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MC50 6000mAh 3.87V Li-ion Polymer replacement battery for Lenovo K12 Pro XT2091-4 and XT2091-7, front view showing battery surface and small 2-pin connector
MC50 6000mAh 3.87V replacement battery for Lenovo K12 Pro XT2091-4, back view showing model number MC50, capacity 6000mAh, and voltage 3.87V on spec label

MC50 6000mAh 3.87V Battery for Lenovo K12 Pro XT2091-4 XT2091-7 Replacement

Original price was: $29.99.Current price is: $24.99.

🔘 MC50 6000mAh 3.87V | 🔋 Li-ion Polymer | 📱 For Lenovo K12 Pro XT2091-4 / XT2091-7

8 in stock

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SKU: MC50 Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

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Warranty Period90 days from delivery15-30 days from order confirmation
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🔋 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

✅ 6000mAh High Capacity – Restores full battery life for Lenovo K12 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: MC50 / SB18C87844
Capacity: 6000mAh (typical) / 5640mAh (rated) / 22.3Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Lenovo K12 Pro (XT2091-4 / XT2091-7 / XT2091-8), Motorola Moto G9 Power (XT2091-3), Motorola Moto G40 Fusion, Motorola Moto G60, Nokia G60 5G (TA-1490)
Package include: 1 x battery
Restore the reliable battery performance of your Lenovo K12 Pro with this MC50 6000mAh replacement battery. The Lenovo K12 Pro features a 6.8-inch HD+ Max Vision display, powered by the Qualcomm Snapdragon 662 processor with 4GB RAM, and supports 20W fast charging with 2.5W reverse charging. After 1-2 years of regular charging cycles, the original battery’s capacity naturally declines. This Li-ion Polymer battery restores the full 6000mAh 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 6000mAh battery in the Lenovo K12 Pro originally provided dependable endurance for streaming, gaming, photography with the 64MP triple camera system, and daily tasks, supporting 20W fast charging for quick recharging. 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 Lenovo K12 Pro without interruption. The MC50 battery uses advanced high-density cell technology with multi-layer safety protection, ensuring reliable performance for years to come.
Compatibility Note: Fits Lenovo K12 Pro (XT2091-4 / XT2091-7 / XT2091-8), Motorola Moto G9 Power (XT2091-3), Motorola Moto G40 Fusion, Motorola Moto G60, and Nokia G60 5G (TA-1490) only. Please confirm your battery model before ordering — MC50 is printed on your original battery. This battery is NOT compatible with other Motorola or Lenovo models. The Lenovo K12 Pro uses a specific 6000mAh battery with precise dimensions; using a different battery model may cause improper fit, charging issues, or incorrect battery reporting.

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Frequently Asked Questions

The MC50 battery for Lenovo K12 Pro is compatible with Lenovo K12 Pro (XT2091-4 / XT2091-7 / XT2091-8), Motorola Moto G9 Power (XT2091-3), Motorola Moto G40 Fusion, Motorola Moto G60, and Nokia G60 5G (TA-1490). If you need a Lenovo K12 Pro battery replacement, this MC50 6000mAh battery is the exact match. For MC50 battery for Lenovo K12 Pro compatibility, please verify your device model in Settings > About Phone or check the label on your original battery — the model number MC50 is printed there. This battery is NOT compatible with other Motorola or Lenovo models. If your Lenovo K12 Pro battery no longer holds charge as it did when new or shuts down unexpectedly, this MC50 replacement battery will restore the full performance.

The MC50 6000mAh battery for Lenovo K12 Pro has a typical capacity of 6000mAh (rated 5640mAh, 22.3Wh) and a rated voltage of 3.87V, with a charge limit of 4.45V. This MC50 3.87V 6000mAh Li-ion Polymer battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. The Lenovo K12 Pro battery supports 20W fast charging and 2.5W reverse charging. For best performance, allow 2-3 full charge cycles after installation to calibrate the battery meter. If your original battery now requires more frequent charging than when new, this replacement will restore the original capacity.

Professional Lenovo K12 Pro battery installation is recommended. The Lenovo K12 Pro has a sealed design with an internal battery. To replace Lenovo K12 Pro battery MC50, the technician must heat the back cover to soften adhesive, carefully pry it open to avoid damaging the display or frame, disconnect the battery's small 2-pin connector, remove the old battery, and install the new MC50 battery before resealing the device. For MC50 battery installation Lenovo K12 Pro, improper handling can damage the display or compromise the device's sealing. Third-party repair shops typically charge $15-30 for labor. For Lenovo K12 Pro battery health maintenance: 1) Use the original 20W charger and cable for optimal charging. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 6000mAh 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 Lenovo K12 Pro battery care tips, stop using immediately if the battery shows any swelling.

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