Patent ID: 11942656
Assignee: DARAMIC, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 12:
13. A method for decreasing water loss in a battery having one or more plates or electrodes which comprise antimony (Sb), the method comprising the steps of:
placing or providing a battery separator into a battery, wherein the battery separator includes a microporous polymer backweb with a serrated and staggered rib profile;
wherein the separator includes an amount of surfactant coated thereon;
wherein the amount of surfactant is in a range of 4.1 to 10.0 grams per square meter;

wherein the surfactant has a hydrophile lipophile balance (HLB) value from 1 to 3; and wherein the battery exhibits a decreasing water loss over an initial twenty one day period by at least 17% when compared to a battery without the surfactant.