--- product_id: 447171807 title: "LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black)" brand: "lalkons" price: "FREE" currency: VUV in_stock: false reviews_count: 2 url: https://www.desertcart.vu/products/447171807-lalkons-battery-case-for-galaxy-s21-ultra-4700mah-portable-protective store_origin: VU region: Vanuatu --- # Sync-through tech 4700mAh capacity Max protection design LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black) **Brand:** lalkons **Price:** FREE **Availability:** ❌ Out of Stock ## Summary > 🔌 Power Up Your Life with Style! ## Quick Answers - **What is this?** LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black) by lalkons - **How much does it cost?** FREE with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/447171807-lalkons-battery-case-for-galaxy-s21-ultra-4700mah-portable-protective) ## Best For - lalkons enthusiasts ## Why This Product - Trusted lalkons brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Seamless Syncing:** Charge and sync simultaneously without hassle. - • **Risk-Free Purchase:** 30-day money-back guarantee for peace of mind. - • **Ultimate Protection:** Defend your device against drops and scratches. - • **Uninterrupted Power:** Stay charged with 150%+ extra battery life! - • **Smart Power Management:** LED indicators keep you informed on battery status. ## Overview The LALKONS Battery Case for Galaxy S21 Ultra combines a robust 4700mAh rechargeable battery with advanced sync-through technology, allowing users to charge and sync their devices simultaneously. Designed for maximum protection, this case safeguards your phone from daily wear and tear while providing over 8 hours of additional talk time. With a satisfaction guarantee, it’s the perfect blend of functionality and peace of mind. ## Description NOTE: * This battery case is only suitable for Galaxy S21 Ultra (6.8 inch), not suitable other models Features: This battery case supports Type-C Cable. Provides 150% extra battery life for your Galaxy S21 Ultra. No excessive bulk and compact design for portability, and fits easily in your hand or pocket. Allow you to sync the data from your Galaxy S21 Ultra to your PC and charge your phone without taking the battery case off. ★★★How to use? Step 1.Please fully charge the battery case before using the product. Step 2.Please charge the battery case with the Type-C cable.(Package not included cable ) Step 3. When you want to charge your phone through the battery case, make sure the phone is tightly closed at the bottom of the case, then press the power button for about 3 seconds to start charging. Step 4. When you want to stop the battery case to charge the phone, press the power button for about 3 seconds, it will stop charging. Specification: Battery type: Lithium-polymer Capacity: 4700 mAh Working Temperature: 0℃-45℃ Input: DC5V/2.0A Output: DC5V/1.0A Box include: *1x user manual *1x battery case [Not included cable] IMPORTANT NOTES: 1. No cables are included, please use your original charging cable to charge it; 2. CarPlay is NOT supported. 3. Our battery case is manual, not automatic. 4. Wireless charging is NOT supported by this battery case. 5. DOES NOT protect the screen, DOES NOT protect the screen, DOES NOT protect the screen. ## Features - ✪Advanced Sync-through TECHNOLOGY: Amazing sync-through technology that you can charge your battery case and Galaxy S21 Ultra simultaneously with your existing Galaxy S21 Ultra charging cable,conveniently sync your S21 Ultra to your MacBook, PC or laptop without having to take the battery case off. - ✪IMPORTANT NOTE: Only compatible with Galaxy S21 Ultra (6.8 inch), Not compatible with Galaxy S21 and Galaxy S21 Plus, Support the headphones that came with your phone. [Not support Wireless charging.] - ✪MAX PROTECTION: The battery case is not only a portable charger, but also a protector for your phone.Raised sides and hard-shell design maximizes protection to your s21 Ultra, durable high- class material to protect your iPhone from scratches, drops, impacts and other daily wear and tear. - ✪LONG BATTERY LIFE: 4700mAh capacity rechargeable built-in lithium polymer battery case provides extra 150%+ power which is equivalent to an additional 8+ hours talk time or 12+ hours web-browsing time. 4 LED lights indicate how much power you have (25%--50%--75%--100%). Power switch allows you to switch on/off the battery case. - ✪100% SATISFACTION GUARANTEED: FNSON also delivers the best service ,we provide 30 days ask-free money back guarantee, and 1 year replacement warranty. If you are not satisfied with our product, please feel free to contact us, we will guide how to use, we will offer full refund or replacement. So you can purchase our products without any risk. ## Images ![LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black) - Image 1](https://m.media-amazon.com/images/I/715zzo+K-1L.jpg) ![LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black) - Image 2](https://m.media-amazon.com/images/I/61BoonynNiL.jpg) ![LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black) - Image 3](https://m.media-amazon.com/images/I/517OfSRLrOL.jpg) ![LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black) - Image 4](https://m.media-amazon.com/images/I/61eglEMJu0L.jpg) ![LALKONS Battery Case for Galaxy S21 Ultra, 4700mAh Portable Protective Charging Case Compatible with Samsung Galaxy S21 Ultra (6.8 inch) Rechargeable Extended Battery Charger Case (Black) - Image 5](https://m.media-amazon.com/images/I/81IpcI6zRmL.jpg) ## Customer Reviews ### ⭐ 1.0 out of 5 stars Kept glitching *by M***N on Reviewed in the United States on October 21, 2022* I was really excited when I first got the case. It was easy to just switch on and charge up, but after only a few weeks it would always turn the charging off while it was supposed to be charging. I wouldn't recommend it at all it won't last. ### ⭐ 1.0 out of 5 stars Doesnt charge my phone at all. It turns on and off on its own when i want it to stay on charging. *by L***S on Reviewed in the United States on July 19, 2022* Disliked that it doesnt charge at all. It turns on and off continuously and never charges the phone --- ## 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.vu/products/447171807-lalkons-battery-case-for-galaxy-s21-ultra-4700mah-portable-protective](https://www.desertcart.vu/products/447171807-lalkons-battery-case-for-galaxy-s21-ultra-4700mah-portable-protective) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-18*