The battery Bosch S40 27 is a traditional lead-acid battery commonly used in most vehicles. Its capacity is 70 Ah, and the maximum starting current is 630 amperes. It’s worth noting that the positive is on the left side. A battery with B1 mounting is equipped with a special strip located at the base of the casing, which runs along its longer sides. This allows it to be securely fastened to the surface using an appropriate clamp or bracket, ensuring stability and safety while driving.