--- product_id: 58210667 title: "CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black)" brand: "casessary" price: "€ 5.74" currency: EUR in_stock: false reviews_count: 5 url: https://www.desertcart.gr/products/58210667-casessary-galaxy-s8-battery-case-w-quick-charge-3-0 store_origin: GR region: Greece --- # CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black) **Brand:** casessary **Price:** € 5.74 **Availability:** ❌ Out of Stock ## Quick Answers - **What is this?** CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black) by casessary - **How much does it cost?** € 5.74 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/58210667-casessary-galaxy-s8-battery-case-w-quick-charge-3-0) ## Best For - casessary enthusiasts ## Why This Product - Trusted casessary brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Description The CASESSARY Galaxy S8 battery case provides you QC 3.0 fast charging and full protection. Made with ergonomic anti-slip and durable design to protect against drops, bumps, scrapes, scratches and hard falls. Features: 1. Build-in high-capacity lithium-polymer battery, double the standby time for your Galaxy S8. 2. Premium material to protect your phone, charging and protecting 2 in 1. 3. USB OTG data support, enjoy fast data transfer without removing the battery case. 4. Integrated safety features with temperature control, effectively avoid short circuit or overcharge even under extreme conditions. Note: ★ Please use original charger or compatible QC 2.0/3.0 charger to ensure quick recharging speed. ★ Do not place battery case to fire / excessively hot environment. ★ The surface of this battery case may gradually become warm when charging. If there’s any problem when using our devices, please kindly contact us with the contact info enclosed on the service card, we are always here to help. Specifications: Compatibility: Only for Samsung Galaxy S8 5.8 inch ( Not compatible with Galaxy S8 Plus ) Battery Capacity: 4500mAh Battery Type: Li-polymer Input: DC 9V-1.67A, 15W Output: DC 9V-1.4A, 12.6W Material: PC+ABS Package Contents: 1x 4500mAh Galaxy S8 Battery Case 1x User Manual ## Features - About this item ★【STAY CHARGED ANYWHERE】: Only for Samsung Galaxy S8 5.8 inch ( Not compatible with Galaxy S8 Plus ) . World’s 1st and ONLY battery case compatible with Qualcomm Quick charge 3.0, with a long last 4500mAh Li-Polymer battery (>800 Life Cycle). Built into perfection with all features you need. DO NOT FIT S8 Plus, S8 Active OR S9!! ★【FULL 360° PROTECTION】: Designed with perfectly raised bezel, ergonomic anti-slip pattern, cushioned frame and rugged outer-shell. Provides superior protection against drops, hard falls and scratches. Plus premium patterned surface with anti-slip and fingerprint proof features. ★【PRIORITY PASS-THROUGH CHARGING + DATA TRANSFER】: Your phone will receive full-charge 1st and then begin to automatically re-charge the case in less than 2 hours. Plug-and-Play technology allows easy data-synchronization without having to remove the case. ★【DYNAMIC POWER MANAGEMENT】: Protect phone's battery life by optimize the charging speed when battery is empty or close to full. Sophisticated protective logic+ temperature sensor, prevents your device from over-heating / over-charging. Hex LED lights indicate an accurate power level. ★【LIFETIME WARRANTY】: Money Back Guarantee and Extended 2 Years Warranty. Upgrade to Lifetime Warranty by following @CASESSARY on Facebook, Twitter and Instagram. ## Images ![CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black) - Image 1](https://m.media-amazon.com/images/I/61GBhjwKg3L.jpg) ![CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black) - Image 2](https://m.media-amazon.com/images/I/71FmCDj0egL.jpg) ![CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black) - Image 3](https://m.media-amazon.com/images/I/81JwgJUw1vL.jpg) ![CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black) - Image 4](https://m.media-amazon.com/images/I/81cf4vNXoNL.jpg) ![CASESSARY Galaxy S8 Battery Case w. Quick Charge 3.0, Protective Charger with Priority Charge + Dynamic Power Management, 4500mAh Portable External Battery Pack Compatible w. Samsung Galaxy S8(Black) - Image 5](https://m.media-amazon.com/images/I/816FYUcRbtL.jpg) ## Customer Reviews ### ⭐⭐⭐ Phone only 80% charged over night *by S***S on Reviewed in the United States on April 12, 2018* My phone only gets around 80% charged charging together with the case over night. I emailed the seller and here is what they said. Which is more of a bandaid then trying to provide a solution.Dear Sandy,For overnight charging, we choose not to keep charging the phone once it's fully charged in order to protect your phone battery's life cycle. Having lithium battery keep charging at 100% level will significantly decrease battery's lifespan.Therefore your phone will continuously consume battery when it's is active working mode and resulting ~80% when you wake up in the morning. We normally recommend customer to quickly switch to Airplane Mode before sleep, and your phone will wake up at almost 100% in the morning and ready for the full day work.Hope helpful and be free to reach us at [e-mail address removed] if you have any further question.Best,James | CASESSARY Customer CareI have no problem if weren't charging with the case. Airplane mode? Really? Wow. ### ⭐⭐⭐ Works very well with some quirks but still happy I got it *by F***N on Reviewed in the United States on May 31, 2019* I haven't used one of these battery cases in a long time. But my s8 was a used phone and the battery capacity isn't as great as I wanted it to be...this case works very well. It has some quirks that I'm still figuring out. I saw other reviews about how it wasn't fully charged overnight and that's true for me too. But I understand why, in fact you shouldn't leave your phone charging overnight if you want your battery to maintain its capacity longer.What I do find confusing though is that I think it sometimes charges on its own.If you unplug it while its not 100% yet, it will switch to charging your phone from the case itself until its at 100%. so basically that's why I would sometimes unplug at 90% and head to work and by the time I got to work it was at 100% even though I didn't plug it into a car charger.one other thing I noticed today that is unfortunate is that it blocks the NFC. I guess any battery case is going to do that, there's no way around that...but if you use nfc for anything, you won't be able to anymore.Sadly i have to stop using this case because I want to use my s8 for reading my glucose sensor and it needs nfc to do that....so its rather unfortunate that I can't use this case anymore ### ⭐⭐⭐⭐⭐ This is a great product. The case holds the phone tightly *by B***O on Reviewed in the United States on March 17, 2018* This is a great product. The case holds the phone tightly, unlike some cases that I have tried. All of the cut-outs fit perfectly and allows the phone side buttons to protrude through the case which makes using them much easier than some other cases. The battery keeps my phone charged and has prolonged my battery life greatly. I was overnight charging my S8 each evening until I bought this product. Now I charge the phone every 3 or 4 days. The case is rather bulky and adds several ounces to the overall weight. However, the increased capacity makes it worth the additional heft.I access my cell between 35 and 40 times a day. If you are a heavier user than I am, you may not get the same longevity but I'm sure this item will increase your battery capacity enough to justify it's purchase price. --- ## 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.gr/products/58210667-casessary-galaxy-s8-battery-case-w-quick-charge-3-0](https://www.desertcart.gr/products/58210667-casessary-galaxy-s8-battery-case-w-quick-charge-3-0) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-06-01*