New marine battery wont fully charge.

J

jjj70095

Active member
I had a new marine battery put in my sea doo sportster boat. It starts fine now, but when I plug in the maintainer to charge it fully, it stays in the red light area after a day plugged in. Is this normal? I have a battery maintainer on it.
 
J

jjj70095

Active member
So new batteries need to be charged a bit? I thought they would be ready to plug and play. That is what dealer said. It is an Interstate marine battery.
 
G

garageguy

Well-known member
Try a regular battery charger, charge for a couple hours. Measure the battery voltage with a meter after charger is disconnected. Maybe your battery tender is junk leading up to you original battery failure. A fully charged battery should read well over 12volts
 
J

jjj70095

Active member
I will wait one more day, it has been on for 2 days now and still is red. Maybe the maintainer was not installed correctly. The cause of the other battery failure was I left on the bilge pump for a week. When I covered the boat, it must have turned on the switch. Now what I do is turn off the electrical switch after each boat ride.
 
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