All Products

SKU: LB-LR0309-16

A flat 4×AA battery holder with a 2.1mm DC barrel jack connector, providing an easy way to power Arduino boards and other projects that accept a DC barrel plug. With four alkaline AA batteries installed, it delivers approximately 6V — within the recommended input voltage range for the Arduino Uno...

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-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: DF-DFR1202 · MPN: DFR1202

A high-efficiency DC-DC step-down (buck) converter that accepts 6–24 V input and delivers a stable 5 V output at up to 16 A. With over 90% conversion efficiency at typical loads and output ripple below 20 mV, it provides clean, reliable power for demanding applications. The module includes over-...

SKU: AF-80

A high-quality 9V battery clip with a pre-assembled 5.5mm/2.1mm centre-positive barrel connector. The moulded plastic clip covers the battery terminals to prevent short circuits, and the barrel plug connects directly to Arduino boards and other devices with a standard DC barrel jack. Key Feature...

SKU: AF-449

This 8×AA battery holder provides a portable 12V power source by connecting 8 AA batteries end-to-end in series. It delivers approximately 12VDC with alkaline cells (9.6V with NiMH rechargeables) and supports up to 2A peak current draw. The holder securely retains the batteries even when bumped ...

SKU: DF-DFR0528

DFRobot UPS HAT is an uninterruptable power supply shield designed for the Raspberry Pi Zero series, and also compatible with Pi 2/3/A+. The UPS HAT can continue to provide power to the Raspberry Pi for a certain period of time when the system is powered off, by which to avoid system damage and a...

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: DF-EDU0170

The Gravity Science Data Acquisition Module Kit is a comprehensive toolkit for conducting digital scientific experiments without programming or electronics knowledge. Built around the DFRobot SCI DAQ module, it includes four sensors covering soil moisture, ambient light, temperature/humidity, and...

SKU: DF-FIT0611

This is a Li-ion Battery Holder specially designed for micro: bit educational robot Maqueen. It can be used to hold a CR123A 3.6V lithium rechargeable battery to provide more than 8 hours continuous power for Maqueen. Using this environment-friendly product, you can save about 200 batteries in on...

SKU: LB-LR0309-18

A single-cell 18650 battery holder with bare wire leads, designed for easy integration of 18650 lithium-ion cells into your electronics projects. Simply drop in a battery and connect the leads — no soldering or connectors required. Key Features Single 18650 Cell – Holds one standard 18650 batt...

SKU: DF-DFR1236 · MPN: DFR1236

This development kit combines the FireBeetle 2 ESP32-C5 microcontroller board with a dedicated solderless IO expansion shield, giving you a practical platform for smart home and IoT prototypes.The ESP32-C5 brings dual-band Wi-Fi 6 on 2.4 GHz and 5 GHz, plus Bluetooth 5, Thread and Zigbee support....

SKU: DF-FIT0131

A simple 9V battery clip cable with a 5.5 × 2.1 mm centre-positive barrel jack. Plug a 9V battery into one end and connect the other to any device with an onboard barrel jack — ideal for powering Arduinos, development boards, and evaluation boards from battery. Key Features 9V Battery Snap – S...

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: AF-3287

A compact 3×AA battery holder with a built-in on/off switch, JST 2-pin connector, and an ergonomic belt clip. The series configuration outputs approximately 3.6–4.5V — a similar range to lithium-ion batteries — making it an ideal non-rechargeable alternative for 3.3V projects that use a JST batte...

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-3546

A passive adapter with a 1st-generation MagSafe plug on one end and a 5.5 mm / 2.1 mm DC barrel jack (centre-positive) on the other. It lets you connect a 15–20 VDC barrel-jack power supply to devices that use the original MagSafe connector — useful for bench testing, custom power setups, or repl...

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: DF-FIT0111

A classic 9V battery snap connector with bare wire leads, 15 cm in length. Pair it with a DC Barrel Jack Adapter – Male to power an Arduino directly from a 9V battery. Key Features Bare Wire Leads – Solder or connect directly to your project Cable Length – 15 cm Standard 9V Snap – Fits all s...

SKU: AF-2697

This USB to 2.1 mm barrel jack cable lets you power 5 V DC devices from any USB port. Simply connect the USB-A end to a computer, USB wall adapter, or USB battery pack, and the barrel jack end to your device. At 1 metre long with 22 AWG wires, it handles higher current draws reliably. The barrel...