The growing demand for photovoltaic systems connected to off-grid systems, along with the increasingly widespread use of low-consumption technologies applied to LED lighting and information displays, has led to the development of this battery, which stores energy from the sun or other sources to provide power to citizens at night. Saft's new tubular module aims to address two of the main challenges of integrating energy storage into street furniture, explains Javier Sánchez, sales manager of Saft Batteries' SBG division. The first is minimizing the battery's footprint. Thanks to its high-cycle Ni-MH technology, maintenance-free lifespans of over 15 years can be achieved without the need to increase the battery size by five or even ten times, as required by lead-acid gel technologies. This significantly improves battery integration within the panel or lamppost structure, allowing for a more streamlined design that blends seamlessly into the urban landscape. Furthermore, its cylindrical shape allows the battery to be installed inside the lamppost mast or any other tubular structure, eliminating the need to build a niche under the pole or reinforce the base to place the batteries at the top, thus minimizing vandalism or theft. From a technological standpoint, both the new tubular modules and their predecessors, the prismatic Ni-MH Smart Modules, feature electronics for managing battery charge and discharge, completely removing the user's responsibility for battery protection. They also include a charge controller that can be connected directly to a solar panel or a stabilized voltage source, enabling monitoring of the system's energy variables, or even, if required by the application, connecting to a GSM modem for remote monitoring of the entire system.

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