Charging Forward!

Guest has been designing battery products for over 45 years. 

Our battery chargers, maintainers, battery switches and dynaplates are designed and built to stand up to today's punishing marine environment. Materials are selected to provide toughness and durability over a long product lifespan. The products are engineered to precise performance specifications and the quality systems in place ensure each product meets these specifications.

Battery Chargers

Our newest generation of On-Board battery chargers includes leading advancements in digital charging technology and waterproof design/construction. Designed to maximize individual battery performance, extend battery life and show battery status better than ever before.

Every Guest On-Board charger has dedicated outputs that deliver the full amount of amps per bank. The easy to read graphics indicates the status of each battery bank through the charge process.

The new line of Guest chargers range from 5 to 40 amps and 1 to 4 battery and are designed to charge 12V flooded lead acid and AGM batteries.

These are all 100% waterproof (IP67) and shock resistant for all fresh and salt water applications

Battery Maintainers

A new Guest 1.5 amp battery maintainer is highly reliable, extends your battery life, will charge, maintain and re-charge your battery if it falls below 12.9V. The maintainer can be safely connected to your battery for short or long periods of time. To increase versatility the maintainer comes with alligator clips and ring terminals for the output cable.

Battery Switches

Highly durable, time proven battery switches. The range in products includes 230 to 600 amp in On-Off and selector switches with or without Alternator-Field Disconnect. These switches are built with Heavy-Duty copper sweep contacts to ensure positive circuit control. Rugged internal components protected by a tough, impact resistant polycarbonate housing that are impervious to the elements.


For hull bonding and grounding, these dynaplates improve performance of electronics and reduces RF interference. The dynaplates deter electrolysis and galvanic corrosion.

Marinco Catalog

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  • Industrial Catalog