The R3 Ni-MH AAA 1100mAh XTREME battery is a high-quality nickel-metal hydride (Ni-MH) rechargeable battery with a capacity of 1100 mAh and a voltage of 1.2 V, designed to power devices such as digital cameras, portable CD players, toys, tools, and flashlights. It features the ability to withstand over 1000 charge cycles, no memory effect, and excellent resistance to external conditions such as temperature and moisture.

The compact (0.4″ × 0.5″) D24V5F2 synchronous buck voltage regulator takes input voltages between 3 V and 36 V and efficiently reduces them to 2.5 V while allowing for a maximum output current of 500 mA. This regulator offers typical efficiencies between 80% and 90%. The pins have a 0.1″ spacing, making this board compatible with standard solderless breadboards and perfboards.

MPPT charge controller module designed for photovoltaic systems. It can charge one lithium-polymer cell, and thanks to MTTP technology, optimal charging parameters are used for the prevailing conditions. SparkFun PRT-12885

Adapter for power supply with 5.5 x 2.1 mm input and 4.0 x 1.7 mm output

A boost charger module that allows you to charge batteries from USB, DC, or solar panels, and power devices requiring 5V. Equipped with the BQ25185 and TPS61023, it provides high efficiency, optimized power consumption, and support for 500mAh or larger batteries. Adafruit 6106

Compact charger module that allows you to power your electronics projects from USB-C, DC power (5-18V) or solar panel. Supports various cell types (LiIon, LiPoly, LiFePO4) and offers a choice of charging currents (250mA, 500mA, 1A), automatically optimizing energy harvest from solar panels without the need for an additional MPPT. With built-in power path management, status LEDs and regulated LOAD output (up to 4.5V), it is ideal for mobile and energy-independent projects. Adafruit 6091

Sthor brand extension cord with anti-overvoltage and overload protection, grounded sockets, child protection, power cut-off switch, solid three-wire cable with a cross-section of 1.5 mm², plastic casing, allows you to power and protect devices at home and in the office, with maximum load 3500 W and thermal protection 16A/250V. Sthor-72371

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.

Alkaline button batteries marked as LR54, AG10, LR1130, L1131F are a reliable source of energy for devices requiring small but powerful batteries. Supplied in practical blisters of 10. They are easy to store and use, ensuring long-term and stable operation of the devices. They not only provide convenience, but also efficiency and reliability, making them a popular choice among office and home users. Vinnic L1131F

The S9V11F3S5CMA 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 2 V to 16 V. (Note: minimum start-up voltage is 3 V, but it operates to 2 V after that.)

Solar panel with an output voltage of 5.5 V and a power of 0.4 W. It has dimensions of 65 x 65 x 3 mm and pads for soldering the wires

Step-Up converter U3V70F15 with an output voltage of 15 V, an input voltage from 2.9 to 15 V and a maximum output current of 10 A. Pololu 2896

The charger module is designed for 3 Li-Ion cells. It is equipped with a micro USB and USB type C connector and supports fast charging (QC).

Step-Up converter U3V70F7 with an output voltage of 7.5V, an input voltage from 2.9 to 7.5 V and a maximum output current of 10 A. Pololu 2893

Solar energy management module designed for photovoltaic panels. It allows you to charge LiPo 1S batteries with a rated voltage of 3.7 V

Set of 8 Panasonic Eneloop R3/AAA rechargeable batteries with 800 mAh capacity and 1.2V voltage. Packaged in eco-friendly packaging (blister). Panasonic BK-4MCDE/8BE

Step-Up converter U3V70A with an output voltage from 4.5 to 20 V, an input voltage from 2.9 to VOUT and a maximum output current of 10 A. Pololu 2890

The 9V (6F22) battery holder allows for safe and convenient mounting of the battery in electronic devices. Made of durable plastic, it provides protection against damage and is available in various versions. Bat_case_6F22