Trojan T-105 Storage

If they're under warranty, consult the manufacturer for best long term storage options.
Get a name, and/or record what's said, preferably in writing (by email).

Storage temperature and frequency you’ll be able to check them and charge as required are important. I’d be reluctant to let them go more than 30 days without charging if they are stored where it is warm.

A Trojan ain't no different than any other L/A battree, despite what battery knowitalls would have you believe, Keep it fully charged, and it will last forever. And I myself would like a continuous float charge of 13.2 in warm weather

I take mine out of the RV and place them in a garage that stays above freezing; around 40 or 50 degrees. I then check the electrolyte for specific gravity and trickle charge to at least 1.27 and then disconnect from the charger and place a digital voltage gauge on it. (draws no power until the button for display is pressed) I check it for 12.6 volts and specific gravity maybe once or twice during the down time. I've never seen the voltage change from 12.6 or the specific gravity drop below 1.265.
I suppose it's overkill as just charging them and leaving for 3 months wouldn't have changed anything.

You live in a perfect environment for battery storage.

The best way to store it is to switch it off circuit so there is zero chance of a fault draining the battery. Absolutely 0% chance of accident.

A battery maintainer that compensates for temperature is another must. This will reduce stratification to near zero. A maintainer with a potential of >1.0 amps would be my choice. The maintainer stays connected 24/7,

MEXICOWANDERER wrote:
You live in a perfect environment for battery storage.

The best way to store it is to switch it off circuit so there is zero chance of a fault draining the battery. Absolutely 0% chance of accident.

A battery maintainer that compensates for temperature is another must. This will reduce stratification to near zero. A maintainer with a potential of >1.0 amps would be my choice. The maintainer stays connected 24/7,

Mex, Do have a particular one in mind?

Hmmmm, maybe I should just run some volts into my solar charge controller and let it do the maintaining. It has temp compensation. My solar panels are all in the shade when in storage but I could use a power supply to feed the charge controller as long as the controller doesn't try to fully recharge the batteries every day.

Battery Minder on sale at Northern Tools


I have several of these BatteryMinders - I use them on my lawnmower and the chassis battery on my MH. I have 4 vehicles - I tow one and leave the others at home over the winter. I remove their batteries and connect them to BatteryMinders so their well charged when I get home. Never had to add water to them. This sale price is very good right now.

The reason that they are so reasonably priced is they have to manage mere trickle amounts of current. They are genuine battery life extenders.

The reason that they are so reasonably priced is they have to manage mere trickle amounts of current. They are genuine battery life extenders.