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BM47 4000mAh 3.85V Li-ion Polymer replacement battery for Redmi 3, 3S, 3X, 3 Pro, and 4X, front view showing battery surface and small 2-pin connector
BM47 4000mAh 3.85V replacement battery for Redmi 3, 3S, 3X, 3 Pro, and 4X, back view showing model number BM47, capacity 4000mAh, and voltage 3.85V on spec label

BM47 4000mAh 3.85V Battery for Redmi 3/3S/3X/3 Pro/4X Replacement

Original price was: $22.99.Current price is: $16.99.

🔘 BM47 4000mAh 3.85V | 🔋 Li-ion Polymer | 📱 For Redmi 3/3S/3X/3 Pro/4X 5V/2A Charging

8 in stock

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SKU: BM47 Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

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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.

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Description

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

✅ 4000mAh High Capacity – Restores full battery life for Redmi 3/3S/3X/3 Pro/4X

✅ 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: BM47
Capacity: 4000mAh (typical) / 15.4Wh
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Redmi 3, Redmi 3S, Redmi 3X, Redmi 3 Pro, Redmi 4X
Package include: 1 x battery
Restore the reliable performance of your Redmi device with this BM47 4000mAh replacement battery. The Redmi 3 series — including the Redmi 3, 3S, 3X, and 3 Pro — launched between 2016 and 2017, featuring a 5-inch HD display and a 4100mAh battery that set a benchmark for battery life in its class. The Redmi 4X, released in 2017, features a 5-inch HD display and the Qualcomm Snapdragon 435 processor. Both series are known for their solid build quality and dependable endurance. After years of daily charging cycles, the factory battery capacity naturally degrades. This Li‑ion Polymer battery restores the full 4000mAh capacity, bringing back the dependable endurance these devices were 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 Reliable Daily Performance: The Redmi 3 series and 4X are built around a 4000mAh battery that delivers solid all‑day endurance. After extended use, the original 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 BM47 replacement battery restores the factory‑spec 4000mAh capacity and supports the original 5V/2A charging. The battery uses high‑density cell technology with precise voltage control, ensuring stable output and compatibility with the device’s original charging circuitry.
Compatibility Note: Fits Redmi 3, Redmi 3S, Redmi 3X, Redmi 3 Pro, and Redmi 4X only. Please confirm your battery model before ordering — BM47 is printed on your original battery. This battery is NOT compatible with Redmi 4, Redmi 4A, Redmi 4 Pro, Redmi Note series, or other Xiaomi/Redmi models. These devices use a distinct 4000mAh battery with specific dimensions and connector layout; using a different battery model may cause charging issues or incorrect battery reporting.

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Frequently Asked Questions

The BM47 4000mAh battery replacement is compatible with Redmi 3, Redmi 3S, Redmi 3X, Redmi 3 Pro, and Redmi 4X. If you need a BM47 battery for Redmi 3S or a BM47 battery for Redmi 4X, this replacement battery is the exact match. For BM47 battery compatibility, please verify your battery model printed on the original unit — BM47 is the correct model for these devices. This battery is NOT compatible with Redmi 4, Redmi 4A, Redmi 4 Pro, Redmi Note series, or other Xiaomi/Redmi models. If your current Redmi 3 battery or Redmi 3X battery now drains quickly or shuts down unexpectedly, this BM47 3.85V 4000mAh Li‑ion Polymer battery will restore full endurance and reliability.

The BM47 4000mAh battery for Redmi 3, 3S, 3X, 3 Pro, and 4X has a typical capacity of 4000mAh (15.4Wh) and a rated voltage of 3.85V, with a charge limit of 4.4V. This BM47 3.85V 4000mAh Li‑ion Polymer battery is built with grade A cells and is CE, RoHS, and UN38.3 certified. For BM47 battery performance, the battery supports the original 5V/2A charging of these Redmi devices. For best BM47 battery performance Redmi 3 Pro, allow 2‑3 full charge cycles after installation to calibrate the battery meter. If your original Redmi 4X battery now requires more frequent charging instead of lasting as it did when new, this replacement will restore the full 4000mAh capacity and stable voltage output.

Professional BM47 battery installation is recommended for Redmi 3, 3S, 3X, 3 Pro, and 4X. These devices have a sealed design with strong adhesive. To replace BM47 battery in Redmi 3S or replace BM47 battery in Redmi 4X, 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 BM47 battery before resealing. For BM47 battery installation, improper handling can damage the display or internal components. For BM47 battery health maintenance and Redmi 3 battery care tips: 1) Use the original charger and cable for optimal 5V/2A charging. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 4000mAh 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 BM47 battery care tips Redmi 4X, stop using immediately if the battery shows any swelling.

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