Sodium perborate tetrahydrate is used for making lead-acid battery positive plates specially with punching technology . Normally the surface of battery grids which are manufactured by expanded grid machine is more sleek than the grid manufactured by grid casting machine. This may causes dropping down of active material of positive(+) plates during battery charging. Sodium perborate tetrahydrate is preventing this problem by corroding the surface of positive grid and make the surface coarsely so that the grid can keep the active material strongly. The coarse surface can keep the active material more strongly than the sleek surface.

Sodium perborate is true inorganic peroxide containing a cyclic peroxide ring structure.
Sodium perborate is produced commercially in both tetrahydrate and monohydrate form.
Both tetrahydrate and monohydrate form of sodium perborate are odorless, easy to use, free flowing white granular powder. Sodium perborate is manufactured by reaction of sodium tetraborate, hydrogen peroxide, and sodium hydroxide.
Sodium perborate tetrahydrate is an important ingredient of many household laundry detergent powders, laundry bleach additive products and automatic machine dishwasher powders. Unlike sodium percarbonate and sodium perphosphate, perborate is not just an addition compound of peroxide, but contains true peroxygen bonds, Sodium perborate tetrahydrate has good storage stability when blended with many ingredients of formulated products for use in temperate climates. When used in laundry powders, sodium perborate tetrahydrate provides a stable, cost effective source of active oxygen.
Sodium perborate tetrahydrate is also used for making lead-acid battery positive plates.
Normally the surface of battery grids which are manufactured by expanded grid machine is more sleek than the grid manufactured by grid casting machine. This may causes dropping down of active material of positive(+) plates during battery charging. Sodium perborate tetrahydrate is preventing this problem by corroding the surface of positive grid and make the surface coarsely so that the grid can keep the active material strongly. The coarse surface can keep the active material more strongly than the sleek surface.