Tetrabasic Lead Sulfate (4BS) Seed Crystal

Micronized 4BS crystal seeds added to positive paste to promote uniform tetrabasic crystal growth during curing, extending battery cycle life, stabilizing 20-hour capacity, and eliminating premature capacity loss.

Tetrabasic lead sulfate (4PbO·PbSO4, 4BS) is a premier structural nucleating agent for positive plates in high-performance lead-acid batteries. By establishing a uniform, interlocking crystalline skeleton, it drastically improves cycle life and charge acceptance.

4BS seeds are synthesized under strictly monitored reaction conditions from high-purity lead oxide and sulfuric acid to ensure optimal particle size distribution.

IPCOZ has developed proprietary 4BS seeding technology to empower battery manufacturers with enhanced endurance and consistent plate curing.

Download Technical Data Sheet (TDS)

4BS Seed Crystal SEM

4BS Performance Curves

4BS Crystalline Matrix