Appropriate battery charger

[FionaGrant]

I just got my two 6v deep cycle batteries back from my battery guy and he says they're fine and should last a good while longer.

But I am stumped as to what kind of charger/maintainer I should buy.

We have the batteries at home in a cool storage area and won't put them back on the trailer until April.

My battery guy suggested this beast (https://www.samlexamerica.com/produc...ail.aspx?pid=6) for $220 Canadian. He says I need at least 15 amps.

But it seems to me that I won't have much reason to re-charge, just maintain.

I bought this (https://no.co/genius2) before I asked my battery guy, but judging by what he said, it is woefully inadequate and maybe I should return it.

Even maintaining is a problem as we're in a condo so can only pull them out to hook up the charger once and a while without having them in a spot where they could be stolen.

Any ideas?

Grant and Fiona

[FionaGrant]

Also looking at this: https://www.amazon.ca/gp/product/B07...K6Y9EEQB&psc=1

[RogerR]

Can you run a drop cord to the battery location? If so, and there is ventilation you just leave it plugged in until spring. I would check monthly for water level. Batteries emit some hydrogen gas which is explosive. As long as they are in an open space and not a tiny closet or something you should be fine.

Mine is in the basement, a 24 x 24 room, and the tiny amount of hydrogen gas will never build up.

[CAG]

I used a simple BatteryTender on my dual 6 volts for years and had no issues. They were always at full charge and ready to go when I was ready to pull out.

[Jagiven]

That charger looks fine.

I only place my maintainer on my batteries about twice each winter. For about 24 hours at a time. I check my voltages before I place the maintainer on, usually they still read fully charged. I know last spring I was loosing both of my 9 year old batteries, as they were dropping 0.1 to 0.2 volts over a few months.

[FionaGrant]

Originally Posted by Jagiven

That charger looks fine.

I only place my maintainer on my batteries about twice each winter. For about 24 hours at a time. I check my voltages before I place the maintainer on, usually they still read fully charged. I know last spring I was loosing both of my 9 year old batteries, as they were dropping 0.1 to 0.2 volts over a few months.

Which? The heavy duty $220 one, or the 2 amp one?

[Jagiven]

Originally Posted by FionaGrant

Which? The heavy duty $220 one, or the 2 amp one?

Sorry, the small 2 amp unit. It will be slower when you need to charge a depleted battery.

[KilbrideTP]

I use 2 Noco 1amp chargers set to 6v. 1 on each battery. No issues whatsoever

[Lake Huron]

I've got a 12v AGM group 31 battery that just completed its 5th season and a pair of Interstate 6v's that power my residential fridge only and they completed 4th season. I pull them in the fall and put them in my basement. I charge the 12v on an auto trickle charge which will take about a day. I have the 6v's connected in series and itll take a good 2-3 days on a trickle charge. Once they are fully charged, I wont hit them again until spring, 5 months later. A trickle charge then is fairly quick for all of them. They sit on a piece of wood instead of on the cold concrete basement floor too.