2 x 18650 Battery Holder with DC2.1 Power Jack

The 2 x 18650 Battery Holder with DC2.1 Power Jack provides a dependable 7.4V power source for portable electronics and robotics projects. Wired internally in series, it holds two standard 18650 lithium cells and connects directly to compatible microcontrollers. It is an ideal portable power solution for students, makers, and hobbyists.

Standard 7.4V DC barrel output

The internal series wiring delivers a standard 7.4V nominal output through a 2.1mm DC plug (5.5mm outer diameter, 2.1mm inner diameter). This connector lets you plug power directly into compatible boards such as an Arduino without soldering.

Durable ABS and nickel-plated contacts

Constructed with a sturdy ABS plastic shell, the holder is built for repeated use in prototypes. The contacts feature nickel-plated stainless steel spring plates to maintain firm mechanical retention and reliable electrical contact.

Standard 18650 cell compatibility

The dual-slot enclosure fits two standard 18650 lithium batteries measuring 18mm in diameter by 65mm in length. Note that minor visual variations in the DC plug moulding may occur between batches without impacting performance.

Compact and lightweight design

Weighing only 15.5g and measuring 77.9 x 40.11 x 21.41mm, this holder fits neatly into compact chassis and custom enclosures. It is also RoHS certified for environmental compliance.