This ACDelco HCM27SMF is a heavy-duty, Sealed Maintenance Free (SMF) dual-purpose battery designed for applications that require both high-cranking power and sustained, deep-cycle auxiliary power. It is ideal for Marine and Recreational Vehicle (RV) use.

Key Features:

• Dual Purpose: Suitable for engine starting (high CCA) and continuous auxiliary power (deep cycle performance with high Reserve Capacity).
• Sealed Maintenance Free: Eliminates the need for water topping.
• Durable Design: Constructed to be highly resistant to vibration and deep discharge, which is critical for marine and RV environments.
• Lead-Calcium Technology: Provides improved resistance to corrosion and overcharging.
• Dual Terminals: Equipped with both standard automotive and stud terminals for flexible accessory connections.