Power Management

SKU: AF-3859 | Brand: Adafruit

A 4×AA battery holder with premium jumper header wires that plug directly into a breadboard. No stripping or soldering required — just insert the header pins into your breadboard rails and start prototyping with porta...

SKU: DF-FIT0539 | Brand: DFRobot

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 electronic...

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...

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: WS-24760 | Brand: Waveshare

A compact uninterruptible power supply (UPS) module that supports simultaneous charging and power output. When external power is connected, it charges the batteries while providing a stable 5V output. If external powe...

SKU: AF-5607 | Brand: Adafruit

A panel-mount DC barrel jack extension cable that lets you add a clean, professional power input to any enclosure — without cutting custom-shaped holes. The round flange means you only need a standard 1″ (25 mm) drill...

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: DF-DFR0528 | Brand: DFRobot

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 peri...

SKU: DF-DFR0571 | Brand: DFRobot

This is a DC-DC buck-mode power module, with input voltage range 8V~28V and fixed output voltage/current 5V/3A. Its work frequency can reach to 0.5MHz. The module has high conversion rate and small size, easy to embed...

SKU: DF-DFR0569 | Brand: DFRobot

This tiny DC-DC buck-boost converter automatically steps voltage up or down to deliver a stable 5 V output from a 3–15 V input. About the size of a coin (17 × 13 mm), it's ideal for embedding in projects where space i...

SKU: AF-1385 | Brand: Adafruit

Your power supply problems just got SOLVED! This little circuit board may look tiny but inside is a high efficiency DC/DC step-down converter which can output up to 3 Amp at 5V without the need of any heat-sink or for...

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: AF-727 | Brand: Adafruit

A slim 3×AAA battery holder with a built-in on/off switch and JST 2-pin connector. The series configuration outputs approximately 3.6–4.5V — a similar range to lithium-ion batteries — making it an ideal non-rechargeab...

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: AF-6106 | Brand: Adafruit

The Adafruit bq25185 with 5V Boost is an all-in-one charging and power supply board that supports USB, DC, and solar charging with an integrated 5V boost converter. It is designed for projects that need a stable 5V su...

SKU: DF-DFR0969 | Brand: DFRobot

A dual-slot 18650 battery holder with built-in charging and regulated power outputs, perfect for powering microcontrollers, sensors, and portable electronics projects. Simply install two 18650 lithium batteries and us...

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: AF-4193 | Brand: Adafruit

A slim 2×AA battery holder with a built-in on/off switch and genuine JST PH connector. Two AA batteries in series provide approximately 3V — ideal for powering low-voltage electronics projects, microcontrollers, and p...

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: AF-6091 | Brand: Adafruit

The Adafruit bq25185 Charger is a versatile LiPo/LiIon/LiFePO4 charging board that supports USB, DC, and solar power input. It is an excellent upgrade from MCP73833 or MCP73831-based chargers, offering multi-chemistry...