--- product_id: 486461738 title: "Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit" brand: "unklou" price: "144.63 DT" currency: TND in_stock: true reviews_count: 8 category: "Unklou" url: https://www.desertcart.tn/products/486461738-galaxy-s20-ultra-battery-upgraded-unklou-5800mah-li-polymer-replacement store_origin: TN region: Tunisia --- # Built-in microchip for safety Up to 800 charge cycles 5800mAh powerhouse Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit **Brand:** unklou **Price:** 144.63 DT **Availability:** ✅ In Stock ## Summary > 🔋 Power up your Galaxy S20 Ultra like a pro—never miss a moment! ## Quick Answers - **What is this?** Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit by unklou - **How much does it cost?** 144.63 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/486461738-galaxy-s20-ultra-battery-upgraded-unklou-5800mah-li-polymer-replacement) ## Best For - unklou enthusiasts ## Why This Product - Trusted unklou brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Endless Power Boost:** 5800mAh capacity keeps your Galaxy S20 Ultra running longer than ever. - • **Smart Safety Shield:** Advanced microchip prevents overcharging, overheating, and short circuits for worry-free use. - • **Peace of Mind Warranty:** 24-month warranty plus 30-day money-back guarantee ensures risk-free upgrade. - • **Tailored Compatibility:** Specifically designed for Samsung Galaxy S20 Ultra models SM-G988/G988B for perfect fit and function. - • **Certified Quality Assurance:** CE, ROHS, and UL certifications guarantee premium, reliable performance. ## Overview The UNKLOU 5800mAh Li-Polymer replacement battery is a high-quality, certified upgrade for Samsung Galaxy S20 Ultra 5G models SM-G988 and G988B. Featuring built-in microchip protection and up to 800 charge cycles, it ensures safer, longer-lasting performance backed by a 24-month warranty and customer support. ## Description Tips ： Please double check your phone model prior to purchasing to ensure this replacement battery is compatible with your phone. Product Specifications - Battery Capacity: 5,800 mAh - Battery Type: Lithium Ion Polymern - Voltage Output: 3.85 V - Watt-hour: 22.33Wh COMPATIBLE MODELS -Samsung Galaxy S20 Ultra -EB-BG988ABY -SM-G988 -SM-G988B Package Includes: -Replacement Battery for Samsung Galaxy S20 Ultra x 1 pcs -1 x Manual Guide NOTE: FAQ after installation Q1. Why battery connector don’t fit? A1: Please check if you have bought and received wrong model battery, you can check your phone model 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. Note: if small stuff ( such as debris, or some other obstruction )drops in the battery socket, clean it up. Q4. Why the battery I bought is not fully charged after installation? A4: For security, battery is never full charged when leaving factory and testing. It’s normal that batteries level is between 5-80% charged when you first put into phone. Q5. Will I lose any date when changing my battery? A5: No data will be lost if the repair process is done correctly. You can find some instruction videos on YouTube or find a technician for help if you don't know how to replace your battery. Review: Economically priced solution - Purchased to revive a nearly dead phone, and to simply tinker. I'd never changed one in this generation of phone. I also changed the back. I'm glad I was planning that anyway, as the phone's original adhesive was well applied. Even with the heat gun it was a struggle. The replacement seems to hold the charge well. Review: Inexpensive AND easy to install! - Easy to install! Everything was as described. If you have never replaced a cell phone battery before, this is super easy even for newbies. Price is right too. ## Features - 🌺【BRAND New Battery 】: UNKLOU Replacement battery for Samsung Galaxy S20 Ultra battery. Make your phone acting like a brand new - 🌺【HIGH QUALITY A++ BATTERY】Manufactured and tested under strict quality control standards, Build-in microchip to prevent over-charging, over-discharging, short-circuit and over-heating. STRICT QUALITY-CONTROL. CE, ROHS and UL certified. The life of battery is up to 800 charge cycles.Top-rate A++ battery cells with multiple-protection for safer operation for both user and devices. - 🌺【COMPATIBLE MODELS】: UNKLOU Replacement battery Compatible with Samsung Galaxy S20 Ultra Only, Model: EB-BG988ABY, SM-G988, SM-G988B . Not for other phone model . - 🌺【USE SKILLS AND BEST PERFORMANCE】Use your original charger and cable which came with your phone to recharge this replacement battery. Using up all the power of battery for the first three times before charging, and then take a full charge,thus the battery can be reached the optimum effect of using. Please remember that its full performance and longevity is only achieved after 3 to 5 complete charge and discharge cycles. - 🌺【24 Month WORRY-FREE WARRANTY】24 Month Warranty, 24-Hour reply and 30 days Money Back. What we sell is not only high quality battery, but also our friendly customer service.Please contact us via email if you have any questio ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BHNKR1C1 | | Antenna Location | Phone | | Battery Capacity | 5800 Milliamp Hours | | Battery Cell Type | Lithium Polymer | | Battery Weight | 50 Grams | | Best Sellers Rank | #30,658 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #190 in Cell Phone Battery Charger Cases | | Brand | UNKLOU | | Compatible Phone Models | Samsung Galaxy S20 Ultra | | Customer Reviews | 4.0 4.0 out of 5 stars (733) | | Manufacturer | Shenzhen FengYunTong Technology Co., Ltd. | | Model Number | YYS20U | | Reusability | Rechargeable | | Unit Count | 1 Count | | Voltage | 3.85 Volts | | Warranty Description | 12 months | ## Product Details - **Battery Capacity:** 5800 Milliamp Hours - **Battery Cell Composition:** Lithium Polymer - **Brand:** UNKLOU - **Recommended Uses For Product:** Phone - **Unit Count:** 1 Count ## Images ![Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit - Image 1](https://m.media-amazon.com/images/I/71teO6LV2nL.jpg) ![Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit - Image 2](https://m.media-amazon.com/images/I/71ts57Gx6ML.jpg) ![Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit - Image 3](https://m.media-amazon.com/images/I/71kigRSBXmL.jpg) ![Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit - Image 4](https://m.media-amazon.com/images/I/71rlQRe69gL.jpg) ![Galaxy S20 Ultra Battery, [Upgraded] UNKLOU 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit - Image 5](https://m.media-amazon.com/images/I/61XDZsz9pfL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Economically priced solution *by L***H on September 7, 2025* Purchased to revive a nearly dead phone, and to simply tinker. I'd never changed one in this generation of phone. I also changed the back. I'm glad I was planning that anyway, as the phone's original adhesive was well applied. Even with the heat gun it was a struggle. The replacement seems to hold the charge well. ### ⭐⭐⭐⭐⭐ Inexpensive AND easy to install! *by G***S on March 6, 2026* Easy to install! Everything was as described. If you have never replaced a cell phone battery before, this is super easy even for newbies. Price is right too. ### ⭐ Poor battery life amps is not what is stated *by J***B on January 2, 2026* I installed this in my phone and rather battery reset did the normal battery cycling to get the most out of the battery and then checked the stats of the battery and my phone stated the battery was only a 4300mA battery not a 5000mA as stated on the product if I could it would get no stars and I'm not paying to have this one pulled from my phone and turn around and pay again to have a new one installed phone is too old to keep adding money to it ## Frequently Bought Together - UNKLOU Galaxy S20 Ultra Battery, [Upgraded] 5800mAh Li-Polymer Replacement Battery for Samsung Galaxy S20 Ultra 5G 5G SM-G988 G988B EB-BG988ABY with Repair Replacement Tool Kit - MMOBIEL Earpiece Speaker Compatible with Samsung Galaxy S20 Ultra 5G / S20 Ultra / S20+ 5G / S20+ / S10+ / S10 5G / S10E / S9 / Note 10 - Earspeaker/Ear Piece Replacement - Incl. Screwdrivers - MMOBIEL Dock Connector Compatible with Samsung Galaxy S20 Ultra 2020 - Charging Port - Headphone Port/Microphone Replacement - Type C - Incl. Screwdrivers --- ## 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.tn/products/486461738-galaxy-s20-ultra-battery-upgraded-unklou-5800mah-li-polymer-replacement](https://www.desertcart.tn/products/486461738-galaxy-s20-ultra-battery-upgraded-unklou-5800mah-li-polymer-replacement) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-08*