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BL-45CX 4600mAh 3.91V Li-ion Polymer replacement battery for Infinix Note 40 Pro+ 5G and Note 40 Pro Plus 5G X6851B, front view showing battery surface and small 2-pin connector

BL-45CX 4600mAh 3.91V Battery for Infinix Note 40 Pro+ / Note 40 Pro Plus 5G X6851B Replacement

Original price was: $42.99.Current price is: $37.99.

🔘 BL-45CX 4600mAh 3.91V | 🔋 Li-ion Polymer | 📱 For Infinix Note 40 Pro+ / Note 40 Pro Plus 5G X6851B

8 in stock

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SKU: BL-45CX Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

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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, Czech Republic, Denmark, Estonia, Hungary, Ireland, Italy, Luxembourg, Netherlands, Norway, Poland, Portugal, Slovakia, Spain, Sweden, Switzerland, Ukraine$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: New – Factory-tested quality & Warranty

✅ 4600mAh High Capacity – Restores full battery life for Infinix Note 40 Pro+ / Note 40 Pro Plus 5G

✅ 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: BL-45CX
Capacity: 4600mAh (typical) / 17.99Wh
Rated voltage: 3.91V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Infinix Note 40 Pro+ 5G, Infinix Note 40 Pro Plus 5G (X6851B)
Package include: 1 x battery
Restore the reliable battery performance of your Infinix Note 40 Pro+ with this BL-45CX 4600mAh replacement battery. The Note 40 Pro+ 5G features a 6.78-inch FHD+ curved AMOLED display with 120Hz refresh rate, powered by the MediaTek Dimensity 7020 processor with 12GB RAM and 256GB storage. After 1-2 years of regular charging cycles, the original battery’s capacity naturally declines. This Li-ion Polymer battery restores the full 4600mAh capacity, bringing back the consistent daily endurance your device was built 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 Use: The 4600mAh battery in the Note 40 Pro+ 5G originally provided dependable endurance for streaming on the curved AMOLED display, gaming, photography with the 108MP OIS camera system, and daily tasks, supporting 100W wired fast charging (50% in 12 minutes) and 20W wireless charging. After years of charging cycles, battery capacity degrades significantly. Common symptoms include: the device requiring more frequent charging than when new, unexpected shutdowns at 15-20% battery remaining, slower charging than when new, or visible battery swelling. This replacement restores the original endurance, allowing you to continue using your Infinix Note 40 Pro+ without interruption. The BL-45CX battery uses advanced high-density cell technology with multi-layer safety protection, ensuring reliable performance for years to come.
Compatibility Note: Fits Infinix Note 40 Pro+ 5G and Infinix Note 40 Pro Plus 5G (X6851B) only. Please confirm your battery model before ordering — BL-45CX is printed on your original battery. Verify that your current battery matches the model number, rated voltage (3.91V), and capacity (4600mAh / 17.99Wh). This device features a non-removable battery design — professional installation is recommended. Using an incorrect battery model may cause improper fit, charging issues, or incorrect battery reporting.

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Frequently Asked Questions

The BL-45CX 4600mAh battery for Infinix Note 40 Pro+ is compatible with Infinix Note 40 Pro+ 5G and Infinix Note 40 Pro Plus 5G (X6851B). If you need an Infinix Note 40 Pro+ battery replacement, this BL-45CX 4600mAh battery is the exact match. For BL-45CX battery for Infinix Note 40 Pro+ compatibility, please verify your device model in Settings > About Phone or check the label on your original battery — the model number BL-45CX is printed there. The Infinix Note 40 Pro+ 5G features a 6.78-inch 120Hz AMOLED display and Dimensity 7020 processor. If your Infinix Note 40 Pro+ battery no longer holds charge as it did when new or shuts down unexpectedly, this BL-45CX replacement battery will restore the full performance.

The BL-45CX 4600mAh battery for Infinix Note 40 Pro+ has a typical capacity of 4600mAh (17.99Wh) and a rated voltage of 3.91V, with a charge limit of 4.45V. This BL-45CX 3.91V 4600mAh Li-ion Polymer battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. BL-45CX battery specifications include support for 100W wired fast charging and 20W wireless charging. The battery supports 100W wired charging that reaches 50% in just 12 minutes. For best performance, allow 2-3 full charge cycles after installation to calibrate the battery meter. If your original Infinix Note 40 Pro+ battery now requires more frequent charging than when new, this replacement will restore the original capacity.

Professional Infinix Note 40 Pro+ battery installation is recommended. The Infinix Note 40 Pro+ has a sealed non-removable battery design. To replace Infinix Note 40 Pro+ battery BL-45CX, the technician must heat the back cover to soften adhesive, carefully pry it open to avoid damaging the curved AMOLED display or frame, disconnect the battery's small 2-pin connector, remove the old battery, and install the new BL-45CX battery before resealing the device. For BL-45CX battery installation Infinix Note 40 Pro+, improper handling can damage the display or compromise the device's sealing. Third-party repair shops typically charge $20-35 for labor. For Infinix Note 40 Pro+ battery health maintenance: 1) Use the original 100W charger and cable for optimal charging. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 4600mAh cell. 3) Avoid exposing the device 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 device until it auto-shuts off, then charge uninterrupted to 100%. For Infinix Note 40 Pro+ battery care tips, stop using immediately if the battery shows any swelling.

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