Overview 📝
The 3.7V 850mAh Lithium-ion Battery is a high-performance power cell optimized for small-scale robotics and micro-aviation. Its compact “pouch” design makes it ideal for 1S (Single Cell) projects. Because this version comes with bare wire leads (no connector), it is the preferred choice for engineers building custom prototypes, wearable tech, or repairing specialized micro-drones that use proprietary soldering points.
Key Features ✨
DIY Ready: No pre-installed connector allows you to cut the wires to your exact required length and solder directly to your project.
High Capacity: 850mAh offers significantly longer flight times or operating hours compared to standard 300-500mAh micro-cells.
Ultra-Lightweight: Designed to keep your micro-drone’s takeoff weight as low as possible for maximum agility.
Stable Power: Delivers a consistent 3.7V, peaking at 4.2V when fully charged.
Technical Specifications ⚙️
| Feature | Specification |
| Voltage | 3.7V (Nominal) |
| Full Charge Voltage | 4.2V |
| Capacity | 850 mAh |
| Chemistry | Lithium-ion / Li-Po |
| Connector | None (Bare Wires) |
| Protection | Internal PCM (Protection Circuit Module) included |
| Weight | Approx. 15g – 18g |
| Thickness | Approx. 6mm – 8mm |
Popular Use Cases
Micro Drones: Upgrade or repair battery for small RC quadcopters.
Bluetooth Headsets: High-capacity replacement for long-lasting audio.
Wireless Sensors: Powering ESP32-C3 or Arduino Nano IoT nodes.
Wearables: Lightweight enough for smart glasses or fitness trackers.


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