Abstract: A venting plug for stationary batteries includes a support body, screwable into an upper opening of a battery element, provided with at least one topping-up hole intended to cause an electrolyte topping-up liquid introduced into the upper part of the support body to precipitate into the battery element, a porous element, mounted in the upper part of the support body, intended to act as a filtering barrier for gases rising up from the battery element towards the outside along the topping-up hole.
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