How Long Will Batteries Last...

[Brian98133]

My R-23 has always been stored where I am able to plug in and keep the batteries charged. However, I have an opportunity to get inside heated storage which I am super excited about!

The problem... For fire code reasons, the storage facility does not allow electrical to be run to the boats inside. So my batteries will sit with no trickle chargers keeping them fresh. Even the solar will not be effective because it's only lit when the bay doors are open, and/or the small lights inside are on, which is quite minimal.

This time of year, I'm out at least a couple times per month... but last winter, we went 5 months without the opportunity to get out.

Does anyone in a similar situation have any helpful hints, and/or warnings? I'm afraid this is going to diminish the batteries more often, which is not good. I still have my 2020 factory batteries.

Thanks in advance!

 

[Maggie Anne]

If it's on a trailer, (so one can disconnect bilge pumps), then turning off the battery switch and pulling 24/7 fuses will help a lot but I'm thinking 5 months would be too long.

 

[PanaSeaAhToo]

I also have heated storage. They allow connection to shore power during the day or anytime I am there working on the boat.
Assuming you have flooded lead acid batteries. Also, if left in the boat, disconnect the CO detector, if present. I have stored this long and made it to spring.
Be sure the battery plates are all covered with fluid.
Can you get in once or twice during storage to plug in during the day?
One other thought, you are at the end of reliable service of the batteries (6 years).
Best solution, remove the batteries and store them where you can charge them every 6 weeks, or use a trickle charger. Then load test them and reinstall in the spring.
I'm on the fifth year on mine and all load test at 95 to 100%. Will probably replace them in the spring or piece of mind. Will definitely replace the start battery.

 

[NorthernFocus]

Pull the batteries and take them home. I pull mine every winter and put them in the garage on a trickle charger.