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I've searched the forum and could not find an answer. I am wanting to keep a group 27 AGM battery "maintained" during the winter while the boat it is in sits unused. I need to use solar to do that. Looking on Amazon there are 100s of choices. Could someone please point me to what I should buy?
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I have 5 of these on various classic autos I keep outdoors as well as my 12VDC portable lift. They work great as a battery maintainer but not as a charger for a deeply discharged battery. The LED is bright enough that I can easily see it in the bright sun. I buy these through a local Amazon Returns clearance center and get them for $20-$25 most times.
SUNER POWER Waterproof 12W 12V Solar Battery Charger & Maintainer Pro, Built-in UltraSmart MPPT Charge Controller, 12 Volt Solar Panel Trickle Charging Kits for Car Automotive Boat Marine RV Trailer
https://www.amazon.com/dp/B08K2T4RPH...MJR8FVKBYWF5WD
Dave W. Gilbert AZ
6.63kW grid-tie owner
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