. |
| Other display features | CE |
| Package Dimensions | 6 x 5 x 1 inches |

## Product Details

- **Battery Cell Composition:** Lithium Polymer
- **Brand:** SNRONEW
- **Number of Batteries:** 1 Lithium Polymer batteries required. (included)
- **Reusability:** Rechargeable
- **Voltage:** 13.5 Millivolts

## Images

![SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit - Image 1](https://m.media-amazon.com/images/I/41Q3InQthxL.jpg)
![SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit - Image 2](https://m.media-amazon.com/images/I/41WmO7W07RL.jpg)
![SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit - Image 3](https://m.media-amazon.com/images/I/41gGS+pyEDL.jpg)
![SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit - Image 4](https://m.media-amazon.com/images/I/514aX+QfIFL.jpg)
![SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit - Image 5](https://m.media-amazon.com/images/I/51AY7pgq1GL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Reliability Battery
*by A***L on October 14, 2025*

is been a nice experience, I did change the battery my own, because I want my sister to have a reliable phone, I got the new version, so I can help her with my old, after I full charge it, y pas 10 days and still have the full charge, I was expecting a 70 or less charge, but what surprise, still full. yes is reliable battery from this store.

### ⭐⭐⭐⭐⭐ Good Replacement Battery Strong Capacity but Installation Is Tricky
*by L***S on November 16, 2025*

This upgraded 6800mAh battery works well once it’s installed. The charge lasts noticeably longer than the original S23 Ultra battery, and the phone runs normally with no overheating or errors. It’s a solid option if your original battery is worn out. The only downside is that installation is a bit tricky. The included tools help, but opening the S23 Ultra takes patience, heat, and careful prying. Once it’s in, though, the battery performs great and holds a strong charge throughout the day. Overall, a good high-capacity replacement, just be ready for a careful install.

### ⭐ Junk
*by J***E on July 15, 2025*

False capacity. Drains extremely fast. To test i charged over night, turned the phone on, put it in airplane mode, data turned off, wifi and Bluetooth off, no open apps, eco mode active. It was dead before I got home from work.

## Frequently Bought Together

- SNRONEW Galaxy S21 Ultra Battery, (2024 Upgraded) 6800mAh EB-BG998ABY Li-Polymer Battery Replacement Compatible with Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Screwdriver Tool Kit
- Perzework Rear Back Glass Replacement for Samsung Galaxy S21 Ultra 5G with Pre-Installed Adhesive and Repair Tool Kits (Phantom Black)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-01-26*