Bosch Batteries are simply the best on the market. Absolutely maintenance-free Bosch-Batteries with PowerFrame-Technology for significantly more starting power, longer life, tolerance of short trips and resistance to extreme temperature fluctuations - even after long periods of non-use.PowerFrame grid technology represents a revolutionary new development for Bosch batteries, employing a patented stamping process. As compared to the conventional production method, the battery components offer far superior performance and quality.