Pololu 2830

A power supply module with an input voltage of 6 to 12 V and a configurable output voltage of 5 V or 3.3 V. It has holes with a 2.54 mm louver. Ideal for use with a contact board. SparkFun PRT-21297

DC-AC converter, also referred to as an inverter. It converts a constant voltage (DC) of 12 V to an alternating voltage (AC) of 220 V, 380 V or 18 V

A power supply based on a DC-DC converter with a current capacity of up to 6.1 A. The input voltage can range from 6 V to 30 V, while the output voltage is adjustable from 0 V to 36 V. Enclosure version. XYL3606S

The S9V11F3S5C3 switching step-up/step-down regulator efficiently produces a fixed 3.3 V (default) or 5 V (selectable) output whether it is higher or lower than the input voltage, which can range from 3 V to 16 V. The regulator also has fixed 3.3 V low-voltage cutoff with hysteresis that can be used to prevent battery over-discharge.

BMS system for three Li-Ion cells with a voltage of 12 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

Protection circuit for four Li-Ion cells with a voltage of 14.8V. The module has the function of charging cells with the option of a balancer, discharging and a function that protects the cells from excessive discharge. The cells can be charged with continuous current up to 10A

DC-DC Step-Down Converter ME3116AM6G with an output voltage of 5 V, input voltage from 6 to 24 V and a maximum output current of 1 A. Dedicated to the M5Stack modules. M5Stack U125

The BMS-3S-60A-INV board is designed for 3S lithium cell packs with a voltage of 12 V and a high current load. It is used in voltage converters and installations requiring reliable battery protection

Step-Down converter D36V28F12 with an output voltage of 12 V, an input voltage from 12.9 to 50 V and a maximum output current of 3.3 A. Pololu 3786

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

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

Power supply module with an input voltage from 4 to 9 V and a configurable output voltage of 3.3 V or 1.8 V. It has holes with a 2.54 mm pitch. Perfect for use with a contact plate. SparkFun PRT-13157

Power supply module with an input voltage from 6 to 12 V and a configurable output voltage of 3.3 V or 5 V. It has holes with a 2.54 mm pitch. Perfect for use with a breadboard. SparkFun PRT-13032

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

Shunt regulator with a constant voltage of 33V, bypass resistance 4Ohm and a total of 12 SMT shunt resistors on both sides of the PCB with the possibility of adding an external potentiometer to adjust the preset voltage. Pololu 3776

The EMI EN2090-16-F anti-interference network filter, designed to effectively protect electrical devices against electromagnetic interference, supports current up to 16 A and offers effective filtration, with 6.3 mm diameter connectors for quick connection to a variety of equipment. Akyga EN2090-16-F

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 9 V and a maximum output of 2.5 A to 3.5 A. Pololu 4983

The shunt regulator with a constant voltage of 26.4V, bypass resistance 4Ohm and a total of 12 SMT shunt resistors on both sides of the PCB with the possibility of adding an external potentiometer to adjust the preset voltage. Pololu 3774

This small synchronous switching step-down (or buck) regulator takes an input voltage from 4 V to 36 V and efficiently reduces it to 3.3 V. The board measures only 0.7″ × 0.7″ yet delivers a typical continuous output current of up to 2.6 A and features reverse voltage protection.