The Guest 28106 is a 6-amp, single-bank onboard charger built to be mounted permanently and forgotten about: sealed and epoxy-filled with an IP68 waterproof rating, microprocessor-controlled charging, and universal 120/230V input. Plug the boat in at the dock and the battery is maintained.
Who it’s for
- Boats with one cranking or house battery
- Bass boats, skiffs, and runabouts kept on a lift or trailer with shore power
- Owners replacing a portable charger with a permanent install
Key features
- 6A / 12V single-bank output
- Microprocessor-controlled charging
- 120/230V universal AC input
- Isolated output
- Sealed, epoxy-filled construction, IP68 waterproof
Choosing a charger
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Count your banks. Each battery bank needs its own charger output. One battery means a 1-bank charger like this one.
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Match the chemistry. Flooded, AGM, gel, and lithium batteries need different charge profiles.
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Size the amps. For lead-acid, roughly 10–25% of the bank’s amp-hour rating is a common rule of thumb. See our marine battery charger guide.
Related: battery and power · marine wiring
Before ordering
Confirm battery chemistry, bank capacity, AC input connection, fuse protection, mounting ventilation, and cable reach.
What you're getting
Brand: Guest
Part Number: 28106
Fulfillment: Ships from a U.S. marine distribution warehouse
Warranty: Manufacturer warranty terms vary by brand and product
Shipping & returns
Shipping options and charges are shown at checkout. Orders normally ship from a U.S. distribution warehouse. Manufacturer warranty eligibility and claim procedures vary by brand; review the manufacturer’s current terms before ordering. Questions can be sent to support@sonarkmarine.com.
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