- Home Page /
- Mobile Phone Accessories /
- Accessories /
- Maintenance, Upkeep & Repairs /
- Replacement Parts /
- Batteries /
- Battery for Samsung Galaxy S21, Upgraded 4900...
0 ratings
Item #:
229764430
Battery for Samsung Galaxy S21, Upgraded 4900mAh High Capacity Replacement with Repair Tool Kit, Compatible with SM-G991U SM-G991F
Item #:
229764430
BWP 391
Price Details
Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )
*All items will import from US
0 ratings
Write a review
In stock
Imported from USA store
QTY:
Order now and get it around Sunday, August 16
Secured transaction
Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.
Our Top Logistics Partners
With a 4900mAh capacity and New A+ grade cells, this battery provides enhanced power output and efficient discharge, delivering long-lasting, dependable energy for consistent performance.
Fast
Shipping
Free
Return*
Secure Packaging
100% Original Products
PCI DSS Compliance
ISO 27001 Certified
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.
What Stands Out
High Capacity
With a powerful 4900mAh capacity, this battery ensures extended usage time, allowing users to stay connected longer without frequent recharges. Ideal for heavy users needing reliability throughout the day.
Repair Kit Included
This product comes with a comprehensive repair tool kit, simplifying the replacement process. It empowers users to easily install the battery, saving on professional repair costs while promoting DIY skills.
Wide Compatibility
Designed specifically for Samsung Galaxy S21 models (SM-G991U, SM-G991F), this battery guarantees seamless compatibility. Users can trust its performance and fit, ensuring a hassle-free installation and optimal functionality.
Product Details
| Number of Batteries | 1 Nonstandard Battery batteries required. |
| Brand | RUEMIU |
| Manufacturer | Dongguan Mingfeng Technology Co., Ltd. |
| Battery Capacity | 4900 milliamp_hours |
| Reusability | Rechargeable |
| Unit Count | 1 Count |
| Battery Weight | 103 g |
| Antenna Location | Phone |
| Battery Cell Type | Lithium Ion |
| Battery Cell Composition | Lithium Ion |
| Recommended Uses For Product | Phone |
| Country of Origin | This item will be imported from US |
| Date First Available | April 13, 2026 |
| What is in the box | Battery for Samsung Galaxy... For more details, please check description/product details |
Dangerous Goods
To avoid the delay in customs clearance process for Dangerous Goods, the shipment shall be opened at our warehouse facility to check the severity of hazardous components. Please see the list of Dangerous goods here.
Who Should Buy?
-
Frequent Travelers
Users who often travel may require a high-capacity battery for extended phone usage on the go.
-
Heavy App Users
Individuals who run power-intensive apps can benefit from the upgraded capacity to prevent rapid battery drain.
-
Tech-Savvy Users
Gadget enthusiasts who feel comfortable with repairs will appreciate the included tool kit for installation.
-
Non-Technical Users
Those unfamiliar with phone repair may struggle with installation, risking damage to the device.
Product Description
Battery for Samsung Galaxy S21, Upgraded 4900mAh High Capacity Replacement with Repair Tool Kit, Compatible with SM-G991U SM-G991F
Have any Query? Chat with us
Customer Questions & Answers
-
Question:
Is this battery compatible with devices other than Galaxy S21?
Answer: No, this battery is specifically designed for the Galaxy S21 models SM-G991U and SM-G991F only. -
Question:
How do I maximize the lifespan of the battery?
Answer: Perform a full discharge charge every other month and avoid keeping the adapter connected for too long during use. -
Question:
What safety certifications does this battery have?
Answer: The battery is CE, RoHS certified, ensuring reliable and safe usage.
RUEMIU Batteries Editorial Review
No editorial reviews found
Customer Reviews & Ratings
1 customers ratings
-
5 Star
0%
-
4 Star
100%
-
3 Star
0%
-
2 Star
0%
-
1 Star
0%
Review this product
Share your thoughts with other customers
Pros
- Exceptional performance
- User-friendly design
- Durable and long-lasting
- Great customer support
- Highly recommended by users
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
CK
Chitra
Verified buyer
“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
K
kund
Verified buyer
“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
OO
Onesi
Verified buyer
“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
SJ
SAO JOHN
Verified buyer
“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
Secure Checkout
Global Delivery
Easy Returns
Genuine Products
Product Price History
Important information
- Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
- Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.
BWP 391
Order now and get it around Sunday, August 16
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
Our Top Logistics Partners
Fastest cross-border delivery
Features & Benefits
- High-capacity 4900mAh battery for reliable power.
- New A+ grade cells ensure efficient discharge and durability.
- Integrated Smart IC chip for multiple safety protections.
- Designed for precise 1:1 fit, ensuring flawless installation.
- Supports over 1000 charge cycles, retaining 80% capacity after 2+ years.
- Includes all necessary tools for easy installation.
Ubuy Assurance
Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.