3 x 18650 Battery Holder with DC2.1 Power Jack

A robust battery holder designed to house three 18650 lithium-ion cells in series, delivering a nominal 11.1V output through a standard DC 2.1mm power jack. Ideal for powering projects, robots, and portable electronics that require higher voltage from rechargeable cells.

The holder features a durable ABS shell with nickel-plated stainless steel spring contacts for reliable electrical connections. The integrated DC barrel jack (5.5mm outer / 2.1mm inner) makes it easy to plug into compatible development boards and devices.

Key Features

• 3× 18650 Series Configuration – Provides nominal 11.1V output (3.7V per cell)
• DC 2.1mm Power Jack – Standard 5.5mm outer / 2.1mm inner barrel connector for broad compatibility
• Durable ABS Construction – Lightweight yet sturdy enclosure
• Nickel-Plated Spring Contacts – Stainless steel springs ensure reliable, low-resistance connections
• RoHS Compliant – Meets environmental safety standards

Specifications

• Battery Type – 3× 18650 (not included)
• Output Voltage – 11.1V nominal (series configuration)
• Connector – DC barrel jack, 5.5mm outer / 2.1mm inner
• Material – ABS shell, nickel-plated stainless steel springs
• Dimensions – 78.24 × 59.46 × 21.41mm
• Weight – 30g (without batteries)

Ideal For

• Robotics and portable electronics projects
• Powering Arduino, Raspberry Pi, and other development boards via DC jack
• Field-deployable sensor systems and data loggers
• Any application requiring a rechargeable 11.1V power source

Package Contents

• 1× 3-Cell 18650 Battery Holder with DC 2.1mm Jack