Join Date: Nov 2002
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I've got the Guest model that puts 5 amps into each of two banks on my boat (each charging a group 24), and a Guest 5 amp on my camper, charging a group 27.
They charge batteries OK, but don't like to carry any real shore power load. If we have any amount of shore power load going, the red and green lights of the charger blink alternately. The Guest manual doesn't mention this, but I presume it's overheating. If you turn it off for a while, and turn off the DC loads, it works normally. Consequently, we tend to leave the charger shut off when we're on board and using the 12 volt lights, then turn the charger back on at night to recharge.