The EH-18650X2/DC is a high-quality battery management solution designed to house and protect two 18650 lithium-ion cells. This holder features an integrated DC power tail, providing a plug-and-play energy source for Arduino projects, portable LED arrays, and DIY electronic assemblies that require a standard 7.4V to 8.4V power input.
Dual-Slot Series Configuration: Holds two 18650 cells in series to provide a higher output voltage suitable for motor drivers and power modules.
Integrated 2.1mm DC Plug: Features a pre-wired 5.5 x 2.1mm male DC barrel jack, making it compatible with most electronics power ports without soldering.
Impact-Resistant ABS Housing: Constructed from durable black ABS plastic to shield batteries from physical damage and maintain structural integrity.
High-Tension Spring Contacts: Equipped with nickel-plated steel springs that ensure a firm, low-resistance connection even during movement or vibration.
Strain-Relief Wiring: The DC output cable is securely anchored to the housing to prevent wire fatigue and accidental disconnection.
Compatible Battery: 2x 18650 Lithium-Ion cells.
Output Connector: 2.1mm x 5.5mm Male DC Plug.
Color: Matte Black.
Robotics & DIY Projects: Provides a steady power source for robot chassis and microcontrollers like the Arduino Uno.
Portable LED Lighting: Powers custom LED strips or high-power portable arrays for field use.
CCTV & Security Backup: Acts as a portable battery bank for testing 12V-ready cameras and monitors.
Wireless Transmitters: Ideal for powering high-range telemetry modules in RC and aerospace hobbies.
Do I need protected or unprotected 18650 cells? While both fit, we recommend using protected cells (which include their own BMS) to prevent over-discharge, as this holder does not contain built-in protection circuitry.
What is the polarity of the DC plug? Standard 2.1mm DC plugs are typically Center-Positive, meaning the inner pin is the positive (+) terminal and the outer sleeve is the negative (-) terminal. Always verify your device's requirements before plugging in.
Can I charge the batteries while they are in the holder? This holder is designed for power output only. Do not attempt to charge the batteries through the DC plug unless you are using a specialized balance charger compatible with 2S Li-ion configurations.
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