It is not possible to service this type of battery or replace the electrolyte. They have a much shorter life and cost considerably more than liquid filled batteries. These batteries require no maintenance, tolerate low temperatures, do not spill and do not produce corrosive gases. They are good at remote sites where maintenance is not possible and cold weather prevails. Precise charge control is critical.
Storage batteries are the heart of an independent power system.
They also provide a reserve of available energy to run loads that require more power than that provided by the charging source. Batteries wear out and must eventually be replaced. Regular monitoring and maintenance will extend the life span of your battery bank and save you money. The deeper they are discharged, the shorter their life span will be. Batteries contain toxic materials and should be disposed of properly.