Description
Battery model: KM602030
Battery capacity: 300mAh / 1.11Wh
Rated voltage: 3.7V
Charge limit voltage: 4.2V
Battery type: Li-Polymer (LiPo)
Connection type: Metal contacts / solder pads (positive and negative poles)
Dimensions: 6.0mm x 20mm x 30mm (Thickness x Width x Length)
Package include: 1 x battery
This KM602030 300mAh 3.7V LiPo rechargeable battery features a compact design with metal contact pads for positive and negative poles. Ideal for direct soldering to device circuit boards or spring contact connections. Suitable for various DIY electronics projects, small IoT devices, Bluetooth earphones, smart wearables, mini RC vehicles, and portable gadgets. Built-in multi-layer safety protection guards against overcharge, over-discharge, and short circuits. Made with grade A cells. CE, RoHS, and UN38.3 certified for safety compliance. Please verify the polarity (+/-) before soldering.
Connection Note: The battery has metal contact pads (solder pads) for positive (+) and negative (-) poles. No wires or connectors are pre-attached. Solder directly to your device’s PCB or use with spring contacts. Please identify the polarity before installation.
Compatibility Note: Please check your device’s voltage requirements (3.7V) and available space (6x20x30mm) before purchasing. Measure the original battery dimensions and verify polarity.
Battery Care Tips: Avoid full discharge (keep above 20%). Keep away from high temperatures. If swelling occurs, stop use immediately. Do not reverse polarity when soldering.
✅ Condition: Brand New – Never used, premium quality
✅ 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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