Power Management

SKU: PH-106133 | Brand: PiHut

The Power Bank KeepAlive (USB-C) prevents power banks from automatically shutting off when connected to low-power devices. It uses a 555 timer circuit to pulse a small amount of current through the USB-C port, keeping...

SKU: LB-1147 | Brand: Little Bird

An enclosed battery holder for three AAA cells with a built-in on/off switch. The snap-on lid keeps batteries secure during use, and the integrated switch lets you toggle power without disconnecting leads. Provides a...

SKU: EF-EF10095 | Brand: ElecFreaks

A 2×AA battery holder designed specifically for the BBC micro:bit. The built-in JST PH connector plugs directly into the micro:bit's battery socket, and the integrated on/off switch with a secure cover provides safe, ...

SKU: PI-COM1305 | Brand: Pimoroni

A compact 2×AAA battery holder with a built-in power switch and JST connector, compatible with micro:bit and other boards that accept JST battery inputs. This is the same battery holder included in our micro:bit acces...

SKU: PL-2858 | Brand: Pololu

The D24V22Fx family of step-down voltage regulators generates lower output voltages from input voltages as high as 36 V. They are synchronous switching regulators (also called switched-mode power supplies (SMPS) or DC...

SKU: SF-PRT-12083 | Brand: SparkFun

This 4xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small phillips head screw. Another bonus is the ON/OFF swi...

SKU: LB-LS4126 | Brand: Little Bird

A 4-slot smart charger for 18650 and other cylindrical Li-ion rechargeable batteries. Each slot operates independently, so you can charge batteries of different sizes and charge levels simultaneously. USB powered for ...

SKU: LB-LS5548 | Brand: Little Bird

Introducing our Compact DC-DC Voltage Converter Module, a powerful and efficient solution for boosting your power supply needs. This tiny powerhouse is designed to elevate a low 1-5V input to a stable 5V output, perfe...

SKU: DF-FIT0610 | Brand: DFRobot

This enclosed battery holder takes 3× AA batteries in series, providing approximately 4.5V from alkaline cells or 3.6V from NiMH/NiCd rechargeables. It features a built-in on/off switch and a sliding, removable cover ...

SKU: DF-DFR1202 | Brand: DFRobot

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 provi...

SKU: DF-KIT0197 | Brand: DFRobot

Harnessing the abundant sources of energy in the natural environment, such as mechanical, thermal, solar, and radio frequency energy, can provide a continuous flow of power to devices. The DFM8001 Ambient Energy Harve...

SKU: DF-FIT0844 | Brand: DFRobot

This PTC (Positive Temperature Coefficient) Heating Element is a self-regulating thermostatic ceramic heater that automatically maintains a constant surface temperature without external temperature controllers or sens...

SKU: AF-4920 | Brand: Adafruit

This little buck converter based on the TPS62827 is super handy, taking up to 5.5V input and providing a 3.3V output with up to 2A current. It's great for supplying power to hungry 3.3V voltage circuits from a range o...

SKU: AF-4226 | Brand: Adafruit

The Adafruit INA260 is a precision DC power sensor that measures current, voltage, and power on either the high or low side of your circuit. With an integrated 2 mΩ (0.002Ω) 0.1% shunt resistor and 16-bit ADC, it hand...

SKU: LB-LR0309-16 | Brand: Little Bird

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 a...

SKU: DF-FIT0079 | Brand: DFRobot

A simple 4-cell AA battery holder in a square (2×2) configuration. Features 5-inch tinned leads for easy soldering into your project. Provides 6V nominal output with four AA alkaline batteries, or 4.8V with rechargeab...

SKU: AF-1863 | Brand: Adafruit

This switched JST connector is the best way to quickly prototype with our LiPoly batteries. We paired a genuine JST connector with a slide switch that can do up to 600mA. Both are soldered onto a breadboard-friendl...

SKU: DF-FIT0043 | Brand: DFRobot

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...

SKU: AF-184 | Brand: Adafruit

Build your own breadboard-friendly adjustable power supply with this soldering kit. Based on the MIC2941 low-dropout regulator, it provides a guaranteed 1.25A output with only 40–400 mV dropout — far better than the L...

SKU: SF-PRT-10891 | Brand: SparkFun

This 3xAA battery holder puts a nice finishing touch on your battery powered project. This holder features a removable, sliding cover, which is secured with a small phillips head screw. Another bonus is the ON/OFF swi...