Safe, reliable, and ready to plug in.
This Samsung 30Q 18650 Battery is pre-assembled with a built-in protection board (BMS) and comes pre-wired with an XH2.54 2-pin connector (red/black leads), ready for your DIY projects. It utilizes a genuine Samsung INR18650-30Q cell, providing a nominal voltage of 3.7V and a capacity of 3000mAh.
Unlike bare cells, the integrated protection board safeguards the battery against overcharge, over-discharge, over-current, and short circuits. Because of this protection board, the maximum continuous working current is limited to 4A (with a peak startup current of up to 8A). This makes it the perfect, safe power source for DIY electronics, small devices, portable sensors, and custom power banks where safety is a priority.
Key Features
Genuine Samsung 30Q Cell: Authentic high-quality cell ensures reliable 3.7V power and 3000mAh capacity.
Built-in Protection Board (BMS): Provides comprehensive safety against overcharge, over-discharge, over-current, and short circuits.
Pre-wired & Plug-and-Play: Comes with a default XH2.54 2-pin connector (red/black leads, 8-15cm length) for easy integration into your projects.
Safe 4A Working Current: Designed for low-to-medium current devices. (Protection board limits continuous output to 4A, peak to 8A).
Compact Pack Size: Shrink-wrapped with the side protection board, measuring approx. 66mm length and 21.5mm diameter.
Parameters
Applications
Recommended For:
DIY Electronics & Microcontrollers: Safe power for Arduino, ESP32, Raspberry Pi, and breadboard projects.
Portable Devices & Sensors: Ideal for low-current devices like portable sensors, IoT nodes, and small wireless modules.
Custom Power Banks: Build your own safe, small-capacity power bank with protection already built-in.
Mini Fans & Small Gadgets: Suitable for devices drawing under 4A.
Not Recommended For:
High-Drain Devices (>4A): Do not use in high-power flashlights, power tools, or devices drawing more than 4A continuously. The protection board will cut off power.
Vaping/Mechanical Mods: Not suitable for high-current vaping devices.
Devices Requiring Bare Cells: If your device's battery tray expects a standard flat-top cell without wires, this pack will not fit.
FAQ
Q1: What is the maximum discharge current of this battery?
A: Because it is equipped with a protection board, the continuous working current is limited to 4A (with a peak of 8A for short startups). It is not designed for high-drain devices.
Q2: Can I change the connector to something else?
A: The default is an XH2.54 2-pin. We can potentially provide other connectors (like JST, PH2.0, or bare wires) upon request. Please contact us before ordering if you need a different connector.
Q3: Does it have a protection board?
A: Yes, it has a built-in side protection board to prevent overcharge, over-discharge, over-current, and short circuits, ensuring safe operation.
Q4: What are the dimensions?
A: Because of the added protection board and heat shrink wrapping, the pack measures approximately 66mm in length and 21.5mm in diameter.
Q5: How should I charge it?
A: You can charge it directly through the XH2.54 connector using a suitable charger, or integrate it into your project's charging circuit. The protection board will automatically cut off charging at 4.2V.