The S9V11F5 switching step-up/step-down regulator efficiently produces 5V from input voltages between 2V and 16V. Pololu 2836

The XTREME 12V 7Ah battery is a durable, maintenance-free AGM power source for motorcycles, UPS units, and critical backup systems

Step-Down DC-DC converter module based on the D24V150F12 chip. Input voltage 14.5 ... 40V, output voltage 12V (max 15A). Pololu 2885

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40V and efficiently reduces it to 5V with an available output current of around 15A. Typical efficiencies of 80% to 95% along with its high current capabilities make this regulator well suited for powering large loads. Pololu 2881

The Akyga induction charger allows you to charge your smartphone wirelessly using induction. QI technology ensures compatibility with most popular smartphones available on the market. It has Super Fast Charge 3.0 technology. Output voltage from 5 V to 12 V, output current up to 2 A. Akyga AK-QI-04

ToolkitRC Q6AC is a versatile modeling charger that supports up to four batteries at a time, compatible with LiPo, LiFe, Li-Ion, NiMH and Pb cell types. It provides up to 400W of power when powered by AC mains and up to 1000W when powered by DC external power, and also offers fast charging via USB-C PD (65W) and USB-A Fast Charge (18W) ports.

PRT-13777

Lanberg power distribution unit (PDU), designed for horizontal installation in 19" server racks, provides smooth and reliable power supplly with a single-phase input and additional protections, such as overload protection and current path shutters, ideal for professional server environments thanks to the redundant cable cross-section. Lanberg PDU-07F-0200-IEC-BK

An adapter that allows you to connect devices from Europe (including Poland) to sockets in Great Britain. It operates with a voltage of up to 250 V and a current of up to 15 A. It has built-in grounding and child protection. Sthor 72442

The Semi Flexible Monocrystalline Solar Panel is a flexible monocrystalline solar panel with a 5V output voltage and a current capacity of 1 x 29 x 15 x 0.135 cm. DFRobot FIT0600

Step-Down DC-DC converter module based on the D36V6F6 chip. Input voltage 6.2..50V, output voltage 6V (max. 600mA). Pololu 3793

Charger module with a basket for a CR123A battery dedicated to micro:Maqueen robots. DFRobot FIT0611

This compact (0.4″ × 0.5″) switching step-down (or buck) voltage regulator takes input voltages up to 50 V and efficiently reduces them to 9 V while allowing for a maximum output current of 600 mA. It has a very low dropout, so it can be used with input voltages that are within a few hundred millivolts of its output.

Shunt regulator with a constant voltage of 13.2V, bypass resistance 1.33 Ohms 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 3770

The shunt regulator has an adjustable 4 ... 18V voltage, a 1.5 Ohm shunt resistance and a total of 32 SMT bypass resistors on both sides of the PCB. Pololu 3778

15V/4A power supply

Panasonic Eneloop PRO R6/AA rechargeable batteries with a minimum capacity of 2500mAh and a voltage of 1.2V. The set contains two pieces sold in blister packaging. Panasonic BK-3HCDE/2BE

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 3.3 V and a maximum output of 2.5 A to 3.5 A. Pololu 4980