The battery tester is a compact device that allows you to check in a very simple and quick way whether the batteries or rechargeable batteries we use are functional. Our devices require good batteries or accumulators and we are often not sure if our equipment has the right power supply to withstand, for example, during a trip or celebration. Nothing easier, you can check it using a tester.

Wall charger Akyga AK-CH-06 10W USB-A 5V / 2.1A black. Akyga AK-CH-06

A simple DC power supply with an output voltage of 12.6 V DC and a current of 10 A. The device can be powered with a voltage of 8 to 36 V DC. It can be used to charge Li-Ion batteries, it will also work well for powering devices such as LED lighting. SparkFun PRT-18722

Step-Down DC-DC converter module based on the D36V6F3 system. Input voltage 4 ... 50V, output voltage 3.3V (max. 600mA). Polol 3791

Balancer with measurement function for PWM, PPM and SBUS signals. It can be used as an all-purpose tool for checking battery health and testing signals used in modelling. ToolkitRC MC8

A universal charger with four charging sockets designed for Li-Ion, LiPo, LiFe, LiHV, Pb and Ni-MH batteries. It has a built-in power supply with power of up to 200 W, which allows charging with a current of up to 5 A. ToolkitRC Q4AC

Step-Down DC-DC converter module based on the D36V6F5 chip. Input voltage 5.2..50V, output voltage 5V (max. 600mA). Pololu 3792

Akyga AK-PS-02 is an advanced portable power station with high capacity and output, designed for a wide range of outdoor and emergency applications. Thanks to its diverse ports, it allows simultaneous charging and powering of multiple devices, from consumer electronics to medical equipment. It performs well during outdoor expeditions, on allotments, in campers, and as emergency backup power at home, offering energy independence and complete user safety.

The charger is designed for 1S and 2S LiPo batteries. It is powered by a USB type C connector. ISDT UC2

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

Step-Up/Step-Down DC-DC converter module. It has an input voltage of 2.8 to 22 V, an output voltage of 12 V and a maximum output of 2.5 A to 3.5 A. Pololu 4985

The S9V11MA switching step-up/step-down regulator efficiently produces a finely adjustable output between 2.5 V and 9 V whether it is higher or lower than the input voltage, which can range from 2 V to 16 V.  Pololu 2869 

This powerful step-up/step-down regulator efficiently produces an adjustable 4 V to 12 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%.

The Akyga AK-SC-E08 adapter converts the Type 2 connector to Type 1, allowing you to charge older models of electric cars and those imported from overseas at European charging stations. Made of durable materials, it guarantees long service life and reliability. Akyga AK-SC-E08

Solar energy management module designed for solar panels with a voltage of 6 V to 24 V. It uses a USB Type C connector and can supply current from a voltage of 5 V and a current of 3 A. Perfect for charging 3.7 V batteries. Waveshare Solar Power Manager (D )

A power strip with five E-standard sockets and a maximum current of 16 A. It is equipped with a switch, child protection and grounding. Sthor 72357

Step-Down DC-DC converter module based on the D24V150F7 chip. Input voltage 9..40V, output voltage 7.5V (max 15A). Pololu 2883

This synchronous switching step-down (or buck) regulator takes an input voltage of up to 40 V and efficiently reduces it to 3.3 V with an available output current of around 15 A. Pololu 2880

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