The UBT series batteries from Salicru are high-performance and compact energy accumulators based on rechargeable lead-lead dioxide systems. They are particularly suitable for applications in uninterruptible power supply systems (UPS) and other security systems that require high-quality and reliable energy backup. The product range of UBT batteries includes models with 4.5 Ah, 7 Ah, 9 Ah, 12 Ah, and 17 Ah, all with 12 V. The sulfuric acid electrolyte is absorbed by the separators and plates and is immobilized. They are designed with gas recombination technology, allowing for the control of hydrogen and oxygen formation during charging, so that water does not need to be added regularly. The battery is fully sealed and hermetically closed, making it maintenance-free and suitable for use in any position. If the battery is accidentally overcharged and hydrogen and oxygen are formed, special unidirectional valves allow the gases to be vented outside, preventing overpressure inside the battery.