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C906646400L 4000mAh 3.85V Li-ion replacement battery for BLU devices, front view on white background
C906646400L 4000mAh 3.85V replacement battery for BLU devices, back view showing model number C906646400L and capacity 4000mAh

C906646400L 4000mAh 3.85V Battery for BLU C906646400L Compatible Models Replacement

Original price was: $24.99.Current price is: $18.99.

🔘 C906646400L 4000mAh 3.85V | 🔋 Li-ion Polymer | 📱 For BLU C906646400L Compatible Models

8 in stock

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SKU: C906646400L Category: Tags: , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

Unlike marketplace sellers with short buyer protection windows, we handle claims directly — no automated disputes, no endless back-and-forth.

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.

🔋 Can't find your battery model? Use our FREE Battery Lookup Service – tell us your device and we'll find a match within 24 hours. 👉 battery.qingsm.tech/find-my-battery

Description

✅ Condition: Brand New – Never used, factory-tested quality

✅ 4000mAh High Capacity – Restores full battery life for BLU devices using C906646400L

✅ CE / RoHS 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

⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.

Battery model: C906646400L
Capacity: 4000mAh
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: BLU devices using C906646400L battery model
Package include: 1 x battery
Restore the reliable power of your BLU device with this C906646400L 4000mAh replacement battery. BLU Products is known for offering affordable unlocked smartphones with practical features for everyday use. The C906646400L battery is used across multiple BLU models, providing consistent power for calls, messaging, social media, and light app usage. After years of daily charging cycles, the original battery capacity naturally degrades. This Li-ion Polymer battery restores the full 4000mAh capacity, bringing back the dependable daily performance your BLU phone was designed for. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE and RoHS certified for safety compliance.
Easy Compatibility Verification — Check Your Original Battery: BLU devices use various battery models across different phone series. The C906646400L battery is a specific model used in certain BLU smartphones. To confirm compatibility, simply power off your device, remove the back cover (most BLU phones feature removable back covers), take out the existing battery, and check the model number printed on the label. If it shows C906646400L, this replacement battery is the correct match. This straightforward verification process ensures you receive the right battery for your device. Common signs that the original battery needs replacement include: the phone requiring multiple charges per day, unexpected shutdowns at 15-25% battery remaining, slower charging than when new, or visible battery swelling. This replacement restores the original performance, extending the useful life of your BLU device without the cost of a new phone.
Compatibility Note: Designed for BLU devices that use the C906646400L battery model. Please remove your old battery and check the model number printed on the label before ordering. If your original battery shows C906646400L, this replacement is the correct match. This battery is NOT compatible with BLU devices that use different battery models such as C906646500L, C906646600L, or other battery codes. Always verify your original battery model before purchasing.

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Frequently Asked Questions

The C906646400L battery for BLU devices is designed for BLU phones that use this specific battery model. To determine if this C906646400L battery is compatible with your BLU device, please remove your old battery and check the model number printed on the label. If the label shows C906646400L, this 4000mAh replacement battery is the correct match for your BLU smartphone. For C906646400L battery compatibility with BLU devices, the only reliable method is to verify the original battery model. This battery is NOT compatible with BLU devices using different battery model numbers. If your BLU battery drains quickly or won't hold a charge, and your original battery shows C906646400L, this replacement battery will restore full performance.

The C906646400L 4000mAh battery for BLU compatible models has a capacity of 4000mAh and a rated voltage of 3.85V, with a charge limit of 4.4V. This C906646400L 3.85V 4000mAh Li-ion Polymer battery is built with grade A cells and is CE and RoHS certified. For BLU device battery life after replacement with C906646400L, expect approximately a full day of moderate use on a single charge. The BLU C906646400L 4000mAh battery performance provides reliable endurance for calls, messaging, and light browsing. Charging the BLU battery with a standard charger takes approximately 2-3 hours for a full charge. For best performance, allow 2-3 full charge cycles after installation to calibrate the battery meter. If your original battery now requires daily multiple charges or shuts down at 15-25% remaining, this replacement will restore the original battery life.

Replacing the BLU battery is straightforward because most BLU phones feature a removable back cover. For C906646400L battery installation in BLU devices: 1) Power off the phone completely. 2) Remove the back cover by prying from the notch at the bottom edge. 3) Locate the C906646400L battery. 4) Lift the old battery out — it is not glued down. 5) Insert the new C906646400L battery, ensuring the small 2-pin connector aligns correctly. 6) Snap the back cover back on. For BLU C906646400L battery replacement guide, no special tools or heat gun required — this is one of the easiest DIY replacements available. For BLU battery health maintenance: 1) Use only a standard 5V/1A or 5V/2A charger. 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 40-60% charge. 5) Perform a full calibration cycle after installation: drain the phone until it auto-shuts off, then charge uninterrupted to 100%. For BLU battery care tips, stop using immediately if the battery shows any swelling.

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