--- product_id: 633139407 title: "Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits" brand: "itmbet" price: "$46.93" currency: USD in_stock: true reviews_count: 8 category: "Itmbet" url: https://www.desertcart.us/products/633139407-battery-for-samsung-galaxy-s21-ultra-6000mah-upgraded-2024-new store_origin: US region: United States of America --- # 1000+ Charge Cycles 6000mAh Ultra Capacity Includes Repair Tool Kit Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits **Brand:** itmbet **Price:** $46.93 **Availability:** ✅ In Stock ## Summary > 🔋 Power up your Galaxy S21 Ultra with unstoppable energy! ## Quick Answers - **What is this?** Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits by itmbet - **How much does it cost?** $46.93 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/633139407-battery-for-samsung-galaxy-s21-ultra-6000mah-upgraded-2024-new) ## Best For - itmbet enthusiasts ## Why This Product - Trusted itmbet brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **DIY Friendly:** Comes with a professional screwdriver kit so you can upgrade your battery hassle-free and feel empowered. - • **Built to Last:** Over 1000 high-speed charge cycles ensure your phone stays energized longer than ever. - • **Certified Safety:** Grade A+ cells with CE & ROHS certification plus built-in IC chip protect against overheating and overcharging. - • **Power Through Your Day:** Upgraded 6000mAh capacity delivers extended talk and standby time—never miss a moment. - • **Perfect Fit Compatibility:** Specifically designed for Samsung Galaxy S21 Ultra 5G models SM-G998B/DS/U for seamless replacement. ## Overview This 2024 upgraded 6000mAh replacement battery for Samsung Galaxy S21 Ultra 5G offers a massive boost in capacity and longevity, supporting over 1000 charge cycles. Certified for safety with premium Grade A+ cells and equipped with a built-in IC chip, it ensures reliable, efficient charging. Compatible with all S21 Ultra 5G variants, it includes a handy repair toolkit for easy installation, making it the ultimate upgrade for professionals who demand peak phone performance. ## Description Product description Bring life back to your S21 Ultra only New Battery, New Phone! Why should you replace your battery? The more you use your phone, the more capacity of its battery will fade away. It means that your battery will hold a charge for a shorter time and you will have to spend more time in charging. A high capacity battery will give you more power than original standard battery, more power means more use time. We are a professional battery factory and we know battery, we have manufactured battery for many years and keep providing best quality products to customers. ITMBET ​- Battery for S21 Ultra Full set professional repair tool kits for replacing your S21 Ultra only battery 1 x Pentalobe Screwdriver 1 x Triangle opening tool 1 x Tri-point Screwdriver 1 x Phillips screwdriver 1 x Adhesive Strips 1 x Suction cup 1 x Ejection Pin 1 x Spudger We highly recommend you search video on YouTube to learn how to change your battery in case to damage any of important cable Please be careful when using tools to replace the battery, so as not to damage the battery and mobile phone parts due to excessive force! Please double check your phone model prior to purchasing to ensure this replacement battery is compatible with your phone. You can find some instruction videos or find a technician for help if you don't know how to replace your battery. Capacity: 6000mAh Watt-hour:23.1Wh Vlotage: 3.85V Compatible Model: Battery for Samsung Galaxy S21 Ultra, Model: S21 Ultra 5G SM-G998|G998B|G998U|EB-BG998ABY Upgrade Capacity Battery Longer battery life and more than 1000 charge cycles over the course of its lifetime. Brand New 0 Cycle, You can use your phone for a longer time! Durable Upgrade Double Fuse Dual IC design ensures that your battery won't fail under any circumstances. high quality IC conversion rate improves the utilization of the battery capacity. ITMBET Galaxy S21 Ultra battery tested strictly by professional machine for 3 times before shipping. Green and Safe ITMBET battery contains no mercury, cadmium, lead and other harmful substances.Each battery material for S21 Ultra is made of new high quality Lithium polymer battery cell and do not generate large amounts of gas, such as liquid boiling, thereby eliminating the possibility of violent explosions. PLEASE BE SURE TO READ ALL THE PRODUCT INFORMATION BEFORE PLACING YOUR ORDER! The reason why you should change your battery. We use our S21 Ultra only all-day, the more we use the phone, the battery will fade away really soon, so it will waste your time keep charging your phone, when you find your old battery is not durable,it is the time you need to change your battery. Our upgraded S21 Ultra only battery will satisfy your need, higher capacity and more durable, to help you save time keep charging your iPhone. IMPORTANT NOTE 1. Please confirm your phone model at the back of your Phone before placing an order. 2. To reach optimal performance, please use the original charger or use big current charger to charge the battery. 3. To use the battery longer, please use up all the energy of battery until your phone shuts down automatically, then charge it for up to 10 hours, repeat this 3-5 times, thus the battery can be reached the optimum effect of using. 4. If your Phone has the battery indicate issue after install our battery, please try again firmly press the battery connector, make sure it connect perfectly, then reboot your Phone, the battery indicator will work correctly. 5. The most important and difficult part is removing the battery by removing the sticky flexible tape without damaging the old battery, make sure to heat-up the phone at the back with a hairdryer to make it flexible. Review: Great battery - I'm 72 and was able to install this battery. My old battery was swollen and separated the case so that made it a little easier to open it up. My phone now looks like new and lasts longer on a charge than it did when it was new. Review: 9k - Great job ## Features - ►【 Upgrade Capacity to 6000mAh】- Galaxy S21 Ultra battery replacement use advanced technology makes the battery capacity for S21 Ultra up to 6000mAh with the same size. Best Replacement for the original S21 Ultra battery, With extra enhanced talk time, standby time and longevity . It will provide you with up to 1000+ charge cycles with the high-speed and efficient charge. - ►【 Compatibility Model 】- Suitable for Samsung Galaxy S21 Ultra, Model: S21 Ultra 5G SM-G998|G998B|G998U|EB-BG998ABY - ►【 High Quality Battery Replacement】- 100% New High quality updated battery for S21 Ultra Uses Grade A+ battery cells with CE and ROHS certified, Each battery comes with a tested under strict quality control standard, and built-in IC chip to prevent from over-charging, over-heating and other defects. All the batteries have been tested before shipping out, and come with repairing tools for installation. - ►【 You Will Get 】- This package contents: 1 x High Quality Replacement Battery for S21 Ultra; 1 x Repair Replacement Screwdriver Kit. - ►【Worry-free Warranty】 If you are not satisfied with our product, please contact our friendly customer service through the "Contact Seller" feature, and we will reach out to you within 24 hours to solve your problem quickly and efficiently! So you can purchase our products without any risk. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CZ71V8JD | | Antenna Location | Indoor/Outdoor | | Battery Capacity | 2950 Milliamp Hours | | Battery Cell Composition | NiMH | | Battery Cell Type | NiMH | | Battery Weight | 50 Grams | | Best Sellers Rank | #24,386 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #98 in Cell Phone Replacement Batteries | | Brand | ITMBET | | Customer Reviews | 4.3 out of 5 stars 80 Reviews | | Manufacturer | Xunxuanmei Cross-border Business (Shenzhen) Co., Ltd. | | Model Name | For S21U | | Model Number | For S21U | | Number of Batteries | 1 C batteries required. (included) | | Recommended Uses For Product | Indoor/Outdoor | | Reusability | Rechargeable | | UPC | 732133012574 | | Unit Count | 1.0 Count | | Voltage | 3.87 Volts | ## Product Details - **Battery Capacity:** 2950 Milliamp Hours - **Battery Cell Composition:** NiMH - **Brand:** ITMBET - **Number of Batteries:** 1 C batteries required. (included) - **Recommended Uses For Product:** Indoor/Outdoor ## Images ![Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits - Image 1](https://m.media-amazon.com/images/I/61BnFvRqctL.jpg) ![Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits - Image 2](https://m.media-amazon.com/images/I/61pupuK5XFL.jpg) ![Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits - Image 3](https://m.media-amazon.com/images/I/61HjGu0lLxL.jpg) ![Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits - Image 4](https://m.media-amazon.com/images/I/61GkVk7qbEL.jpg) ![Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits - Image 5](https://m.media-amazon.com/images/I/71CGIfoMOfL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great battery *by G***Y on December 13, 2025* I'm 72 and was able to install this battery. My old battery was swollen and separated the case so that made it a little easier to open it up. My phone now looks like new and lasts longer on a charge than it did when it was new. ### ⭐⭐⭐⭐⭐ 9k *by R***S on November 26, 2025* Great job ### ⭐⭐⭐⭐⭐ It works *by B***N on November 10, 2025* Good parts, thank you! ## Frequently Bought Together - ITMBET Battery for Samsung Galaxy S21 Ultra, [6000mAh] Upgraded 2024 New 0 Cycle EB-BG998ABY Battery Replacement for Samsung Galaxy S21 Ultra 5G SM-G998B/DS SM-G998U with Replacement Tool Kits - Perzework Rear Back Glass Replacement for Samsung Galaxy S21 Ultra 5G with Pre-Installed Adhesive and Repair Tool Kits (Phantom Black) - PHONSUN Back Battery Door Cover Adhesive Tape for Samsung Galaxy S21 Ultra 5G SM-G998U G998U1 G998 (Pack of 2) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/633139407-battery-for-samsung-galaxy-s21-ultra-6000mah-upgraded-2024-new](https://www.desertcart.us/products/633139407-battery-for-samsung-galaxy-s21-ultra-6000mah-upgraded-2024-new) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-18*