Power Management

SKU: SF-PRT-09547 | Brand: SparkFun

A 2×AA battery holder with a sliding cover secured by a Phillips head screw and a built-in ON/OFF switch for convenient power control. The 150mm tinned leads make it easy to solder into your projects. Key Features ...

SKU: DF-DFR0457 | Brand: DFRobot

In most Arduino projects, relays are the first choice to drive some large current device. It requires a certain amount of current to drive the internal coil to pick-up contact. But for some MCU, like Intel Edison,...

SKU: DF-FIT0080 | Brand: DFRobot

A 4-cell AA battery holder in a square (2×2) configuration with a sliding removable cover and a built-in ON/OFF switch. Features 5-inch tinned leads for easy soldering. The cover keeps batteries secure, and the switch...

SKU: LB-LS5508 | Brand: Little Bird

A 2×AA battery holder with a protective cover, built-in on/off switch, and large alligator clip leads. The alligator clips make it easy to connect to circuits, components, and conductive materials without soldering — ...

SKU: TB-SB2300 | Brand: Little Bird

A 14500-size rechargeable lithium-ion battery with 800mAh capacity and 3.7V nominal voltage. The 14500 form factor is the same size as a standard AA battery, making it a common choice for LED torches and other compact...

SKU: DF-DFR0668 | Brand: DFRobot

This is a Type-C  Lipo charger designed for single-cell 3.7V lithium battery. The compact size makes it easy to integrate into your applications. The charger adopts TP4056X lithium battery charging IC, which guar...

SKU: DF-FIT0110 | Brand: DFRobot

This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm, center-positive male barrel jack. If you need to connect bare wires to a barrel ...

SKU: LB-AAA-BATTERY | Brand: Little Bird

A small, but mighty power supply. This board was designed to be as small and inconspicuous as possible. Pop in a AAA battery, flip the power switch, and you will have a 5V supply to power your E-Textile circuit. ...

SKU: LB-IBIS | Brand: Little Bird

Micro:bit Power Supply Module 3.3V 2A is a kind of power module for micro:bit. The output voltage of 3.3v can be connected directly to the battery connector of the micro:bit, providing strong and steady power suppl...

SKU: DF-FIT0266 | Brand: DFRobot

A 6×AA battery holder with bare wire leads for creating 7.2V rechargeable battery packs (NiMH/NiCd) or 9V packs from alkaline cells. The holder features side-by-side cell placement and comes with 150mm red and black w...

SKU: AF-830 | Brand: Adafruit

A 4×AA battery holder with a snap-on cover and built-in on/off switch. Holds four AA batteries in series, outputting a nominal 6V (alkaline) or 4.8V (NiMH), making it a convenient portable power source for 5V microcon...

SKU: LB-BATTERYAA | Brand: Little Bird

A 2× AA battery holder with on/off switch, designed for powering the BBC micro:bit on the go. The JST connector plugs directly into the micro:bit's battery port, and the ~14 cm cable provides enough length for flexibl...

SKU: AF-368 | Brand: Adafruit

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 p...

SKU: RP-SC1677 | Brand: Raspberry Pi Ltd

Many of our favourite Raspberry Pi applications, from garden webcams to industrial controllers, involve putting our products in out-of-the-way locations, where they act as a bridge between the network and the physical...

SKU: DF-FIT0151 | Brand: DFRobot

A screw-terminal adapter that converts a 5.5 × 2.1 mm centre-positive DC barrel jack connection to bare wire terminals. Plug in a barrel jack power supply on one end and connect the screw terminals to a breadboard, ci...

SKU: SF-PRT-10811 | Brand: SparkFun

This DC power jack/connector is just like the other one that we carry except that it’s terminated with breadboard-friendly pins instead of wide solder terminals. These are also compatible with our DC wall supplies and...

SKU: SF-PRT-10288 | Brand: SparkFun

This adapter allows you to connect a barrel jack connector to bare wires. One end has screw terminals and the other has a 5.5x2.1mm, center-positive female barrel jack. If you have a power supply with a barrel jack an...

SKU: DF-DFR0884 | Brand: DFRobot

This dual-USB step-down buck converter accepts 8–32V DC input and delivers a regulated 5V output at up to 3A across two USB Type-A ports simultaneously. With over 85% conversion efficiency and built-in reverse-connect...

SKU: TB-XC4502 | Brand: Little Bird

This compact TP4056-based module charges a single lithium cell from a 5V USB supply. With charge state LEDs and both mini-USB and solder tab inputs, it's an easy way to add rechargeable battery capability to your proj...

SKU: AF-369 | Brand: Adafruit

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 termi...