3 Cell Li-on Battery Holder 3×18650 (wire leads)

Overview

The 3-Cell 18650 Lithium-Ion Battery Holder (Wire Leads, 3S Series) is a robust battery casing engineered to hold three standard 18650 rechargeable Li-ion cells in a series circuit configuration. Outputting a nominal 11.1V DC (and up to 12.6V DC at full charge), this holder provides the ideal voltage source for robotics motor drivers, 12V LED lighting, Arduino VIN power rails, and mobile audio amplifiers. Constructed from durable, impact-resistant ABS plastic with clear polarity markings and pre-attached 15cm flying wire leads, it provides firm battery retention and dependable low-resistance electrical contact.

Key Features

• Series 3S Voltage Delivery: Connects three 3.7V cells in series to provide 11.1V nominal / 12.6V peak, perfect for 12V embedded systems.
• Pre-Attached Color-Coded Leads: 15cm flexible wire leads (Red positive, Black negative) allow immediate connection to switches, terminal blocks, or DC jacks.
• Firm Spring-Retention: Heavy-duty nickel-plated spring terminals clamp batteries firmly, preventing disconnects under robotic vibration.
• Embossed Polarity Guides: Highly visible (+) and (-) markings inside each cell compartment prevent dangerous battery reversal.
• Rugged ABS Enclosure: Durable plastic housing withstands physical impacts, prototyping drops, and moderate mechanical strain.
• Mounting Holes: Features pre-drilled screw holes in the base for secure attachment inside robot chassis and project boxes.

Technical Specifications

• Cell Capacity: 3 × 18650 Lithium-Ion Rechargeable Batteries
• Wiring Mode: In Series (3S)
• Nominal Output Voltage: 11.1V DC
• Peak Fully Charged Voltage: 12.6V DC
• Discharge Cutoff Voltage: ~9.0V DC
• Material: Impact-resistant ABS Polymer
• Contacts: Nickel-plated steel springs
• Dimensions: 77 mm × 61 mm × 21 mm
• Net Weight: ~21 g

Applications & Use Cases

• Mobile Robotics Power: Supplying 12V to L298N and TB6612FNG motor drivers for autonomous wheeled rovers and robot arms.
• Arduino VIN Powering: Providing clean, unregulated 11.1V to the onboard voltage regulator of Arduino Uno, Mega, and Nano.
• 12V LED Strip Installations: Portable field illumination for camping, emergency lighting, and costume lighting.
• DIY Bluetooth Boomboxes: Powering 12V TPA3116D2 and PAM8610 digital audio amplifier boards.
• Field Testing & Prototyping: Providing standalone battery power to test field equipment away from mains wall outlets.

What's Included

• 1 × 3-Cell 18650 Li-ion Battery Holder with pre-soldered wire leads

Compatibility

• Batteries: Fits all standard flat-top and button-top 18650 lithium-ion rechargeable batteries (3.7V nominal).
• Safety Precaution: Ensure all 3 installed batteries have matching capacities and voltage levels to maintain battery balance.

MOKWN Recommendation

Three 18650 cells in series give you the exact 11.1V–12.6V range required by 12V DC motors and Arduino boards. Rather than using weak 9V alkaline batteries that die in 10 minutes when running motors, using rechargeable 18650 cells in this holder gives you hours of uninterrupted runtime. Always match your cell voltages before inserting them into the holder. Available from MOKWN with fast delivery across Egypt!