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616-0640 220mAh 3.7V Li-ion Polymer replacement battery for Nano7 7G MP3 MB903LL/A, front view showing battery surface and small 2-pin connector

616-0640 220mAh 3.7V for Nano7 7G MP3 MB903LL/A Battery Replacement

Original price was: $27.99.Current price is: $22.99.

🔘 616-0640 220mAh 3.7V | 🔋 Li-ion Polymer | 📱 For Nano7 7G MP3 MB903LL/A

8 in stock

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SKU: 616-0640 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, 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

✅ 220mAh High Capacity – Restores full battery life for Nano7 7G MP3

✅ 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: 616-0640
Capacity: 220mAh (typical) / 0.81Wh
Rated voltage: 3.7V
Charge limit voltage: 4.2V
Battery type: Li-ion Polymer (Grade A cells)
Compatible with: Nano7 7G MP3 (MB903LL/A)
Package include: 1 x battery
Restore the reliable battery performance of your Nano7 7G MP3 player with this 616-0640 220mAh replacement battery. The Nano7 7G MP3 features a compact design and is built for portable music playback. After 1-2 years of regular charging cycles, the original battery’s capacity naturally declines. This Li-ion Polymer battery restores the full 220mAh capacity, bringing back the consistent playback 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 220mAh battery in the Nano7 7G MP3 originally provided dependable playback time for daily listening. After years of charging cycles, battery capacity degrades significantly. Common symptoms include: the device requiring more frequent charging than when new, unexpected shutdowns during playback, or visible battery swelling. This replacement restores the original endurance, allowing you to continue enjoying your music without interruption. The 616-0640 battery uses advanced high-density cell technology with multi-layer safety protection, ensuring reliable performance for years to come.
Compatibility Note: Fits Nano7 7G MP3 (MB903LL/A) only. Please confirm your battery model before ordering — 616-0640 is printed on your original battery. Verify that your current battery matches the model number, rated voltage (3.7V), and physical dimensions. Using an incorrect battery model may cause improper fit, charging issues, or incorrect battery reporting.

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Frequently Asked Questions

The 616-0640 battery for Nano7 7G MP3 is compatible with Nano7 7G MP3 (MB903LL/A) only. If you need a Nano7 7G MP3 battery replacement, this 616-0640 220mAh battery is the exact match. For 616-0640 battery for Nano7 7G MP3 compatibility, please verify your device model or check the label on your original battery — the model number 616-0640 is printed there. This battery is NOT compatible with other MP3 player models. If your Nano7 7G MP3 battery no longer holds charge as it did when new or shuts down during playback, this 616-0640 replacement battery will restore the full performance.

The 616-0640 220mAh battery for Nano7 7G MP3 has a typical capacity of 220mAh (0.81Wh) and a rated voltage of 3.7V, with a charge limit of 4.2V. This 616-0640 3.7V 220mAh Li-ion Polymer battery is built with Grade A cells and is CE, RoHS, and UN38.3 certified. 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 Nano7 7G MP3 battery installation is recommended. The Nano7 7G MP3 has a sealed design with an internal battery. To replace Nano7 7G MP3 battery 616-0640, the technician must carefully open the device following proper procedures, disconnect the battery's small 2-pin connector, remove the old battery, and install the new 616-0640 battery before reassembling. For 616-0640 battery installation Nano7 7G MP3, improper handling can damage the device. Third-party repair shops typically charge $15-25 for labor. For Nano7 7G MP3 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 220mAh 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 Nano7 7G MP3 battery care tips, stop using immediately if the battery shows any swelling.

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This battery is in stock and ready to ship within 3-7 days. 90-day warranty included.

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