ACDelco Gold (Professional) Automotive AGM Vehicle Batteries are a high quality alternative to Original Equipment (OE) parts. These batteries have high cycling capabilities, are remarkably charge-receptive, and are necessary for æstart/stopÆ vehicle applications. The Absorbed Glass Mat design is 100% leak and spill proof because the electrolyte is permanently held in the glass mat separator instead of free flowing within each cell. Oxygen recombination helps minimize water loss and helps ensure maintenance-free performance. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional. ? PROPOSITION 65 WARNING: Battery posts, terminals and related accessories contain lead and lead compounds, chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. Batteries also contain other chemicals known to the State of California to cause cancer. Wash hands after handling.