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Post by islandrob on Jan 4, 2023 10:30:26 GMT -5
My 2010 2860 is original and has two batteries (one for port engine start, other for starboard and house). The charger is a 10 Amp dual battery charger and my 2 refrigerators are 12V. When on shore power, the house battery drains in a day if the refrigerators are left on. It seems that the charger is #1) not able to put out enough to overcome the refrigerator drain or #2) is stuck in trickle mode and never compensates. Is 10 Amp enough to run the two refrigerators and nothing else? If I get a 30 Amp charger, will that allow me to keep the refrigerators on? How can I test if theory #2 is the issue?
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Zane
Full Member
Posts: 75
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Post by Zane on Jan 4, 2023 13:54:19 GMT -5
10 amp is a little light , I think?
When I had a 2665 I think I had a 20 amp charger.
The 7 cu ft fridge/freezer on my boat draws 4.4 amps. If we assume both of yours are close to this the draw would be 8-9 amps just for the fridges, not to mention whatever else is being used. Note that the factory bulbs in the pucks lights are 10watts if I recall correctly so nearly an amp draw PER light.
If you have an amp meter inside you can set your typical loads and see what the draw is with the things you typically use.
A 30 amp absolutely would keep up unless you have some sort of electrical problem.
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Post by cptbill on Jan 6, 2023 14:53:55 GMT -5
Agreed, needs more battery charger, but I might suggest adding a converter to to run the house 12v system while on shore power. You can also add a house battery and a charger for that battery. there are smart systems out there that can determine which battery need to be charged and it can also work with your alternators too
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