The REBEL RB-168D battery tester is a compact device for precise diagnostics of the charge level of the most commonly used battery types. Its digital voltage readout, lack of need for an external power source, and compatibility with both cylindrical and button cell batteries make it a practical tool for everyday use in both home and professional environments.

The Akyga CR2032 lithium battery (3V, 240 mAh) provides long-lasting power for electronic devices. Utilizing Li-MnO₂ technology, it ensures stable voltage and a low self-discharge rate.

The BLOW SUPER ALKALINE 9V 6LR61 battery is an efficient and durable power source, ideal for smoke detectors, microphones, remotes, and other electronic devices. Thanks to alkaline technology, it provides stable voltage and long lifespan. The blister packaging protects the battery from damage and makes storage easier.

The AG3 alkaline battery (also known as L736 or LR41) with a 1.5V voltage is a small power source, ideal for devices such as watches, calculators, and small toys. Its compact dimensions (approximately 7.9 mm in diameter and 3.6 mm in height) make it suitable for use in devices that require small batteries. The blister packaging typically contains several pieces, providing convenience and a longer-lasting supply.

Step-Up DC-DC converter module. It has an input voltage of 1.3 to 16 V, an output voltage of 15 V and a maximum input of up to 2 A. Pololu 4946

Step-Up/Step-Down converter module based on the S13V20F5 system. It has an input voltage from 2.8 to 22 V and an output voltage of 5 V. The current efficiency of the converter is up to 2,5 A. Pololu 4085

DC-DC Step-Up/Step-Down Converter Module. It has an input voltage of 1.4 to 16 V, an output voltage of 3.3 V and a maximum output current of 1 A to 1.5 A. Pololu 4964

The Maxell CR2025 lithium battery with a voltage of 3V and a capacity of 170 mAh is a reliable power source for devices such as sensors, calipers, and car remotes. With a diameter of 20 mm and a thickness of 2.5 mm, it fits perfectly into compact electronic devices.

Sthor brand extension cord with grounded sockets, child protection, power cut-off switch, solid three-core 1.5 mm² cable with a PVC sheath, and a high-quality plastic housing with mounting holes, suitable for home and office use, easily powering demanding receivers, with a maximum load of 3500 W, three sockets and a length of 1.5 m. Sthor-72350

Panasonic AAA 1.5V LR3 Alkaline Battery is a reliable power source, perfect for everyday devices such as remote controls, toys, and flashlights. With high-quality construction, it ensures long-lasting and stable performance for various electronic devices.

Universal charger designed for 1-4S LiPo, LiHv and LiFe batteries. It has a compact size and a built-in 1.54" LCD IPS display. ToolkitRC M4

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

Efficient step-down converter that reduces the input voltage from up to 45 V to a regulated output voltage range from 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.4 A. It has built-in protection against reverse polarity, overload and short circuit, and the spread spectrum function reduces EMI interference. The module is equipped with an additional potentiometer for adjusting the cut-off voltage. Pololu 4872

The JST‑XH 2–6 S balance adapter allows flexible use of LiPo, LiHV, and LiFe battery packs in compatible systems. Compact and durable design ensures reliable operation in charging stations and RC projects.

Efficient step-down converter that reduces the input voltage from up to 45 V to a regulated output voltage range from 1.4 to 7 V, offering high efficiency and a maximum continuous current of 3.8 A. It has built-in protection against reverse polarity, overload and short circuit, and the spread spectrum function reduces EMI interference. The module is equipped with an additional potentiometer for adjusting the cut-off voltage. Pololu 4852

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

Akyga® AK-PD-21 is a reliable power source for a wide range of Tefal and Rowenta cordless vacuum cleaners. It ensures fast and safe charging, providing convenience for users both at home and in professional environments.

This 802.3af/at PoE splitter delivers 5V/2.4A over micro USB while simultaneously transmitting Ethernet data. It allows you to power SBCs, IP cameras, and IoT devices over a single twisted-pair cable without a local power supply. Ideal for installations requiring 5V power over long distances

Murata CR1220 5BL is a compact lithium manganese dioxide battery, ideal for powering small electronic devices. With its stable voltage and long life, it is perfect for watches, calculators and SRAM memories.

The VARTA Solar AA (R6) 800 mAh rechargeable battery is a nickel-metal hydride (Ni-MH) cell, specifically designed to power low-energy devices such as solar lights. It features optimized capacity, allowing for frequent charge and discharge cycles, ensuring long-lasting and reliable operation of devices.