McMurdo VHF R5 SP3520 Sailor Lithium Battery: The McMurdo VHF R5 SP3520 Sailor Lithium Battery is designed to provide reliable power to VHF radios used in maritime communication. This high-performance lithium battery ensures long-lasting operation and reliable communication in emergency situations. Whether used for routine communication or in distress scenarios, the lithium battery ensures that the VHF radio will remain operational for extended periods. It is a crucial component for ensuring safety at sea and maintaining communication during critical moments.