All Charles Battery Isolators are ignition protected and prevent over-charging. They feature a heat chamber design, protective boots on heavy-duty 5/16” battery and alternator studs, corrosion-resistant casings, are compact and easy to install. Either leg of the Charles Battery Isolator handles the entire alternator output amperage rather than a portion of the rated load. 1-year warranty, made in the USA.

Ideal for all marine applications including gas engines.