Good Sam Club Open Roads Forum: Tech Issues: Trojan T-105 Storage
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MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 07/18/19 12:27am Link  |  Quote  |  Print  |  Notify Moderator

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

Dave H M

IL

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Posted: 07/18/19 06:24am Link  |  Quote  |  Print  |  Notify Moderator

Look them up on ebay or amazon. Deltran battery tenders are my pick of the litter.

road-runner

Oregon

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Posted: 07/18/19 09:59am Link  |  Quote  |  Print  |  Notify Moderator

With the RV stored inside and kept above freezing, I remove all parasitic loads and charge the T105s for a few hours every month or two over winter. I'm not making a claim that this is good, just reporting that they're 10 years old and still working.


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MEXICOWANDERER

las peñas, michoacan, mexico

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Posted: 07/18/19 11:33am Link  |  Quote  |  Print  |  Notify Moderator

I wouldn't hesitate to store a battery at -20F if the origin of the power to operate the maintainer is high guarantee of operation like no brown or blackouts in several years.

Cold electrolyte can get to the point where it will allow a mere ten percent of the activity as compared to the same battery at 20c.

Many folks believe that in polar regions they keep engines running because cold oil would freeze an engine dead. Frigid oil will not lubricate but IT'S THE TEN TIMES THE BATTERY NEEDED THAT TURNS 500 CCA into 50 CCA THAT'S THE CORKER.

They have lube that will flow at -70F now. Synthetic at around fifty dollars a quart. But the battery issue is a challenge as well as the weakening of tensile strength of metals when temperatures get ridiculously frigid. Titanium anyone $$$$$$$$$$$$ ???

I did a CCA check on fully charged NEW Caterpillar 8-D batteries when it was -39F at Bridgeport around 40 years ago. The CCA was less than 300 amperes each.

Well that's winter. But to prolong life in a battery year-round colder rather than warmer temperatures is a major player. The batteries in my Rolls bank rejoiced in tropical 1.260 blend electrolyte and had .300" plate thickness to sacrifice. Year-round ave temp of near 80F. Extreme cold will aid a battery to stratify the acid faster than a warm battery. But the same cold temperature will reduce plate erosion by 50% or more. No free lunches.

The zinger with cold temps is the possibility of losing the grid and having the bank sit for four months. But weather like that happens above the arctic circle. When batteries had a destination of Pt Barrow. or the south Pole they had 1.300 polar blend electrolyte.
there is always loss at extreme temperatures. And the reduction differential between say 0F and -30F is not worth it realistically in battery life gains so battery maintenance chargers do not encourage age degradation and actually help stir electrolyte or more correctly slows down thermal stratification under extreme thermal conditions.

I've seen stored batteries that have gone a few years at polar conditions. The top inch or so lost density and froze solid and destroyed the battery,

But hauling the batteries from the rig to a cozy place on the hearth isn't doing them any favors.

Simple isolation from any possibility of accidental discharging, and a battery maintenance charger that has temperature compensation seems to be the smartest choice.

down home

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Posted: 07/18/19 03:21pm Link  |  Quote  |  Print  |  Notify Moderator

We keep ours plugged in and float charge controlled by power management system.
For over ten years we have had it stored at full service indoor storage. This fall it will be in enclosed but no services so we will have to travel and check batteries and other things ourselves every two weeks. So long as they are charged full and batteries are full they should not freeze. Those things weigh about 75 lb?? each I think and have to get down on the floor to take them out. not going to try to do that.

opnspaces

San Diego Ca

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Posted: 07/19/19 08:12pm Link  |  Quote  |  Print  |  Notify Moderator

Be careful ordering this model from Amazon. I did a search for the model number 12117TC and I found what looked like the same minder for the same price. But in reality it was 12117 not 12117TC and therefore no temperature compensation. I could only find the 12117TC for sale on the Northern Tool website. In fact when I went to the manufacturers website Batteryminders.com the model is not on the website for purchase. But when I typed 12117TC into the search box it shows up as exclusive for Northern Tools.





1996 Suburban 4x4. 350, 4.10 3/4 ton
2005 Jayco Jay Flight 27BH
1986 Coleman Columbia Popup.

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