Batteries provide a reliable and continuous power supply for geotechnical and structural monitoring applications, both in temporary and long-term installations. Based on sealed lead-acid technology, batteries represent a robust, safe, and widely proven solution for field applications, ensuring stable operation even under harsh environmental conditions. Available in a range of capacities, batteries can be sized according to the energy demand of the installation, enabling power supply to sensors, data loggers, and data transmission devices for extended periods. They can be recharged via mains electricity or photovoltaic charging systems with charge controllers, making them particularly suitable for remote or standalone installations. High reliability, long service life, and compliance with international standards make these batteries ideal for continuous monitoring applications in critical infrastructure.