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

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

Step-Up/Step-Down converter with an output voltage of 5 V, an input voltage from 3 to 15 V and a maximum current of up to 600 mA

Waterproof DC-DC Step-Down Converter with 8 to 22V input voltage and 5V 3A USB output

Modular power supply with a power of 3 W, input voltage from 100 to 240 V and output voltage of 3.3 V. Designed for mounting on a PCB. Hi-Link HLK-PM03

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

Step-Down converter with an output voltage of 5 V, an input voltage of 6.5 to 16 V and a maximum current of 4 A

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

Modular power supply with a power of 3 W, input voltage from 100 to 240 V and output voltage of 5 V. Designed for mounting on a PCB. Hi-Link HLK-PM01

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 12 V and a maximum output of 2.5 A to 3.5 A. Pololu 4985

The LM7805 5V 1.2A linear stabilizer module is a reliable and easy-to-use voltage stabilization solution for all electronics projects. Thanks to its solid construction, built-in protections and high efficiency, this module provides a safe and constant 5V power supply, being an invaluable component in the work of every electronics engineer

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

BMS system for four Li-Ion cells with a voltage of 16,8 V. It has the function of charging with balancer, discharging and over-discharge protection. The cells can be charged with continuous current up to 60 A and discharged with current up to 80 A

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.

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.

BMS system for five Li-Ion cells with a voltage of 21 V. It has the function of charging with balancer, discharging and over-discharge protection. The cells can be charged with continuous current up to 60 A and discharged with current up to 80 A

The very small step-down 6 V, 2.5 A synchronous inverter can be supplied with voltage up to 36 V, dimensions: 17.8 mm x 17.8 mm. Pololu 2859

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 36 V and efficiently reduces it to 7.5 V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.4 A and features reverse voltage protection.

Step-Down converter D36V50F9 with an output voltage of 9 V, an input voltage from 9.9 to 50 V and a maximum output current of 7 A. Pololu 4094