The compact (0.4″ × 0.5″) D24V5F2 synchronous buck voltage regulator takes input voltages between 3 V and 36 V and efficiently reduces them to 2.5 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 80% and 90%. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

Step-Up converter U3V70F15 with an output voltage of 15 V, an input voltage from 2.9 to 15 V and a maximum output current of 10 A. Pololu 2896

Step-Up converter U3V70A with an output voltage from 4.5 to 20 V, an input voltage from 2.9 to VOUT and a maximum output current of 10 A. Pololu 2890

The compact (0.4″ × 0.5″) D24V5F9 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 9 V while allowing for a maximum output current of 500 mA. Pololu 2845

Transmitter and receiver set enabling wireless power supply for 12V devices. Maximum charging current up to 1A.

DC-DC Step-Up converter module with adjustable output voltage of 5 V, 8 V, 9 V or 12 V. The module can be powered with the voltage from 2.5 to 12 V, making it compatible, for example, with Lithium batteries with a nominal voltage of 3 , 7 V.

GP 11A alkaline battery with a voltage of 6V. GP 11A

CR123A lithium battery with 3V voltage and 1400mAh capacity. GP CR123A

CR2025 lithium battery with 3V voltage and 150mAh capacity. Kinetic CR2025

CR2016 lithium battery with 3V voltage and 90mAh capacity. Maxell CR2016

The XTAR VC2 charger is a two-channel charger for lithium-ion (Li-ion) cells with a micro USB charging input. Each channel is independent. The VC2 has a large LCD screen showing charging voltage and current. The charger also shows the capacity that is delivered to the cell and displays the result on the screen

The active PoE 5V / 2.4A Type-C splitter allows you to supply devices with 5 V (USB Type-C) voltage using energy transmitted via an Ethernet network using Power Over Ethernet (PoE) technology. The adapter also allows network connectivity at 10 / 100Mbit.

Multifunctional power supply with adjustable output voltage from 3V to 12V and 30W power. It has a USB output and a DC plug with 6 interchangeable tips.

Transmitter and receiver set enabling wireless power supply for 12V devices. Maximum charging current up to 2A.

The Adafruit Micro-Lipo charger is designed to charge lithium-polymer or lithium-ion (LiPoly / LiIon) batteries via a USB Type-C connector. It performs charging in 3 stages: pre-charging, fast charging with constant current and maintenance charging with constant voltage.

Step-Down DC-DC converter module based on the D36V6F3 system. Input voltage 4 ... 50V, output voltage 3.3V (max. 600mA). Polol 3791

Safety system for two Li-Ion cells with 7.4V. The module has the function of charging cells with the balancer, discharging and the function of protecting the cells against discharge. Cells can be charged with continuous current up to 5A. modBMS5A

Safety system for two Li-Ion cells with 11.1V. The module has the function of charging cells with the balancer, discharging and the function of protecting the cells against discharge. Cells can be charged with continuous current up to 20A and discharged with current 40A. modBMS40A

Step-down converter with adjustable output voltage 1.2V-35V and current efficiency 9A. The module allows to limit the current consumption at the output via a multi-turn potentiometer. modxl4016sd

Li-Po battery 3.7V / 700mAh, PCM protection, connector, 2 pins, cable length 150mm. Akyga LP503442