When I bought my boat new in 1999, a Ranger R83 it came with the batteries. I just changed them out this summer because they were finally starting to get weak. I always claen the post and also charge them as soon as I get home. I also never leave the onboard charger on because it seems that the charger is always charging the batteries and they seem to have too much water coming out of the batteries. I asked the charger manufacturer and they told me the charger will always send some voltage to the batteries. I hope these new batteries which I purchased from BPS because they were on sale will last as long as the originals. I have used the Wally World brand for years before this and they always seemed to be good for at least 4 years. Just my 2 cents worth.
:-)
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