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C39 5200mAh 3.87V Li-ion Polymer replacement battery for CUBOT X70, front view showing battery surface and small 2-pin connector
C39 5200mAh 3.87V replacement battery for CUBOT X70, back view showing model number C39, capacity 5200mAh, and voltage 3.87V on spec label

C39 5200mAh 3.87V Battery for CUBOT X70 Replacement

Original price was: $35.99.Current price is: $29.99.

🔘 C39 5200mAh 3.87V | 🔋 Li-ion Polymer | 📱 For CUBOT X70

8 in stock

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SKU: C39 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, 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

✅ 5200mAh High Capacity – Restores full battery life for CUBOT X70

✅ 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: C39
Capacity: 5200mAh (typical) / 20.124Wh
Rated voltage: 3.87V
Charge limit voltage: 4.45V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: CUBOT X70
Package include: 1 x battery
Restore the reliable battery performance of your CUBOT X70 with this C39 5200mAh replacement battery. The CUBOT X70 features a 6.58-inch IPS display with 120Hz refresh rate, powered by the MediaTek Helio G99 processor with 12GB RAM and 256GB storage, running Android 13. After 1-2 years of regular charging cycles, the original battery’s capacity naturally declines. This Li-ion Polymer battery restores the full 5200mAh 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 5200mAh battery in the CUBOT X70 originally provided dependable endurance for streaming on the 120Hz display, gaming, photography with the 100MP camera system, and daily tasks, supporting 18W 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 CUBOT X70 without interruption. The C39 battery uses advanced high-density cell technology with multi-layer safety protection, ensuring reliable performance for years to come.
Compatibility Note: Fits CUBOT X70 only. Please confirm your battery model before ordering — C39 is printed on your original battery. This battery is also identified by SKU 24BA10150558_Te. Verify that your current battery matches the model number, rated voltage (3.87V), and capacity (5200mAh / 20.124Wh). 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 C39 5200mAh battery for CUBOT X70 is compatible with CUBOT X70 only. If you need a CUBOT X70 battery replacement, this C39 5200mAh battery is the exact match. For C39 battery for CUBOT X70 compatibility, please verify your device model in Settings > About Phone or check the label on your original battery — the model number C39 is printed there. This battery is also identified by SKU 24BA10150558_Te. The CUBOT X70 features a 6.58-inch 120Hz display and Helio G99 processor. If your CUBOT X70 battery no longer holds charge as it did when new or shuts down unexpectedly, this C39 replacement battery will restore the full performance.

The C39 5200mAh battery for CUBOT X70 has a typical capacity of 5200mAh (20.124Wh) and a rated voltage of 3.87V, with a charge limit of 4.45V. This C39 3.87V 5200mAh Li-ion Polymer battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. C39 battery specifications include a white color finish. For best performance, allow 2-3 full charge cycles after installation to calibrate the battery meter. If your original CUBOT X70 battery now requires more frequent charging than when new, this replacement will restore the original capacity.

Professional CUBOT X70 battery installation is recommended. The CUBOT X70 has a sealed design with an internal battery. To replace CUBOT X70 battery C39, 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 C39 battery before resealing the device. For C39 battery installation CUBOT X70, improper handling can damage the display or compromise the device's sealing. Third-party repair shops typically charge $15-25 for labor. For CUBOT X70 battery health maintenance: 1) Use the original 18W charger and cable for optimal charging. 2) Keep battery level between 20% and 80% for daily use to maximize the lifespan of the 5200mAh 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 CUBOT X70 battery care tips, stop using immediately if the battery shows any swelling.

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