High-Output 12V Outboard Alternator for High-Demand Marine Charging Systems

Upgrade your vessel's charging capability with a high-output 12V outboard alternator engineered for modern marine electrical systems. Delivering a rated output of 225 amps (3,500 watts), this alternator is designed to recharge large lithium battery banks significantly faster than conventional OEM alternators while supporting high-current onboard equipment such as stabilisers, air conditioning, refrigeration, inverters, trolling motors and premium audio systems. Featuring a Verado mount configuration, case ground design and support for both internal and external regulation, it provides dependable charging performance from idle through to cruising speeds. The kit includes the alternator, battery sense harness, fuse link, ground wire and OEM replacement belt for a complete installation.

Key Features

• 225 Amp High-Output Charging: Produces 225 amps of rated charging capacity (3,500W) to support high electrical demand marine applications.
• Outstanding Idle Performance: Begins charging at 700 RPM engine idle and delivers a sustained 95A at idle to keep battery systems charging even at low engine speeds.
• Faster Battery Recharging: Delivers up to 2–3 times faster charging than typical OEM alternators, helping reduce engine run time required to replenish battery banks.
• Supports High-Power Marine Equipment: Suitable for powering lithium battery systems, stabilisers, air conditioning, refrigeration, trolling motors, water makers, ice makers, premium audio systems and inverters.
• Internal or External Regulation: Compatible with either internal or external voltage regulation for flexible charging system integration.
• Verado Mount Configuration: Features a Verado mounting arrangement with a case ground design for compatible installations.
• 75mm K6 Pulley: Supplied with a 75mm six-rib K6 pulley for correct belt alignment on compatible applications.
• Complete Installation Kit: Includes alternator, battery sense harness, positive fuse link, ground wire and OEM replacement alternator belt.
• Heavy-Duty Marine Construction: Built with premium internal components for continuous high-output operation in demanding marine environments.
• Zeus Omega Compatible: Integrates with the ARCO Zeus Omega charging system for advanced monitoring and charging management when required.

Built for vessels with substantial onboard power requirements, this high-output alternator delivers dependable charging performance while reducing reliance on generators and shore power.