Description
Battery model: 703040 (dimensions: 7.0 × 30 × 40mm)
Capacity: 1000mAh / 3.7Wh
Nominal voltage: 3.7V
Charge limit voltage: 4.2V
Discharge cut-off voltage: 2.75V
Standard charge/discharge current: 0.5C (500mA)
Max discharge current: 1C (1000mA)
Operating temperature: Charge 0-45°C / Discharge -20-60°C
Cycle life: 500 cycles (retain 80% capacity)
Weight: approx. 20g
Features: Built-in protection board (overcharge, over-discharge, short circuit protection)
Applications: Bluetooth earphones, MP3 players, e-cigarettes, small speakers, GPS devices, children’s toys, DIY projects, and other portable electronics
Package include: 1 x battery
Power your small electronic devices with this 703040 1000mAh 3.7V Li-ion battery. Featuring a built-in protection board, it provides safe and stable performance while preventing overcharge, over-discharge, and short circuits. The compact 7.0×30×40mm size makes it ideal for portable electronics, DIY projects, and device repairs. Made with grade A cells. CE, RoHS, and UN38.3 certified for safety compliance.
Compatibility Note: This is a universal battery. Please verify your device’s battery dimensions (7.0×30×40mm), voltage (3.7V), and connector type before purchasing. Soldering required for installation — does not come with pre-attached wires or connector.
Battery Care Tips: Do not disassemble, crush, or expose to high temperatures. Avoid full discharge (keep above 3.0V). Use a compatible 4.2V Li-ion charger. Store at approximately 50% charge when not in use for extended periods. If swelling occurs, stop use immediately.
✅ Condition: Brand New – Never used, factory-tested quality
✅ Built-in Protection Board – Overcharge, over-discharge, short circuit protection
✅ 1000mAh Capacity – 500 cycle life (80% retention)
✅ CE / RoHS / UN38.3 Certified – Safety tested
✅ 90-Day Warranty – Hassle-free replacement
✅ Ships in 3-7 days with tracking – Fast delivery
🛡️ Shipping Protection Available at Checkout – Covered against loss, damage, or theft
✅ PayPal Buyer Protection included – Secure checkout
⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.
✅ 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 Period | 90 days from delivery | 15-30 days from order confirmation |
| When It Starts | 📦 Upon delivery | ⚠️ Upon order confirmation (even before you receive it) |
| Claims Handling | We do it directly — email us | Automated dispute system, seller dependent |
| After Window Expires | Still can contact us for support | No 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; actual delivery may be affected by customs, weather, or other unforeseen circumstances.
| Destination | Freight (USD) | Est. Delivery Time |
|---|---|---|
| United States | $7.80 | 8-20 days |
| Canada | $6.80 | 18-45 days |
| Mexico | $10.00 | 30-60 days |
| Germany, France, United Kingdom, Greece | $6.50 | 18-45 days |
| Ireland, Austria, Belgium, Poland, Denmark, Switzerland, Portugal, Norway, Slovakia, Spain, Hungary, Italy, Czech Republic, Luxembourg, Netherlands, Sweden, Cyprus | $8.00 | 18-45 days |
| Croatia, Finland, Lithuania, Latvia, Slovenia | $8.00 | 30-60 days |
| Romania | $14.00 | 30-60 days |
| South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan | $7.50 | 18-45 days |
| United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil | $18.00 | 25-60 days |
* Delivery times are estimates; actual delivery may be affected by customs or other factors. If your country is not listed, we are currently unable to ship batteries to that destination.
🇧🇷 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.
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