Lead-acid battery construction

SLA battery
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Remark: image 3 still incorrect, will correct this soon

Filler material

Batteries can have either lead oxide (PbO) or lead tetroxide (Pb3O4) as positive filler material.

Repair

Only the positive plates and filler material are damaged (and not the negative ones) when the life expectancy of the battery has been passed.Thus, generally, only these plates will need to be replaced. Any other parts of the battery will not.[1]

References

  1. VARTA:Technische leergang: Startbatterijen
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Authors KVDP
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Cite as KVDP (2010–2025). "Lead-acid battery construction". Appropedia. Retrieved November 28, 2025.