Attwood Battery Maintenance Charger

Keep your boat’s 12V battery healthy and ready for the next voyage with the Attwood Battery Maintenance Charger — a fully automatic, on-board charger built for marine use.

• 1.5 A maintenance current: Maintains 12V batteries at a precise 1.5 A to prevent overcharging and extend battery life.
• On-board, fully automatic operation: Mounts on your vessel and automatically maintains charge with minimal oversight.
• Water-resistant marine enclosure: Designed to withstand on-board moisture and environmental exposure.
• Safety protections: Short-circuit protection and reverse polarity protection safeguard your battery and electrical system.
• LED status indicators: Clear charging progress at a glance for easy monitoring.
• 1-bank operation: Configured for a single battery bank to simplify setup and use.
• Compatibility and model details: 12V battery maintenance; Manufacturer: Attwood Marine; Part Number: 11900-4
• Prop65 warning: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

With a precise 1.5 A maintenance charge, this charger keeps your battery in peak condition without risking overcharge. Its onboard, automatic design minimizes maintenance, while the water-resistant enclosure ensures durability in marine environments. Built-in safety protections help safeguard both your battery and electrical system, and the LED indicators provide at-a-glance visibility of charging progress. Designed for a single battery bank, it delivers a straightforward, reliable charging solution for ongoing marine use.