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<blockquote data-quote="bigbrad123" data-source="post: 296899" data-attributes="member: 806"><p>So here’s the situation.&nbsp; I have an AGM battery for my boat.&nbsp; It’s 2 years old.&nbsp; I store it at my dads place over the winter and take out the battery.&nbsp; I left the battery at his place over the winter.&nbsp; So this spring, my dad hooked up the battery to move the boat.&nbsp; Apparently he hooked it up backwards.&nbsp; I am not sure if he charged it or not when it was hooked up to the boat or before he put it in the boat.&nbsp; So here’s how I found out it was done wrong......I went and picked up the boat and got it home.&nbsp; The battery was dead.&nbsp; I figured maybe he just didn’t charge it that much.&nbsp; So, I put the charger on it only looking at the boat cables (red and black) and didn’t look at the actual battery.&nbsp; I then proceeded to charge it for around 18 hours.&nbsp;&nbsp; I had my son take the charger off so I didn’t look at how much it was charged, but I know it was charged somewhat as I moved the boat motor down.&nbsp; Today I came back to it and tried to move the motor again and it barely moved.&nbsp; After trying to figure out why it was drained, I noticed the cables were put on incorrectly by my dad.&nbsp; So now the cables were on wrong and I charged it “backwards” with the red on the negative and black on positive.&nbsp; So...question is whether the battery is shot?&nbsp; I am charging it again now outside of the boat.&nbsp; It appears to be charging.&nbsp; I don’t have a volt meter to check it though, but the battery charger meter is moving in the right direction.&nbsp;&nbsp; Thoughts?</p></blockquote><p></p>

[QUOTE="bigbrad123, post: 296899, member: 806"] So here’s the situation. I have an AGM battery for my boat. It’s 2 years old. I store it at my dads place over the winter and take out the battery. I left the battery at his place over the winter. So this spring, my dad hooked up the battery to move the boat. Apparently he hooked it up backwards. I am not sure if he charged it or not when it was hooked up to the boat or before he put it in the boat. So here’s how I found out it was done wrong......I went and picked up the boat and got it home. The battery was dead. I figured maybe he just didn’t charge it that much. So, I put the charger on it only looking at the boat cables (red and black) and didn’t look at the actual battery. I then proceeded to charge it for around 18 hours. I had my son take the charger off so I didn’t look at how much it was charged, but I know it was charged somewhat as I moved the boat motor down. Today I came back to it and tried to move the motor again and it barely moved. After trying to figure out why it was drained, I noticed the cables were put on incorrectly by my dad. So now the cables were on wrong and I charged it “backwards” with the red on the negative and black on positive. So...question is whether the battery is shot? I am charging it again now outside of the boat. It appears to be charging. I don’t have a volt meter to check it though, but the battery charger meter is moving in the right direction. Thoughts? [/QUOTE]

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