Sealed maintenance-free lead-acid batteries series DTS DELTA brand is manufactured by AGM technology (electrolyte absorbed in glass fiber separators) and equipped with VRLA valves. Due to a wide range of batteries and their high performance, are recommended for use in a variety of uninterruptible power supply systems, including exacting electrical appliances (submersible and circulation pumps, boilers of heating systems), emergency power supply, and other electrical devices.