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412025 180mAh 3.7V Li-ion Polymer battery with 3Pin connector showing positive, negative, and NTC thermistor pins, front view on white background
412025 180mAh 3.7V battery with 3Pin connector, back view showing model number 412025, capacity 180mAh, and voltage 3.7V on spec label

412025 180mAh 3.7V Battery with 3Pin Connector for DIY Electronics

Original price was: $15.99.Current price is: $9.99.

🔘 412025 180mAh 3.7V | 🔋 Li-ion Polymer | 🔌 3Pin Connector for DIY Electronics

8 in stock

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SKU: 412025 Category: Tags: , , , , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

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Warranty Period90 days from delivery15-30 days from order confirmation
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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.

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Description

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

✅ 180mAh High Capacity – Compact power for small devices

✅ 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

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

Battery model: 412025
Capacity: 180mAh / 0.666Wh
Rated voltage: 3.7V
Charge limit voltage: 4.2V
Battery type: Li-ion Polymer (Grade A cells)
Connection type: 3Pin connector (positive, negative, and thermistor / NTC)
Dimensions: 4.1mm (Thickness) × 20mm (Width) × 25mm (Length)
Compatible with: General purpose — please verify dimensions, voltage, and connector type for your device
Package include: 1 x battery
Power your compact DIY electronics projects with this 412025 180mAh Li-ion Polymer battery. The 412025 format (4.1mm thick × 20mm wide × 25mm long) is a small, rectangular lithium-polymer cell commonly used in portable and wearable devices. This battery features a 3Pin connector — the three pins typically include positive (+), negative (-), and a thermistor (NTC) connection for temperature monitoring during charging. The 180mAh capacity provides reliable power for low-drain applications. Built with grade A cells and multi-layer safety protection against overcharge, over-discharge, and short circuits. CE, RoHS, and UN38.3 certified for safety.
Why Choose This 412025 Battery — And Where to Use It: This 3.7V battery is designed for small electronics that require a compact power source. Typical applications include: Bluetooth earphones and headphones, smart watches and fitness trackers, small wireless sensors, portable medical devices, mini RC vehicles, electronic toys, and custom DIY projects. The 3Pin connector includes an NTC thermistor pin, which is used by many devices to monitor battery temperature during charging — a critical safety feature for lithium-ion cells. If your original battery uses a 3Pin connector with similar dimensions and voltage, this is likely a compatible replacement. The battery is lightweight (under 5g) and fits into tight spaces. Always verify the pinout configuration before connecting — the three wires are typically color-coded: red (positive), black (negative), and yellow or white (NTC/thermistor). However, pin assignments can vary between manufacturers, so confirm polarity before installation. The battery also supports standard 4.2V charging, which is common for single-cell Li-ion applications.
Compatibility Note: This is a general-purpose battery, not a direct replacement for a specific commercial device. Before purchasing, verify your device’s voltage requirement (3.7V nominal, 4.2V max charge), available physical space (must accommodate 4.1×20×25mm), and connection type (3Pin connector with NTC). This battery is not compatible with devices requiring a different battery chemistry, higher voltage, or different dimensions. If your original battery has a different connector (2Pin, JST, or wires without connector), this battery may not be suitable. Always measure your original battery’s dimensions and check the connector type before ordering.

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Frequently Asked Questions

The 412025 180mAh 3.7V battery is a general-purpose Li-ion Polymer cell designed for compact electronics. For 412025 battery compatible devices, typical applications include Bluetooth earphones, smart watches, fitness trackers, wireless sensors, portable medical devices, mini RC vehicles, and electronic toys. The 412025 battery 3.7V 180mAh with 3Pin connector is commonly used in devices that require battery temperature monitoring via NTC thermistor. For 3Pin connector battery for small electronics, this battery provides reliable power. However, before purchasing a 412025 replacement battery for your device, you must verify: 1) Your device uses a 3.7V nominal voltage (4.2V max charge). 2) The physical dimensions fit (4.1mm × 20mm × 25mm). 3) Your device uses a 3Pin connector with NTC thermistor (not 2Pin or wires only). This battery is NOT compatible with devices requiring higher voltage, different battery chemistry, or different connector types. Always check your original battery specifications before ordering.

The 412025 180mAh battery has a capacity of 180mAh (0.666Wh) and a nominal voltage of 3.7V, with a maximum charge voltage of 4.2V. The 412025 3.7V 180mAh Li-ion Polymer battery dimensions are 4.1mm thick × 20mm wide × 25mm long — a compact format for small devices. For 412025 battery 3Pin connector pinout, the three pins typically include: positive (+), negative (-), and NTC thermistor for temperature monitoring. The thermistor pin is used by the charging circuit to prevent overheating during charging — a critical safety feature. For 412025 battery capacity 180mAh, this provides sufficient power for low-drain applications. The battery features built-in protection against overcharge, over-discharge, and short circuits. It is CE, RoHS, and UN38.3 certified. For 3.7V 180mAh battery for Bluetooth earphones, this size is commonly used in TWS earbuds and similar devices. The battery supports standard 4.2V Li-ion charging (typically 0.5C or 0.9A max). Always verify polarity before connecting — incorrect polarity will damage both the battery and your device.

Installing the 412025 battery with 3Pin connector requires careful handling. For 412025 battery installation guide: 1) Power off your device completely. 2) Identify the positive (+), negative (-), and NTC thermistor pins on both the battery and your device's connector — they are usually color-coded: red (positive), black (negative), yellow/white (NTC). However, pin assignments vary by manufacturer, so confirm with a multimeter if unsure. 3) Connect the 3Pin connector — it is keyed, but always verify orientation. 4) Secure the battery in the compartment with appropriate adhesive tape. For 3Pin connector battery replacement tips, never force the connector — if it doesn't fit easily, check alignment. For 412025 battery care practices: 1) Use only a compatible 4.2V Li-ion charger. 2) Avoid over-discharging below 3.0V — the battery has built-in protection, but continuous deep discharge reduces lifespan. 3) Keep battery level between 20% and 80% for daily use. 4) Avoid exposing the battery to high temperatures (above 40°C / 104°F). 5) For long-term storage (over 2 months), keep the battery at approximately 60% charge. 6) If the battery shows any swelling, stop using immediately and dispose properly. For 412025 battery care tips, remember that smaller Li-ion cells are more sensitive to over-discharge than larger batteries — avoid draining completely if possible.

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