DC-DC Step-up converter module based on the U3V70F9 system. Input voltage 2.9-9V, output voltage 9V, maximum current 10A. Two mounting holes. Polol 2894

ToolkitRC M6AC is an advanced balancer charger dedicated to a wide range of lithium, nickel and lead-acid batteries. Charging capacity up to 300 W, support for PWM, PPM and SBUS measurement modes and laboratory power supply functions make it a versatile tool for modelers, electronics engineers and users of multi-cell power systems. Compact form, precise parameter control and wide input voltage range provide flexibility for work in the workshop and in the field.

Step-Up converter U3V70F6 with an output voltage of 6 V, an input voltage from 2.9 to 6 V and a maximum output current of 10 A. Pololu 2892

The S7V8F3 step-up/step-down converter regulates the voltage at 3.3 V, supporting an input voltage range of 2.7 V to 11.8 V, making it ideal for battery-powered applications. With an efficiency of over 90% and protection against short circuits and overheating, it provides reliable and energy-efficient operation in a wide range of conditions. Pololu 2122

Step-Down DC-DC converter module based on the D24V150F9 chip. Input voltage 11 ... 40V, output voltage 9V (max 15A). Pololu 2884

Power module designed to work with LilyPad boards. It is equipped with a switch and a CR2032 battery socket. SparkFun DEV-13883

DC-DC step-down converter module 12V 12A used to convert energy from 15-24V input voltage to stable 12V, providing up to 12A current. Thanks to high conversion efficiency (over 90%) and low ripple (<50mV), it is ideal for powering sensitive devices in applications such as robotics, drones or LED lighting systems. Additionally, built-in overheating and short-circuit protection mechanisms ensure reliable operation even in difficult conditions. DFRobot DFR1208

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.

Solar energy management module dedicated to LiPo 3.7V batteries. It can work with photovoltaic cells with a voltage from 1 to 3 V. The set includes a 2 V 160 mA solar panel. DFRobot DFR0579

The Akyga Basic series power supply is one of the basic power supplies designed for powering desktops. Compliant with ATX 2.31 standard, 500W power. Akyga AK-B1-500

Powerbank with solar charging function. It has a built-in photovoltaic cell, a lithium-polymer battery with a capacity of 5000mAh, two USB outputs and a white diode, acting as a flashlight. The side walls of the powerbank are made of rubber.

Shunt regulator with a constant voltage of 13.2V, bypass resistance 1.5Ohm and a total of 32 SMT bypass resistors on both sides of the PCB with the possibility of adding an external potentiometer to adjust the preset voltage. Pololu 3771

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

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

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

1.5V LR20/R20 zinc-chloride battery. 2 pcs. GP13G

Photovoltaic panel allows conversion of solar radiation into electrical energy. It has 2W power and 6V output voltage, and its construction has dimensions of 136 x 110 mm. The panel is flooded with resin, which protects it against dirt and mechanical damage. Solar Panel 2W

YT-81302 is a universal travel adapter with a built-in charger featuring two USB ports, supporting electrical standards in over 150 countries. It includes retractable plugs with a locking mechanism and short-circuit protection via easily accessible ceramic fuses. The housing is made of durable, flame-retardant plastic, ensuring safety and reliability during use.

Li-Po battery 3.7V / 750mAh, PCM protection, connector 2 pins, cable length 150mm. Akyga LP403450

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