All Products

SKU: AF-2089

A snap-in battery holder for Sony NP-F series camcorder batteries, with a pre-attached 2.1 mm DC barrel plug for powering 7 V DC devices. Clip in a compatible Li-Ion battery pack and connect directly to robots, Arduino projects, LED panels, or any device with a standard DC jack — no soldering or ...

SKU: DF-FIT0539

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 du...

SKU: AF-3456

This 5×AA battery holder delivers approximately 7.5V from five AA batteries, terminated with a 2.1mm DC barrel plug (centre positive). It provides the ideal voltage for Arduino boards and other development boards with onboard 5V regulators, which typically need 1–2V of headroom above their output...

SKU: AF-2788

A DC barrel jack adapter cable that converts a 3.5/1.3 mm or 3.8/1.1 mm DC plug to the standard 5.5/2.1 mm DC barrel jack format. Internal spring contacts accommodate outer diameters from 3.5 mm to 3.8 mm, making it versatile across a range of small-barrel DC connectors. Key Features Wide Comp...

SKU: DF-FIT0538 · MPN: FIT0538

This battery holder takes two 18650 lithium cells and connects them internally in series for a standard 7.4 V output. It is a simple way to power electronics projects from common 18650 cells, such as those used in laptop battery packs and power banks.The holder includes a DC 2.1 power jack, makin...

SKU: AF-4287

A push-fit DC barrel jack adapter that converts a 3.5/1.1 mm DC plug to the standard 5.5/2.1 mm DC barrel jack format. Simply push it onto the smaller plug until it clicks into place — no soldering or tools required. Key Features Click-Fit Connection – Push onto the plug until it clicks secure...

SKU: AF-2897

A simple adapter that sits inside a 5.5 / 2.5 mm DC barrel jack, allowing you to use a standard 5.5 / 2.1 mm barrel plug with it. Just insert the adapter into the device's 2.5 mm jack, then plug in your 2.1 mm power supply as normal. Key Features 2.5 mm to 2.1 mm Conversion – Adapts a 2.5 mm I...

SKU: AF-369

If you need to connect a battery pack or wired power supply to a board that has a DC jack - this adapter will come in very handy! There is a 2.1mm DC plug on one end, and a screw terminal block on the other. The terminals are labeled with positive/negative assuming a positive-tip configuration (w...

SKU: DF-FIT0918

A compact 4×AA battery holder with a built-in on/off power switch, DC2.1 barrel jack output, and a protective cover. Ideal for powering Arduino, Raspberry Pi, and other microcontroller projects with a portable 6V supply. The holder accepts four standard AA batteries (1.2V rechargeable or 1.5V al...

SKU: DF-FIT0141

A 6×AA battery holder with a DC 2.1mm power jack that plugs directly into an Arduino's barrel jack input. Creates a 7.2V rechargeable battery pack from NiMH/NiCd cells or a 9V pack from alkaline cells. Features mounting holes for secure installation. Specifications Cell Quantity: 6× AA Output...

SKU: LB-LR0295

A simple 9V battery holder with a DC barrel connector. Provides a convenient way to mount and connect a 9V battery to your electronics projects. Key Features DC Barrel Connector – Standard connector for easy integration Snap-In Battery Mount – Holds a 9V battery securely Also Available 9V...

SKU: AF-3788

A 4×AA battery holder with a built-in on/off switch and a 13cm (5″) power cable terminating in a centre-positive 2.1mm DC barrel jack. Provides convenient portable power with easy switching for development boards and projects that accept a standard DC barrel jack input. Delivers approximately 4....

SKU: LB-LR0296

A 9V battery clip adapter with a standard 5.5 × 2.1 mm centre-positive barrel jack. Use it to power any device that accepts 9V input through an onboard barrel jack connector. Key Features 9V Battery Snap – Standard clip fits all 9V batteries Barrel Jack Output – 5.5 × 2.1 mm centre-positive c...

SKU: AF-3842

A compact battery holder for three AA cells with an integrated power cable and DC barrel jack. The series configuration delivers approximately 3.6–4.5V depending on battery chemistry, making it a convenient power source for 3.3V microcontroller projects and portable electronics. The 200mm power ...

SKU: LB-LR0294

A simple 6-cell AA battery holder with a 125mm (5") cable terminated with a standard 5.5×2.1mm centre-positive barrel jack connector. Creates a 7.2V rechargeable battery pack from NiMH/NiCd cells or a 9V pack from alkaline cells, ready to plug directly into devices with a standard DC barrel jack ...

SKU: AF-368

A simple adapter that converts a 2.1 mm DC barrel jack to screw terminals, making it easy to connect a DC power supply to boards or projects that lack a DC jack. The terminals are labelled with positive and negative polarity, assuming a centre-positive configuration (the most common type). Key F...

SKU: DF-FIT0043

The second version of the 9V to Barrel Jack Adapter, now featuring a hard plastic battery snap for easier connection and disconnection. Plug a 9V battery into one end and connect the other to any device with a 5.5 × 2.1 mm centre-positive barrel jack. Key Features Hard Plastic Snap (V2) – Easi...

SKU: SF-PRT-10512

A snap-in 9V battery holder with a 5.5mm/2.1mm centre-positive barrel jack connector. The battery clicks securely into place, and three mounting holes allow you to attach the holder to an enclosure or chassis. Key Features Snap-In Design – Battery clicks securely into place 5.5mm/2.1mm Barrel...

SKU: AF-5474

A comprehensive set of 30 barrel jack plug adapters that convert a standard 5.5mm / 2.1mm DC jack to a wide variety of other tip sizes. Perfect for powering devices that use non-standard barrel connectors from your existing DC power supplies, USB-C to DC cables, or battery packs. Each adapter pl...

SKU: AF-248

A 6×AA battery holder with a 5.5mm/2.1mm DC barrel plug, ready to power Arduino boards and other electronics with a standard DC jack. Use alkaline AAs for approximately 9V at 3000–4000mAh, or rechargeable NiMH cells for 7.2V at ~2000mAh. The 9V alkaline output is ideal for boards with a 5V volta...