Step-Up converter module XL6009 with adjustable output voltage from 1.3 to 35 V, input voltage from 3.8 to 32 V and a maximum output current of 3 A

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

The protection circuit for one Li-Ion cell with a voltage of 3.7 V. It has the function of charging, discharging and over-discharge protection. The cells can be discharged with a continuous current of up to 8 A

The Step-Down D24V3F12 Buck Voltage Regulator module gives the output voltage of 12V with a wide input voltage range of 14.5-42V and a maximum output current of 300 mA. Pololu 2100

Step-Down RT8272 converter with adjustable output voltage in the range from 5 V to 12 V, input voltage from 5 to 24 V and a maximum output current of 3 A

The Step-Down D24V3F9 Buck Voltage Regulator module gives the output voltage of 9V with a wide input voltage range of 11-42V and a maximum output current of 300 mA. Pololu 2099

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

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

Pololu 5V Step-Up Voltage Regulator U3V12F5

The Step-UpU1V11F5 Buck Voltage Regulator module with output voltage 5V, input voltage range of 0.5-5.5V and a maximum output current of 1.2A. Pololu 2562

This small synchronous switching step-down (or buck) regulator takes an input voltage of up to 38 V and efficiently reduces it to 6 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.

Pololu 5V Step-Up Voltage Regulator U3V50F5

Step-Up converter with an output voltage of 2 to 28 V, an input voltage of 2 to 24 V and a maximum current of 2 A

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

Step-Up converter with adjustable output voltage from 5 to 40 V, input voltage from 3 to 35 V and a maximum current of 5 A

Pololu Adjustable 4-12V Step-Up Voltage Regulator U3V50ALV

Step-Down converter with an output voltage of 5 V, input voltage from 4.5 to 40 V and a maximum current of 2 A. The board is equipped with a segment LED display and a USB output

Step-Down converter with an output voltage of 5 V, input voltage from 9 to 36 V and a maximum current of 5 A. The board is equipped with a DC input connector and an output USB connector

Step-Up converter with an output voltage of 12 to 80 V, an input voltage of 8 to 60 V and a maximum current of up to 20 A

This powerful boost regulator efficiently boosts input voltages as low as 2.9 V to a higher, adjustable output voltage between 9 V and 30 V while allowing an input current as high as 5 A.