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BM4A 4050mAh 3.85V Li-ion Polymer replacement battery for Xiaomi Redmi Pro, front view showing battery surface and small 2-pin connector
BM4A 4050mAh 3.85V replacement battery for Xiaomi Redmi Pro, back view showing model number BM4A, capacity 4050mAh, and voltage 3.85V on spec label

BM4A 4050mAh 3.85V Li-ion Polymer Replacement Battery for Xiaomi Redmi Pro 2016 5V/2A 10W Charging

Original price was: $22.99.Current price is: $15.99.

🔘 BM4A 4050mAh 3.85V | 🔋 Li-ion Polymer | 📱 For Xiaomi Redmi Pro 2016 Dual-Camera 5V/2A Charging

8 in stock

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SKU: BM4A Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

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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 $6.00 (approx. €5.20) 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

✅ 4050mAh High Capacity – Restores full battery life for Xiaomi Redmi Pro

✅ 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: BM4A
Capacity: 4050mAh / 15.6Wh
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Xiaomi Redmi Pro (2016)
Package include: 1 x battery
Bring your Xiaomi Redmi Pro back to life with this BM4A 4050mAh replacement battery. Released in 2016, the Redmi Pro was a milestone device for Xiaomi — it was the first Redmi phone with a dual-camera setup (13MP + 5MP for depth effects), featuring a premium brushed metal body that was a departure from Redmi’s usual plastic builds. The phone also introduced a 5.5-inch OLED display and a flagship-grade Helio X20/X25 processor. This Li-ion Polymer battery restores the full 4050mAh capacity, bringing back the dependable battery life that made the Redmi Pro stand out in the competitive mid-range market. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified.
Why Replace Your Redmi Pro Battery Now — A Smart Financial Decision: The Redmi Pro was known for its generous 4050mAh battery — one of the largest in its class in 2016. After 8-9 years of use, the original battery has almost certainly degraded significantly. Typical symptoms include: the phone requiring two or three charges per day, unexpected shutdowns at 20-40% battery, the charge level jumping erratically, or the phone taking longer than usual to charge. Replacing the battery for around $15-20 is far more economical than buying a new phone, especially if you’re happy with the Redmi Pro’s performance for basic tasks like calls, messaging, music, and light browsing. The Helio X20 processor and OLED display remain perfectly capable for daily use in 2026, and with a fresh BM4A battery, the Redmi Pro can easily last another 2-3 years as a reliable secondary or backup phone. The 4050mAh capacity is still competitive — many 2026 budget phones still ship with 4000-5000mAh batteries, so a fresh Redmi Pro battery delivers comparable all-day battery life to modern budget devices.
Compatibility Note: Fits Xiaomi Redmi Pro (2016) only. Please confirm your battery model before ordering — BM4A is printed on your original battery. This battery is NOT compatible with Redmi Note series, Redmi 4/5/6 series, or any other Xiaomi models. The Redmi Pro has a unique battery shape and connector orientation that differs from other Redmi phones of the same era. If your phone is not a Redmi Pro (look for the dual-camera on the back and brushed metal body), this battery will not fit.

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Frequently Asked Questions

The BM4A battery is compatible exclusively with the Xiaomi Redmi Pro (2016). If you need a Xiaomi Redmi Pro battery replacement, this BM4A 4050mAh replacement battery is the exact match. The Redmi Pro features a 5.5-inch OLED display, dual rear cameras (13MP + 5MP), a brushed metal body, and was the first Redmi device to include a fingerprint sensor. For BM4A battery for Xiaomi Redmi Pro, please verify your battery model before ordering — BM4A is printed on your original battery. This battery is NOT compatible with Redmi Note 3, Redmi Note 4, Redmi 3S, Redmi 4, Redmi 5, Redmi 6, or any other Xiaomi models. If your Redmi Pro battery drains quickly, shuts down unexpectedly at 20-30% charge, or requires multiple daily charges, this BM4A replacement battery will restore the original battery performance.

The BM4A 4050mAh battery for Xiaomi Redmi Pro has a capacity of 4050mAh (15.6Wh) and a rated voltage of 3.85V, with a charge limit voltage of 4.4V. This BM4A 3.85V 4050mAh Li-ion Polymer battery supports standard 10W charging (5V/2A) — the Redmi Pro does not support fast charging beyond this specification. A full charge from 0% to 100% takes approximately 2-2.5 hours with the original charger. For Redmi Pro 4050mAh battery life expectations, with a fresh replacement battery you can expect: 8-10 hours of mixed usage (social media, messaging, calls), 6-7 hours of video playback, 10-12 hours of music playback with screen off, and 4-5 hours of light gaming. Standby time with a fresh BM4A battery is excellent — the Redmi Pro can last 5-7 days in idle mode with occasional checks. This battery is built with grade A cells and is CE, RoHS, and UN38.3 certified. For best charging results, use a standard 5V/2A charger — avoid using Quick Charge (QC) or Power Delivery (PD) chargers as they may not properly negotiate with the Redmi Pro's older charging circuit.

Professional Xiaomi Redmi Pro battery installation is recommended. The Redmi Pro has a sealed metal unibody design that requires heating to soften adhesive and careful prying to separate the display assembly — the battery is not accessible from the back cover. Unlike modern phones with glass backs, the Redmi Pro's metal body is more durable but harder to open without proper tools. To replace Redmi Pro battery, the display must be carefully lifted, which risks damaging the OLED panel if not done correctly. For BM4A battery installation Redmi Pro, the process is significantly more complex than on phones with removable backs. Third-party repair shops typically charge $20-30 for labor on this model. For Redmi Pro battery health maintenance: 1) Use only a standard 5V/2A charger — avoid QC/PD fast chargers. 2) Keep battery level between 20% and 80% for daily use to maximize lifespan. 3) Avoid exposing the phone to high temperatures (above 40°C / 104°F). 4) For long-term storage (over 2 months), keep the battery at approximately 60% charge. 5) Perform a full calibration cycle after installation: drain the phone until it auto-shuts off, then charge uninterrupted to 100% using a standard 5V/2A charger. For Redmi Pro battery health tips, this calibration helps MIUI accurately report battery percentage. Stop using immediately if the battery shows any swelling — swelling in a metal unibody phone can permanently deform the chassis and damage the display.

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