Battery maintenance

[MattSX1902012]

I purchased a 3A battery charger / maintainer. Everything seems to be working smoothly until I read the instructions.

It says when charging a boat battery, remove the battery as this requires special equipment. But you can charge directly into a car. Is this if the boat is in the water?

Can I just clap to the battery in place and charge it?

 

[GiddYupJoe]

I purchased a 3A battery charger / maintainer. Everything seems to be working smoothly until I read the instructions.

It says when charging a boat battery, remove the battery as this requires special equipment. But you can charge directly into a car. Is this if the boat is in the water?

Can I just clap to the battery in place and charge it?

Did you purchase a marine grade charger? I personally use a battery tender brand maintainer (not specifically for marine use) for the past 5 years while the batteries are on the boat in a lift at the lake with no issue at all.

 

[TOGA]

I use a car / motorcycle maintainer in yard on trailer with no issues. I turn batteries of at Blue See Add-a-Battery switch, plug in and leave it.

Been doing this for years with no issues.

 

[MattSX1902012]

Thanks. It's a general battery charger. I'm going to go with it.

 

[BlkGS]

Does anyone have experience with any outdoor rated chargers? I'm trying to figure out my solution for my boat which will be kept in dry storage at the marina. Thinking an outdoor since it will still get wet, and while covered by the building, it's still open air. Theres a 8 amp Stanley one for like 30 bucks I've been looking at.

 

[jEt_jAk]

I current use a ProSport onboard charger which may be an option. It stays permanently attached to the boat.

 

[Jgorm]

I just throw whatever 3 stage charger i have into the boat, or under the hood on outdoor cars. Don't overthink this.

 

[OhioCop]

I bought a small lithium jumper for my Boat battery’s and it’s not jumping my battery’s . Does anyone have a recommendation for a good marine battery jump starter that is maybe rechargeable
that will jump a totally dead battery? I went to a few automotive stores and they were clueless.

 

[bumpy]

Totally dead may be just that; have you checked the electrolyte levels in the cells? A cheap hydrometer from the auto parts store will work. The lead plates in the battery can get a layer of sulfate that prevents electron flow, so it may take a 'desulfation' charge to wake up a 'mostly dead' battery. Good luck!

 

[Jgorm]

Totally dead requires old school jumpers. all the new ones have a safety feature where they don't output voltage until they sense voltage. If there battery is below about 9 they don't turn on. You need the transformer kind that spark when you touch the leads together. But, if your battery is below 8 or 9v, is probably trash. I did partially recover an agm battery in my Jeep that was at 4v, but I'll be replacing it very soon.

 

[OhioCop]

Totally dead requires old school jumpers. all the new ones have a safety feature where they don't output voltage until they sense voltage. If there battery is below about 9 they don't turn on. You need the transformer kind that spark when you touch the leads together. But, if your battery is below 8 or 9v, is probably trash. I did partially recover an agm battery in my Jeep that was at 4v, but I'll be replacing it very soon.

Thank u

 

[OhioCop]

Totally dead may be just that; have you checked the electrolyte levels in the cells? A cheap hydrometer from the auto parts store will work. The lead plates in the battery can get a layer of sulfate that prevents electron flow, so it may take a 'desulfation' charge to wake up a 'mostly dead' battery. Good luck!

Thank u

Totally dead may be just that; have you checked the electrolyte levels in the cells? A cheap hydrometer from the auto parts store will work. The lead plates in the battery can get a layer of sulfate that prevents electron flow, so it may take a 'desulfation' charge to wake up a 'mostly dead' battery. Good luck!

thank u