Sonnak Standard Reliable starting power. Available in a wide selection of sizes. Altro Gallery Caratteristiche e benefici Older cars Recommended for older cars and vehicles with basic electrical requirements Maintenance-free Designed for maintenance-free performance 3DX Grid Sonnak 3DX Grid ensures that the active mass stays fixed on the mesh, resulting in better electrical performance and longer lifespan Older cars Recommended for older cars and vehicles with basic electrical requirements Maintenance-free Designed for maintenance-free performance 3DX Grid Sonnak 3DX Grid ensures that the active mass stays fixed on the mesh, resulting in better electrical performance and longer lifespan