The protection circuit for one Li-Ion cell with a voltage of 3.2 V. It has the function of charging, discharging and over-discharge protection. The module can work with a current of up to 12 A

BMS module for six Li-Ion cells with a voltage of 22.2 V. It has the function of charging, discharging and over-discharge protection. The cells can be discharged with a continuous current of up to 14 A

A power supply based on a DC-DC converter with a current capacity of up to 4 A. The input voltage can range from 5 V to 30 V, while the output voltage is adjustable from 0.5 V to 30 V. ZK-4KX

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.7″, but it allows a typical continuous output current of up to 2.5 A. Typical efficiencies of 85% to 95% make this regulator well suited for powering moderate loads like sensors or small motors.

Step-Down converter with adjustable output voltage from 1.25 to 36 V, input voltage from 4 to 38 V and maximum current up to 5 A. Board equipped with a voltmeter with display

The protection system for four Li-Ion cells with a voltage of 14.8 V. The module has the function of charging the cells, discharging and protecting against excessive discharge. The cells can be discharged with a continuous current of up to 18 A

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36V and efficiently reduces it to 5V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.5A and features reverse voltage protection. Pololu 2858

DC voltage converter with adjustable and stabilised output voltage from 0.5 V to 32 V. It can handle loads up to 4 A and has an output of up to 50 W. It features a colour display and a handy user interface. Fnirsi DC/DC converter 50W

 Pololu 2831

The module enables the distribution of the supplied power between the connectors located on the board. It has a built-in power switch to control the system. The maximum voltage on each connector is 24 V.

The trigger module is designed for chargers PD 2.0 and PD 3.0. It is equipped with a USB type C input and a USB type A output. It enables powering devices with 9 V or 12 V and testing chargers. PDC005

Powerbank module with a basket for a 18650 battery. It can provide a current of 3 V and 1 A or 5 V and 2 A

Step Down converter module with an output voltage from 5 to 12 V and a maximum load of 3.4 A. The board is equipped with two USB connectors and has a built-in fast charging function for smartphones

The Step-Down D24V3F5 Buck Voltage Regulator module gives the output voltage of 5V with a wide input voltage range of 7-42V and a maximum output current of 300 mA. Pololu 2098

Power supply based on DC Step Down converter with adjustable output voltage from 0 to 16.5 V and current efficiency of 3 A. The set includes LCD display and transparent case

The compact (0.4″ × 0.5″) D24V5F12 synchronous buck voltage regulator takes an input voltage of up to 36 V and efficiently reduces it to 12 V while allowing for a maximum output current of 500 mA.

DC-DC Step-Down converter module AP63203 with an output voltage of 3.3 V, an input voltage of 3.8 to 32 V and a maximum output current of 2 A. SparkFun COM-18357

A power supply module based on a DC-DC Step-Up converter with a current capacity of up to 5 A. The input voltage can range from 9 V to 45 V, while the output voltage is adjustable from 10 V to 50 V

DC-DC Step-Up converter U3V40F5 with an output voltage of 5 V, an input voltage of 1.3 to 5 V and a maximum output current of 4 A. Pololu 4012

DC-DC Step-Up converter U3V40F12 with an output voltage of 12 V, an input voltage of 1.3 to 12 V and a maximum output current of 4 A. Pololu 4016