2020 SX210 engines will not start

[Kmiller50]

I have a 2020 SX 210. I store my boat in the summer at a dry stack facility. I went to pick the boat up and bring it home recently and the battery was dead. I had to use a jump box to get it started. It drove fine back to the ramp and when I got home I charged the battery. I went to change the oil and now the engines will not turn over and the info screen and radio will not come on. The blower, lights, horn and bilge all come on but nothing else. Any idea what’s going on?

 

[Russell]

Your battery maybe fried. Aka not enough power.

 

[Kmiller50]

Your battery maybe fried. Aka not enough power.

I thought that might be the case. I took it back to where I purchased it in May and they tested it. It passed and they told me it was fine.

 

[212s]

I thought that might be the case. I took it back to where I purchased it in May and they tested it. It passed and they told me it was fine.

How did they test it - with a meter on the battery in the boat?
Or did they pull the battery and bench test it with a load?

I'm guessing the former and they simply checked surface voltage which doesn't test for "starting" conditions with a heavy load. I'll also guess the battery is fried like Russel said and you need to replace it. Make sure you keep it charged and maintained somehow...on-board charging is usually the best way with a good smart charger that will charge and maintain your batteries during non-use periods. Putting it in a dry-stack for several weeks can weaken good batteries. Batteries that are already weak can be fried in a few weeks of storage. If you don't drive the boat long enough to fully re-charge the batteries in the water, then sticking in a dry-stack with partially charged batteries for weeks is a sure fire way to kill them.

 

[Kmiller50]

I switched the battery this morning with a new battery and still nothing from the engines.

 

[Kmiller50]

UPDATE… I found a fuse on each engine that had blown. I switched those out. Now the engines turn over but still no radio.

 

[212s]

UPDATE… I found a fuse on each engine that had blown. I switched those out. Now the engines turn over but still no radio.

Look for a fuse for the radio - I think there's one at the back of the head unit.

A bigger question is why did the fuses blow? Fuses only blow when too much current is drawn through them, like a short. If you can find the cause of the blown fuses, that will probably answer all your questions.

 

[Maslin]

Look for a fuse for the radio - I think there's one at the back of the head unit.

A bigger question is why did the fuses blow? Fuses only blow when too much current is drawn through them, like a short. If you can find the cause of the blown fuses, that will probably answer all your questions.

Or when you jump a battery backwards or on the 24V setting…