Lenovo BATTERY 1cell 3V DBV/DBV (MPN 5B11Q29234) is a spare battery listed for Lenovo equipment. It has one cell and a nominal voltage of 3 V, so it is intended as a replacement for equipment designed for this specific battery.
The battery type is zinc-carbon. The single-cell format distinguishes it from a multi-cell notebook battery pack. Lenovo is the listed compatible brand, but compatible device models are not specified.
The listing confirms the cell count, voltage, chemistry and spare-part purpose. It gives no capacity or dimensions, so check that the replacement matches the battery required by your equipment.