The 18650x2 7.4V 3000mAh Battery Pack is a high-density power solution constructed from two premium 18650 cells wired in series. This configuration provides a stable 7.4V nominal output (peaking at 8.4V when fully charged), making it an ideal replacement or upgrade for a wide variety of high-drain electronic devices.
Equipped with a pre-installed 2-pin JST-style connector, this battery pack is designed for easy "plug-and-play" installation. Its compact, blue-wrapped form factor is engineered for durability and efficient heat dissipation during high-performance tasks.
High Energy Density: The 3000mAh capacity provides reliable, long-lasting power for demanding applications, reducing the need for frequent recharges.
Integrated Connector: Features a high-quality 2-pin connector on flexible color-coded leads (Red for Positive, Black for Negative) for secure and simple connection.
Stable 7.4V Output: Optimized for devices requiring a 7V-8V power range, ensuring peak performance for motors, sensors, and logic boards.
Protective External Wrap: The heat-shrink blue insulation protects internal cells from minor impacts, moisture, and short circuits.
Reliable Chemistry: Advanced Lithium-ion technology supports hundreds of recharge cycles while maintaining a low self-discharge rate.
Configuration: 18650x2
Nominal Voltage: 7.4V.
Charging Voltage (Max): 8.4V.
Capacity: 3000mAh.
Connector Type: 2-Pin (JST-XH or similar).
Chemistry: Lithium-ion (Li-ion).
RC Vehicles: Powering remote-controlled cars, trucks, boats, and small drones.
Robotics & DIY: Ideal for Arduino or Raspberry Pi projects involving servo motors and actuators.
Portable Electronics: Replacement battery for portable speakers, handheld game consoles, and medical devices.
Security & Lighting: Backup power for smart locks, wireless alarms, and high-intensity portable floodlights.
Can I charge this with a standard 5V USB cable? No. You must use a dedicated 7.4V / 8.4V Li-ion balanced charger. A standard 5V USB port does not provide enough voltage to charge this 2-cell series pack.
Is it safe to leave the battery plugged into my device? It is recommended to disconnect the battery if the device will not be used for an extended period. While many packs have internal protection, parasitic drain from the device can eventually over-discharge the cells.
What should I do if the connector doesn't match my device? The 2-pin connector is a standard size, but always verify polarity (Red/Black) before plugging it in. If your device uses a different plug, you may need a compatible adapter or a simple lead modification.
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