The HYDROSTIK PRO cartridge is equipped with a housing made of aluminum alloy materials and an AB2 alloy for hydrogen absorption. After activation, the AB2 alloy is capable of absorbing hydrogen, expanding, and releasing heat until saturation. The internal pressure of the fully charged cartridge remains at 30 Bar at ambient temperatures of 20 °C to 25 °C, and the weight is approximately 0.9 grams higher. Once the cartridge valve is opened and the pressure is reduced, hydrogen is continuously released from the alloy, which absorbs heat. As the heat absorption rate decreases, the hydrogen release rate also declines. The materials of the cartridge housing consist of an aluminum alloy with excellent thermal conductivity properties, which can facilitate heat transfer of the alloy during the gas absorption and release processes. The gas absorption efficiency of the alloy can be significantly affected by oxidation due to moisture. Therefore, dry hydrogen gas with a purity of at least 99.99% is required for the charging process.