Premium EB-BG991ABY Replacement Battery for Samsung Galaxy S21 5G - 4000mAh High Performance
Professional-grade replacement battery engineered specifically for Samsung Galaxy S21 5G SM-G991U1. This high-performance EB-BG991ABY battery delivers exceptional power with 4000mAh capacity and 3.88V output, ensuring your Galaxy S21 5G maintains peak performance for demanding applications, 5G connectivity, and all-day flagship smartphone usage.
📱 Galaxy S21 5G Flagship Performance
- High Capacity Design: 4000mAh provides extended usage time for intensive 5G applications and flagship features
- 5G Optimized Power: Specifically engineered to support Galaxy S21 5G's advanced connectivity and performance
- Stable Power Output: 3.88V lithium-ion technology ensures consistent flagship smartphone performance
- Premium Quality Cells: Grade A lithium-ion cells for reliable, long-lasting power delivery
- Perfect Compatibility: Precisely designed to match original EB-BG991ABY battery specifications
⚡ Technical Specifications
- Battery Model: EB-BG991ABY
- Capacity: 4000mAh
- Voltage: 3.88V
- Battery Type: Lithium-ion
- Weight: 200g
- Color: Black
- Warranty: 1-Year Premium Flagship Battery Warranty
🔧 Compatible Device Model
This EB-BG991ABY replacement battery is specifically designed for:
- Samsung Galaxy S21 5G SM-G991U1 - Flagship 5G smartphone
- Direct replacement for original EB-BG991ABY battery part number
📲 Galaxy S21 5G Advanced Benefits
- ✅ All-Day 5G Performance: Extended battery life for high-speed 5G network operations and connectivity
- ✅ Flagship Photography: Reliable power for advanced camera features, 8K video recording, and computational photography
- ✅ Gaming Excellence: Sufficient power for mobile gaming with flagship processor performance
- ✅ Productivity Power: Optimized for multitasking, Samsung DeX, and professional applications
- ✅ Fast Charging Support: Compatible with Galaxy S21 5G's rapid charging and wireless charging technology
🛡️ Quality Assurance & Safety
KingSener specializes in premium flagship smartphone batteries with advanced safety features including overcharge protection, temperature control, and short circuit prevention. Each battery undergoes rigorous testing to ensure optimal performance and safety for your valuable Galaxy S21 5G.
📋 Important Compatibility Notice
This replacement battery is designed specifically for Samsung Galaxy S21 5G SM-G991U1 using EB-BG991ABY specification. Please verify your original battery model number before ordering. Professional installation recommended for optimal performance and warranty coverage.
Restore your Galaxy S21 5G's flagship performance and enjoy uninterrupted 5G smartphone experience with our reliable replacement battery!
Note:
This is not a complete list or inclusion of all compatible laptop models. You can open the back of your laptop to check the original battery model. If you have any compatibility questions, please contact us online.The casing is made of durable materials, the mainboard adopts advanced technology, and the battery core is produced with high-quality raw materials to ensure that it will not be damaged after long-term use.
Our products are equipped with multiple protection technologies such as overvoltage, overcurrent, and overcharge to effectively protect the safety of batteries and equipment.
Shipping Methods
| Shipping Methods | Ship To | Est. Delivery Time | Shipping Cost | Taxes & Fees |
|---|---|---|---|---|
| USPS / DHL | United States | 10-15 business days | Free | Free |
| Canada Post | Canada | 10-15 business days | Free | Free |
| Royal Mail / Yodel | United Kingdom | 15-20 business days | Free | Free |
| DHL | Germany | 15-20 business days | Free | Free |
| La Poste | France | 15-20 business days | Free | Free |
| Correios | Mexico/Spain/IT | 15-25 business days | Free | Free |
| Local Carriers | SE Asia / East Asia | 5-10 business days | Free | Free |
| Local Carriers | Rest of Europe | 20-25 business days | From $5.99 | Free |
| Local Carriers | UAE / Saudi Arabia / Israel | 16-20 business days | From $7.99 | Free |
📦 Shipping & Tracking Information
Looking for faster shipping? We offer local warehousing services. Please visit our "Local Delivery" page for items available for immediate dispatch.
1. How to Track Your Package:
Please choose the tracking link that corresponds to your destination:
- Europe & The Americas: 17track.net/en
- The Middle East: mena56.com
- Asia: 17exp.kingtrans.cn
Need Help?
If you cannot find your package on any of the above websites, please contact us immediately.
📧 Email: sales@batterymall.com / info@batterymall.com
📱 WeChat/WhatsApp: (+86) 198 6775 1872 / (+86) 191 2767 3310
🚚 Estimated Delivery Time
(1) Shipping from China:
- To Asia: 5-20 business days
- To North America: 10-15 business days
- To Europe/South America: 15-20 business days
(2) Shipping from Local Warehouses:
- From US Warehouse: 3-5 business days
- From European Warehouse: 2-10 business days
- From Russian Warehouse: 3-5 business days
Please note: Exact arrival times depend on the specific country and customs processing.
⚠️ Tax & Customs Information:
Global product prices include customs duties (some countries require a tax ID). Please refer to the settlement invoice for specific shipping costs. Special handling is required if your package is inspected.
Payment Methods
Paypal
Payments by PayPal, no PayPal account required. Paypal is safe and free for buyers.
PayPal account: Payment@batterymall.com
Account Name: ShenZhen KingSener Science and Technology Co., Ltd
Credit or debit card
VISA, MasterCard, the United States n Express,Maestro & Laser Card, APPLE Pay,etc.
PayPal never shares your financial information with us.
WeChat Pay
Currently only supports QR code payment. Please contact WeChat customer service and go to WeChat App to scan the QR code to complete the payment.
Google Pay
Pay with Google Pay, which is more convenient and faster.
Apple Pay
If you use an Apple device, you can use Apple Pay to pay, which is more convenient and faster.
Bank Transfer
Q&A
Quick FAQ:Laptop Battery Care & Troubleshooting
- How long does a KingSener battery last?2 to 3 years (approx. 500-800 charge cycles) under normal temperatures.
- Laptop says "Battery Not Detected". How to fix?1. Hard Reset: Unplug AC, remove battery, hold power button for 30 seconds.
2. Clean Contacts: Wipe metal connection pins.
3. Reset Drivers: Uninstall battery drivers in Device Manager, then restart.
4. Update BIOS: Ensure motherboard firmware is up to date. - Can I leave my laptop plugged in 24/7?Yes, the built-in TI chip prevents overcharging. Tip: To prevent long-term cell swelling, unplug and drain the battery to 40% twice a month.
- How do I store a laptop battery long-term?Store it at 50% charge in a cool, dry place. Never store at 0% or 100%. Cycle the battery every 3 months to maintain chemical activity.
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Are KingSener batteries safe?Yes. All batteries feature built-in IC protection against short-circuits, over-voltage, and overheating. Fully CE, FCC, and RoHS certified.