The Step-Down D24V6F9 Buck Voltage Regulator module gives the output voltage of 9V with a wide input voltage range of 11.5-42V and a maximum output current of 600 mA. Pololu 2108

Rechargeable NiMH Battery Pack: 7.2 V, 900 mAh, 3x2 AAA Cells, JR Connector

Rechargeable NiMH Battery Pack: 4.8 V, 350 mAh, 4x1 2/3-AAA Cells, JR Connector

Rechargeable NiMH Battery Pack: 4.8 V, 2200 mAh, 4x1 AA Cells, JR Connector

Rechargeable NiMH Battery Pack: 6.0 V, 900 mAh, 5x1 AAA Cells, JR Connector

Rechargeable NiMH Battery Pack: 6.0 V, 2200 mAh, 5x1 AA Cells, JR Connector

Holder for 4 AA R6 batteries with a flap and a switch is an ideal solution for people who need a simple and reliable way to connect AA batteries to obtain a voltage of 6 V

Holder for 3 AA R6 batteries with a flap and a switch is an ideal solution for people who need a simple and reliable way to connect AA batteries to obtain a voltage of 4,5 V

Rechargeable NiMH AAA Battery: 1.2 V, 900 mAh, 1 cell

Rechargeable NiMH AA Battery: 1.2 V, 2200 mAh, 1 cell

3-AA Battery Holder

This powerful boost regulator efficiently boosts input voltages as low as 2.9 V to a higher, adjustable output voltage between 9 V and 30 V while allowing an input current as high as 5 A.

The Step-Down D24V6F12 Buck Voltage Regulator module gives the output voltage of 12V with a wide input voltage range of 15-42V and a maximum output current of 600 mA. Pololu 2109

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

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

DFR0379

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

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 MyoWare Power Shield is designed to take two standard CR2032 coin cell batteries to power the MyoWare Muscle Sensor. We have made this board in a way that the coin cell batteries are connected in parallel for extended capacity at a nominal 3.0V. DEV-13684

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.