LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Volvo >> 2002 >> S80 Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 7 (Control Modules - Design And Function - 1 Of 4) >> Battery (All) >> Terminology >> Active Material
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Active Material

WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2009 Volvo S60, 2008 Volvo S60, 2007 Volvo S60, 2006 Volvo S60, and 2005 Volvo S60. However, it is still accessible from the selected car via links, so may be relevant.

The active material consists of lead oxide in the positive plates and porous lead in the negative plates. The active materials react with the sulfuric acid in the electrolyte during charging and discharging according to the following chemical reaction:

PbO2 + Pb + 2 H2 SO4 = 2 PbSO4 + 2 H2 O