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Re: Trickle chargers, batteryminders?

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George Marsh

02-20-2013 18:39:47

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A year ago Christmas, I purchased a batteryminder 12248. Cost over $100. Is it worth it? Hard to say. Will it bring back a battery from the dead? NO

I also recently purchased a battery conductivity tester, Midtronics Advanced Battery, Starter & Charging Tester, 300 series. It can measure the acutal cold cranking amps of the battery. Many times better than a load tester. After using the batteryminder, there isn't an increase in the cold cranking amps. The temperature of the battery has a greater influence on CCA.

SO, if the batteryminder desulfates the plates it has to be a very small amount and there is very little if any change in cca. Again, the temperature does change the cca more then batteryminder.

However, it is a good battery charger that doesn't over charge and cook the battery. Sometimes it takes weeks on a battery before it's done with the desulfating mode.

Because I spent a pant load on the batteryminder, it is always connected to a battery in the pole barn. I keep many batteries in the work bench, rotate it between tractors, mowers, mule, truck, car, trolling battery, and dump trailer.

I'm hoping the batteryminder will keep a healthy battery healthy longer. Only time will tell. I was expecting more for from batteryminder.

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Jon Hagen

02-20-2013 19:04:35

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 Re: Trickle chargers, batteryminders? in reply to George Marsh, 02-20-2013 18:39:47  
The batteryMINDer, atleast the little $40, 1.3 amp model will slowly desulfate a sulfated battery, although it can take months on a severly sulfated one. I had one in a rolled over Hough payloader I bought. Big 12V battery that laid upside down for several hours when the machine rolled and killed the operator.
All the electrolyte drained out while it laid upsidedown then the battery and machine laid in a salvage yard for a year, so the battery was sulfated almost beyond hope with the plates exposed to air for a year.

I bought the machine , refilled the battery with new electrolyte and put it on the desulfator. after a week it would put out enough to engage the starter and roll the engine about 1/2 turn. After a couple more weeks it would start the engine. After several months of use and desulfating it would crank much longer than the starter could safelt take. I would guess that battery regained 90% of new capacity.

bottom line, is that a charger with the desulfate feature will slowly remove the sulfation from a sulfated but otherwise healthy battery.
It in no way will magically restore a shorted or worn out battery.
I see the latest BatteryMINDer model now has temperature compensation so it better maintains full charge without overcharging in temps from -40 to +130.

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George Marsh

02-21-2013 09:22:59

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 Re: Trickle chargers, batteryminders? in reply to Jon Hagen, 02-20-2013 19:04:35  
A year ago, my GMC was 5 years old. The dealer told me my battery had a full charge but failed the load test. That's when I bought the batteryminder. It can charge gel, flooded and AGM batteries at 2,4 & 8 amp rate. My truck had the original Delco Agm. I bought a new battery for the truck and put the batteryminder on the old battery for 3 months. No change in battery's condition.

On other batteries, it may take weeks or a few days to run through the complete cycle, but when it's done, the charger goes in to a default, gel and 2 amp light flash.

I do have a mower battery made on 2008. It's rated at 340 cca. My battery conductive tester shows it's bad. Battery makes 240 cca. My batteryminder has spend a lot of time on this battery the past winter with no noticeable change in the cca.

However, you can buy a new cheapie mower battery rated at 200 cca. So I've learned to buy the bigger battery and even though it's shows bad, it can still out preform a new battery. I will install the 2008 battery in a mower that is close to home, so I can keep an eye on it.

My farmall, IH C, has a very old 12v battery, can't say just how old, but old. It has one cell that is weak, battery conductive testor shows battery is bad. However when you hit a 6v starter with a sick 12v battery, the starter flips the engine over like it's a healthy battery. Had I not used a hydrometer or the battery conductive testor, I would think the batteryminder was doing GREAT. I just moved the batteryminder to the IH C this morning.

The way I feel about the batteryminder it won't reverse the aging process of a battery, but hopefully it will slow down the aging process.

I have a very old 12v battery on the Jubilee too. Same as the IH C. An old wimpy 12v can move a 6v starter faster than a good 6v battery.

You slow down the aging process of a battery by keeping it fully charged even if you use a trickle charger. Just don't over charge it or you will damage it.

Just my $.02 worth.

I won't spend $100 on another batteryminder.

I like my battery conductive tester. It lets you know your battery is about to take a dump, so you can do something before you get stranded.


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John G. Hasler

02-20-2013 19:26:34

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 Re: Trickle chargers, batteryminders? in reply to Jon Hagen, 02-20-2013 19:04:35  
> I see the latest BatteryMINDer model now has > temperature compensation

Disappointing that they haven"t all always had it. That"s an essential feature: it isn"t much of a "minder" without it. It"s also trivial to implement.

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