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HB27J0B4EGW-12 10000mAh 3.91V Li-ion Polymer replacement battery for MatePad Air BKY-W10 BKY-W20, front view showing battery surface and small 2-pin connector

HB27J0B4EGW-12 10000mAh 3.91V Battery for MatePad Air BKY-W10 BKY-W20 Replacement

Original price was: $62.99.Current price is: $54.99.

🔘 HB27J0B4EGW-12 10000mAh 3.91V | 🔋 Li-ion Polymer | 📱 For MatePad Air BKY-W10 BKY-W20 12-15H Battery Life

8 in stock

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SKU: HB27J0B4EGW-12 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

✅ 10000mAh High Capacity – Restores full battery life for MatePad Air

✅ 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: HB27J0B4EGW-12
Capacity: 10000mAh (typical) / 39.10Wh
Rated voltage: 3.91V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer (Grade A cells, 2S dual-cell configuration)
Compatible with: MatePad Air (BKY-W10 / BKY-W20)
Package include: 1 x battery
Restore the exceptional battery performance of your MatePad Air with this HB27J0B4EGW-12 10000mAh replacement battery. The MatePad Air is designed for users who demand premium tablet performance for productivity, creativity, and entertainment. After 1-2 years of regular charging cycles, the original battery’s capacity naturally degrades. This Li-ion Polymer battery restores the full 10000mAh capacity, bringing back the all-day and multi-day endurance this tablet 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 Extended Tablet Battery Life: The MatePad Air is engineered for users who value long-lasting battery performance in a lightweight premium tablet. The 10000mAh battery originally provided approximately 12-15 hours of continuous video playback and up to 2 days of mixed usage including browsing, streaming, productivity applications, and creative work. After years of charging cycles, battery capacity degrades significantly. Common symptoms include: the tablet requiring daily charging instead of lasting through the day, 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 enjoying the MatePad Air’s reliable battery life. The HB27J0B4EGW-12 battery uses advanced high-density cell technology with multi-layer safety protection, ensuring reliable performance for years to come.
Compatibility Note: Fits MatePad Air models BKY-W10 and BKY-W20 only. Please confirm your battery model before ordering — HB27J0B4EGW-12 is printed on your original battery. This battery is NOT compatible with MatePad Pro series, MatePad T series, or other tablet models. The MatePad Air uses a specific 10000mAh battery with precise dimensions and dual-cell configuration; using a different battery model may cause improper fit, charging issues, or incorrect battery reporting.

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Frequently Asked Questions

The HB27J0B4EGW-12 battery for MatePad Air is compatible with MatePad Air BKY-W10 and BKY-W20 only. If you need a MatePad Air battery replacement for BKY-W10 or BKY-W20, this HB27J0B4EGW-12 10000mAh battery is the exact match. For HB27J0B4EGW-12 battery for MatePad Air compatibility, please verify your device model in Settings > About Tablet. This battery is NOT compatible with MatePad Pro series, MatePad T series, or other tablet models. If your MatePad Air battery no longer lasts a full day on a single charge or shuts down unexpectedly at 15-20%, this HB27J0B4EGW-12 replacement battery will restore the full performance.

The HB27J0B4EGW-12 10000mAh battery for MatePad Air has a typical capacity of 10000mAh (39.10Wh) and a rated voltage of 3.91V, with a charge limit of 4.45V. This HB27J0B4EGW-12 3.91V 10000mAh Li-ion Polymer battery features a 2S dual-cell configuration — two 3.91V cells connected in series produce the combined 10000mAh capacity at the rated 3.91V output. It is built with Grade A cells and is CE, RoHS, and UN38.3 certified. For MatePad Air battery life after replacement, expect approximately 12-15 hours of continuous video playback on a single charge. The MatePad Air 10000mAh battery performance provides exceptional endurance for streaming, gaming, creative work, and productivity tasks. For best performance, allow 2-3 full charge cycles after installation to calibrate the battery meter. If your original battery now requires daily charging instead of lasting through the day, this replacement will restore the original endurance.

Professional MatePad Air battery installation is recommended. The MatePad Air has a sealed design with strong adhesive around the display. To replace MatePad Air battery BKY-W10, the technician must heat the screen assembly 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 HB27J0B4EGW-12 battery before resealing the device. For HB27J0B4EGW-12 battery installation MatePad Air, improper handling can damage the display or compromise the tablet's sealing. Third-party repair shops typically charge $30-50 for labor. For MatePad Air battery health maintenance: 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 10000mAh cell. 3) Avoid exposing the tablet 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 tablet until it auto-shuts off, then charge uninterrupted to 100%. For MatePad Air battery care tips, stop using immediately if the battery shows any swelling.

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