Sale!
BM4X 4710mAh 3.87V Li-ion Polymer replacement battery for Xiaomi Mi 11 M2011K2C and M2011K2G, front view showing battery surface and small 2-pin connector
BM4X 4710mAh 3.87V replacement battery for Xiaomi Mi 11, back view showing model number BM4X, capacity 4710mAh, and voltage 3.87V on spec label

BM4X 4710mAh 3.87V Battery for Xiaomi Mi 11 Replacement

Original price was: $29.99.Current price is: $23.99.

🔘 BM4X 4710mAh 3.87V | 🔋 Li-ion Polymer | 📱 For Xiaomi Mi 11 55W Fast Charging

8 in stock

No PayPal account? 💳 Pay with credit/debit card | 🛡️ PayPal Buyer Protected
SKU: BM4X Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

Unlike marketplace sellers with short buyer protection windows, we handle claims directly — no automated disputes, no endless back-and-forth.

Compare✅ Qingsm Tech⚠️ eBay / AliExpress
Warranty Period90 days from delivery15-30 days from order confirmation
When It Starts📦 Upon delivery⚠️ Upon order confirmation (even before you receive it)
Claims HandlingWe do it directly — email usAutomated dispute system, seller dependent
After Window ExpiresStill can contact us for supportNo recourse, seller can ignore you

🔋 90-day warranty is the industry standard for replacement batteries. Batteries naturally lose capacity over time — this normal wear is not covered. Warranty applies to manufacturing defects only.

📦 Shipping Cost & Delivery Time (Economy Shipping from China)

📦 Note: Batteries are classified as hazardous goods and must be shipped via specialized channels, which may take slightly longer than standard couriers. Delivery times are estimates and may be affected by customs, weather, or other unforeseen circumstances. If your country is not listed in the table below, we are currently unable to ship batteries to that destination.

DestinationFreight (USD)Est. Delivery Time
United States$7.808–15 days
Canada$6.8018–30 days
Mexico$10.0030–60 days
Germany, France, United Kingdom, Greece$6.5018–30 days
Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Bulgaria, Romania$14.0030–50 days
South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan$7.5018–30 days
United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil$18.0025–60 days

🇧🇷 Note for Brazil: Brazilian customs can occasionally cause delays of up to 80 days or more. And please indicate the recipient's CPF, as it is required for Brazilian customs and shipping. Thanks! We appreciate your understanding.

🇪🇺 Note for EU countries: Due to new EU customs regulations effective July 1, 2026, a flat tariff fee of $4.00 (approx. €3.50) applies to shipments to EU countries. This fee covers customs tariff, handling, and payment processing costs, and will be added at checkout. Thank you for your understanding.

🔋 Can't find your battery model? Use our FREE Battery Lookup Service – tell us your device and we'll find a match within 24 hours. 👉 battery.qingsm.tech/find-my-battery

Description

✅ Condition: Brand New – Never used, factory-tested quality

✅ 4710mAh High Capacity – Restores full battery life for Xiaomi Mi 11

✅ CE / RoHS / UN38.3 Certified

✅ 90-Day Warranty from delivery – Longer coverage than major platforms

✅ Ships in 3-7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

✅ 100% Compatibility Guarantee – If it doesn’t fit, we’ll refund you. No questions asked.

⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.

Battery model: BM4X
Capacity: 4710mAh (typical) / 18.2Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Xiaomi Mi 11 (M2011K2C, M2011K2G)
Package include: 1 x battery
Restore the flagship performance of your Xiaomi Mi 11 with this BM4X 4710mAh replacement battery. Released in early 2021, the Xiaomi Mi 11 was the world’s first smartphone powered by the Snapdragon 888 chipset, featuring a 6.81-inch WQHD+ 120Hz AMOLED display and a 108MP triple camera system. The Mi 11 set a new standard for flagship Android devices with its combination of raw power, display quality, and premium design. After years of daily charging cycles, the original battery naturally degrades. This Li‑ion Polymer battery restores the full 4710mAh capacity, bringing back the all-day performance this flagship was designed for. Built with grade A cells and multi‑layer safety protection against overcharge, over‑discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Designed for Flagship Performance: The Xiaomi Mi 11 is built around a 4710mAh battery that originally provided reliable all‑day endurance for intensive tasks like gaming, video streaming, and 5G connectivity. The device supports 55W wired fast charging, 50W wireless fast charging, and 10W reverse wireless charging — industry‑leading speeds at the time of release. After years of use, the factory battery capacity degrades significantly. Common symptoms include: the device requiring more frequent charging, unexpected shutdowns at 15‑25% battery remaining, slower charging than when new, or visible battery swelling. This BM4X replacement battery restores the factory‑spec 4710mAh capacity, supporting the original 55W fast charging, 50W wireless charging, and reverse charging capabilities. Whether you are still using your Mi 11 as your daily driver or keeping it as a backup device, this replacement battery will give it a new lease on life.
Compatibility Note: Fits Xiaomi Mi 11 (model numbers M2011K2C and M2011K2G) only. Please confirm your battery model before ordering — BM4X is printed on your original battery. This battery is NOT compatible with Xiaomi Mi 11 Pro (uses BM55 battery), Xiaomi Mi 11 Ultra (uses BM55 battery), Xiaomi Mi 11 Lite, Xiaomi Mi 11T, Xiaomi Mi 10 series, Xiaomi 12 series, or other Xiaomi/Redmi models. The Mi 11 uses a distinct 4710mAh battery with specific dimensions and connector layout; using a different battery model may cause charging issues or incorrect battery reporting.

Discover more from Battery.qingsm.tech

Subscribe to get the latest posts sent to your email.

Reviews

There are no reviews yet.

Be the first to review “BM4X 4710mAh 3.87V Battery for Xiaomi Mi 11 Replacement”

Your email address will not be published. Required fields are marked *
To receive the "Verified Owner" badge, please use the same email address you used when placing your order.

Frequently Asked Questions

The BM4X 4710mAh battery replacement is compatible with Xiaomi Mi 11 (models M2011K2C and M2011K2G) only. If you need a BM4X battery for Xiaomi Mi 11 or a Xiaomi Mi 11 battery replacement, this BM4X 4710mAh battery is the exact match. For BM4X battery compatibility, please verify your device model in Settings > About Phone and confirm BM4X is printed on your original battery. This battery is NOT compatible with Xiaomi Mi 11 Pro, Mi 11 Ultra (both use BM55), Mi 11 Lite, Mi 11T, Mi 10 series, Xiaomi 12 series, or other Xiaomi models. If your current Xiaomi Mi 11 battery no longer holds charge as it used to or shuts down unexpectedly, this BM4X replacement battery will restore full performance and support the original 55W fast charging.

The BM4X 4710mAh battery for Xiaomi Mi 11 has a typical capacity of 4710mAh (18.2Wh) and a rated voltage of 3.87V, with a charge limit of 4.45V. This BM4X 3.87V 4710mAh Li‑ion Polymer battery is built with grade A cells and is CE, RoHS, and UN38.3 certified. For BM4X battery performance, the battery supports the original 55W wired fast charging, 50W wireless fast charging, and 10W reverse wireless charging. For best BM4X battery performance Xiaomi Mi 11, allow 2‑3 full charge cycles after installation to calibrate the battery meter. If your original battery now requires more frequent charging instead of lasting as it did when new, this replacement will restore the full 4710mAh capacity and fast charging speed.

Professional BM4X battery installation is recommended for Xiaomi Mi 11. The device has a sealed design that requires careful opening. To replace BM4X battery in Xiaomi Mi 11, the technician must heat the back cover to soften adhesive, carefully pry it open to avoid damaging the display or internal components, disconnect the battery's small 2‑pin connector, remove the old battery, and install the new BM4X battery before resealing. For BM4X battery installation, improper handling can damage the device's waterproofing or internal components. For BM4X battery health maintenance and Xiaomi Mi 11 battery care tips: 1) Use the original charger and cable for optimal charging. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 4710mAh cell. 3) Avoid exposing the phone to high temperatures (above 40°C / 104°F), especially while charging. 4) For long‑term storage (over 2 months), keep the battery at approximately 40‑60% charge. 5) Perform a full calibration cycle after installation: drain the phone until it auto‑shuts off, then charge uninterrupted to 100%. For BM4X battery care tips Xiaomi Mi 11, stop using immediately if the battery shows any swelling.

Related products

✅ Ready to order?

This battery is in stock and ready to ship within 3-7 days. 90-day warranty included.

👉 Add to Cart Now