BAILOUT":3nhvx0ly said:You should have them tested! I have a 2008 i bought new in january 2009 and just had it serviced, come to find out one of the batteries were dead.
TRUE BLUE":2j6v1xqp said:I have two optimax spiral wound batteries and was wondering how I can determine their condition. They're about three years old and are completely sealed. I don't want to find out the hard way
TRUE BLUE":2faz7sn4 said:These are Optimax 12v batteries. Completely sealed, so no hrygrometer test. They are considered spiral wound? which is a little different than AGM, but along the same idea, I guess. The only reasonable answer I got so far is take them out and have them load tested.
Megabyte":x5shr416 said:The batteries are Optima's, not Optimax (that is a Mercury outboard).
Those batteries are indeed AGM batteries (as opposed to gel or flooded cell).
You can expect to get years of service out of them with a little care.
Bryan 2530":3iw1u7fy said:Mega - Do you leave the boat plugged in over the winter?
Megabyte":3tjdsysh said:Bryan 2530":3tjdsysh said:Flooded cell batteries would be close to dead by spring, but not these.
MegabyteMegabyte":l1pa02qe said:Bryan 2530":l1pa02qe said:Mega - Do you leave the boat plugged in over the winter?
Nope, she is unplugged and in hibernation all winter.
I make sure the batteries have a full charge before I put her away, but she doesn't get plugged in until the spring for her top-off.
AGM's loose very little charge over time.
Flooded cell batteries would be close to dead by spring, but not these.
salbrent":3vabzz6h said:DoO you disconnect the battery terminals during winter storage?
Megabyte":30wxo63c said:salbrent":30wxo63c said:DoO you disconnect the battery terminals during winter storage?
Nope. I clean the terminals every spring, but I don't disconnect anything during the winter layup.
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