Bosch SM Mega Power batteries are 100% maintenance-free automotive starter batteries featuring advanced Calcium-Calcium technology that enhances starting performance, service life, and corrosion resistance. They are designed to deliver strong cold-starting power, dependable performance under typical and demanding vehicle electrical loads, and minimal water loss over the battery's lifetime. The sealed design prevents acid leakage and reduces maintenance needs.
Key technical features are typical across these models:
• Maintenance-free construction, no need to check or add water throughout service life.
• Calcium-Calcium grid technology provides better corrosion resistance, improved cyclic endurance, and higher charge acceptance than conventional lead-acid batteries.
• Sealed, leak-resistant case with labyrinth lid reduces electrolyte loss and improves safety and durability.
• High cold cranking power for reliable starting in warm and cooler conditions.
• Designed for passenger vehicles and light commercial applications with standard automotive electrical systems.
Model-Specific Highlights
• 42B20L Compact maintenance-free starter battery ideal for small to mid-sized passenger cars. Delivers reliable starting power for vehicles with engines suited to this group size.
• 65B24L Medium-capacity battery with a balance of starting power and reserve capacity for a wide range of mid-sized passenger cars.
• 80D23R / 80D23L Larger group that offers higher capacity and stronger cranking performance for vehicles with greater electrical demands.
• 90D26L Further increased capacity and cold cranking ability for vehicles requiring robust starter power and longer reserve.
• 105D31L / 105D31R High-capacity units designed for larger vehicles and engines, providing strong starting performance and substantial reserve capacity for accessories and extended idle times.
Typical Benefits
Across these models, you’ll find consistent benefits that make Bosch SM Mega Power batteries suitable for everyday automotive use:
• Durability and long service life thanks to improved grid alloy and sealed design.
• Low maintenance requirements (maintenance-free throughout service life).
• Improved cold-start performance compared to basic flooded batteries.
• Good vibration resistance and safety features like flame arrestors and spill-proof construction.
