There is provided a valve regulated lead-acid battery excellent in low-temperature high-rate discharge performance. The valve regulated lead-acid battery of the present invention is a valve regulated lead-acid battery including an element made up of positi...

The present invention relates to a method for manufacturing a lead-acid battery 100. The method includes: an operating pressure inspecting process of inspecting operating pressures of exhaust valves 6 which are installed in vent plugs 4; a vent plug mounti...

A lead-acid battery includes a positive electrode plate including a positive electrode grid and a positive active material filled in the positive electrode grid and formed in advance, a negative electrode plate 2 including a negative electrode grid 4 and a...

A lead-acid battery comprises a flame arrestor plug (1) for controlled venting of gases from the battery through the vent hole (3), wherein the flame arrestor plug has a valve element (5) for controlling the venting of gas from the vent hole and a plug por...

Disclosed is a charging control method including: a full charging step of charging a lead storage battery until the battery is fully charged; a refresh charging step of performing refresh charging of charging the lead storage battery with a predetermined r...

A valve-regulated lead-acid battery is provided including separators comprising glass microfibres, plastic microfibres or a mixture of both, characterised in that the separators consist substantially of the cited glass microfibres, plastic microfibres or a...

An electric accumulator battery, comprising a recipient which is closed by means of a lid composed of a lower lid and an upper lid joined together, delimiting an intermediate chamber. The lower lid has filling holes (15), in which closing stoppers with a g...