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Unread 04-01-2015, 12:05 PM   #31
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Default Re: Old batteries with desulfator

I just received my Save A Battery unit today. I used the $3.65 shipping and still received it in three days. That is fantastic service. I will probably go install it this weekend.
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Unread 04-01-2015, 12:08 PM   #32
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Default Re: Old batteries with desulfator

Quote:
Originally Posted by UncleJerm76 View Post
After running my own test after test on two different carts (one with a 5 year old set of cheap Powertrons and one with a 2 year old set of expensive Trojans) I swear by the desulfators!

As already mentioned there are ALLOT of posts already on here. Just run some searches, sit back with a cup of Joe and read away.
Yeah but when I did that I was here for hours reading up on this stuff and chasing other "rabbit trails". This stuff is addictive.
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Unread 04-01-2015, 04:35 PM   #33
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Default Re: Old batteries with desulfator

I've been using a Save A Battery for about 18 months. I use my regular charger daily but if I am not going to use the cart for a few days, I connect the Save A Battery after a full charge. As I said in an earlier post, my experience is anecdotal but I am quite satisfied with mine. I feel it has lengthened the life of my batteries.
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Unread 04-02-2015, 01:09 PM   #34
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Default Re: Old batteries with desulfator

So, I hooked the save a battery maintainer up to my golf cart, using the alligator clips (for lack of a better description). It had been a couple of days since I had used/charged the cart. Everything went as described and the maintainer finished charging the battery pack in a couple of hours. There was a steady yellow light, indicating that it was finished charging and in the maintenance mode. I left it connected until today. I needed to make a trip down to the Ace hardware store for some weed killer. The analog battery meter showed the charge in the top red area, which the regular charger doesn't ever reach other than when it is at it's surge charge mode. I guess I drove the cart about six miles round trip and when I got back, the meter showed where it would normally show the day after I had finished using the regular charger(middle to high white area). These Trojan batteries are about a year old and have been well maintained. I always connect the charger after using the cart, even if I only go a short distance. It appears as if the maintainer tops the regular charge off a bit, adding a few volts. Of course, I did NOT disconnect it and let it sit over night as I do usually with the regular cart charger.

Now that I know what to expect with my fairly new batteries, I want to see what I can do with my wife's OLD batteries. Right now, I have a cheapo battery desulfator hooked up to her battery pack. I am curious as to what the maintainer will do with her's IF I can get her to leave the cart long enough for me to experiment. I might have to wait until she goes up North again this summer to visit relatives. She uses her cart every day and drives the crap out of it before returning home. I'd have to say she drives a minimum of ten miles per day, going to the pool in the mornings, running to the grocery store afterwards, and going to someone's house or the rec center to play cards or mahjong. She's never had to call me for a tow.

I have an old Series CC DS and she has a Yamaha with regen, and VERY slow.

I am curious as to how much longevity one can get from a battery pack. I have heard folks say that the average is about five years. I would like to hear from some that have exceeded that. Maybe that would have to be a new thread?
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Unread 04-02-2015, 01:17 PM   #35
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Default Re: Old batteries with desulfator

By the way, I have been talking to a few snow birds and found that the ones that hook up some sort of battery tender/maintainer while they are gone during the summer months, seem to have the best results in maintaining the life of their cart batteries.

For $75.92 plus shipping, I figure that I got a great deal for my maintainer. Depending, of course on whether it lasts and continues to function properly. I have heard of folks paying upwards of three hundred bucks for maintainers for their carts.
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Unread 04-02-2015, 02:12 PM   #36
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Default Re: Old batteries with desulfator

Well my concern is just that. You usually get what you pay for. But if it lasts a couple of years I will be happy.
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Unread 04-03-2015, 11:27 AM   #37
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Default Re: Old batteries with desulfator

Quote:
Originally Posted by passthru View Post
Yeah but when I did that I was here for hours reading up on this stuff and chasing other "rabbit trails". This stuff is addictive.
Because I can relate VERY well to these rabbit trails you speak of Ill elaborate a little of some of the same stuff already said in other posts.

There are a bunch of different Brands of desulfators, you are basically paying for the features you get. However the exact method of "Desulfating" is patented so each company does it a little differently to not infringe on the other. I have not yet seen any tests done to distinguish which company has developed the best algorithm - all the Major brands seem to work well. One of them, BatteryMINDER (of which I'm a huge fan), makes several different different models with different features. Three of them are listed below...

Model OBD-48 is an on-board desulfator (not a maintainer) that only desulfates while the cart is being charged by another source. It does this by detecting if the voltage is above a certain level, if it is then it kicks on. As soon as it drops below that preset level - it kicks back off. This is convenient if you travel around a lot, campsites, hunting camps, friends house since you don't need to carry a separate unit around to desulfate because its already mounted in the cart with nothing to plug in. This is also the perfect unit if your big charger already has its own maintenance mode to keep the batteries topped off.
Pros:
  • On-Board mounting, out of the way, no AC plugs to plug in
  • Hook it up once and never touch it again
  • Automatically turns on/off
Cons:
  • No built-in maintainer


Model 48021 has the desulfator and adds a built-in 2A maintainer keeping the battery pack topped off at the ideal level - yet is small enough to mount on-board if you would like to (you still need an A/C power source). It also allows you to hook up your big charger and this one at the same time after a long ride so you can forget about it. The big charger will shut itself off as it normally does when the batteries are charged, and this one will automatically pick up and keep it maintained and desulfating. Its smarter than some other maintainer/desulfater units since it is long-term storage friendly - meaning that if the AC power goes out, the unit will shut itself off preventing any current drain on the DC batteries. When the AC power comes back on it will turn itself back on and continue. Although this seems logical and you might think they would all do that, but you would be surprised. Because desulfators are hooked up to batteries, when the AC power goes out it typically back-feeds into the desulfator and is actually powering it, draining your batteries at the same time. It comes with a bunch of safety features, overcharge protection, temperature compensation, etc, etc. The low 2A maintenance mode means that you do not need to worry about additional water evaporation beyond what you normally see. And after several months of desulfating you should notice less water loss than prior to using the unit.
Pros:
  • Small enough to mount on-board
  • Approved for unattended long-term storage
  • Can plug it in at the same time as the big charger
  • One-plug convenience
  • Wont use more water than usual
Cons:
  • Can not maintain batteries individually

Model 12106A-8V is also a 1.33A maintainer/desulfator but is designed for 8v use (These are made in 6v, 8v, 12v models). This is my personal favorite and although its a more expensive option due to purchasing six of them (one for each 8v battery in your 48v pack), I consider it the absolutely best care your batteries can get. It is also a little more inconvenient to plug in each battery rather than one plug for the whole pack, but it has benefits especially on old battery packs. Each battery is taken care of completely independent of the others. So if one battery is dying because it is being undercharged/overcharged in the pack, this unit will read the voltage and change the charge accordingly. However this unit does not provide an auto-off function if the AC power should cut out so it is not a good option to mount on-board. It will however come back on automatically once AC power is restored. Also comes with a bunch of safety features, overcharge protection, temperature compensation, etc etc. Also there are weatherproof automotive-style plugs available with 12pins that could be used to wire in an easy one-plug solution.
Pros:
  • Can maintain each battery individually, meaning it gets exactly what it needs. no more, no less
  • Over time can correct a single or multiple batteries going bad in the pack to prevent further damage
Cons:
  • Multiple units means its the most expensive
  • If you don't make your own single-plug solution, it is inconvenient to hook all 6 batteries up seperately
  • Not recommended for unattended long-term storage (Does not shut itself off in the event AC power is lost)



...Hopefully all that crap I wrote will help someone in some way!
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Unread 04-16-2015, 12:40 PM   #38
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Default Re: Old batteries with desulfator

It's been a few weeks since I hooked up the cheapo battery desulfator that I bought on-line, to my wife's old golf cart batteries. I haven't used a GPS or meter on the cart yet, but my wife swears that it runs faster. I tried it out and maybe she has me thinking the same thing. It does seem faster and the batteries do seem to be holding their charge pretty well. She uses hers almost every day, where I have been slacking off on mine lately. I have not installed the desulfator on mine yet. My batteries are less than a year old.

But, I have been using the Save-a-Battery maintainer to charge my batteries. It takes a very long time, about 24 hours to complete the charge after I use the cart, but the analogue volt meter on the dash shows the charge is all the way up in the red zone. I used the cart today and I am sure that I broke some speed limits. It was REALLY moving down the street. And when I returned home, the meter was still in the white zone. Not much lower than where it would be with a full charge from the golf cart charger, after sitting over night. This is proving what someone else said on here, that the maintainer charges the pack higher than the regular charger. I still plan to install the desulfator eventually. But, I understand that the Save-a-Battery maintainer also has a desulfator function. I am pretty interested in seeing just how much improvement I get from using it. Of course, my wife will be leaving town in June to visit family and I will have to leave the maintainer on her cart while she is gone.

One thing to note about the maintainer: In my opinion, you are safe leaving your cart hooked up to it for months, without worrying too much about your batteries going dry. The golf cart charger causes my battery water level to go down every time I charge the pack. I don't see the same thing happening with the maintainer. It probably loses water at a much slower rate due to the slower and lower charge rate. I have left my motorcycle hooked up to the BatteryTender all winter, in cold climates and never had a problem with the water level. I believe the Save-a-Battery works on the same concept.
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Unread 04-16-2015, 02:54 PM   #39
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Default Re: Old batteries with desulfator

The desulfator and maintainter do not charge the same way. The desulfator applies short high current pulses to the batteries to aid in the defulfation process. The maintainer just applies a low current to keep the batteries fully charged.
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Unread 04-16-2015, 04:25 PM   #40
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Default Re: Old batteries with desulfator

Well, not quite (if one believes Battery Minder's ads) - they say:

Quote:
Maintenance + Desulfation* - holds battery at 100% charge while continuing to desulfate. Remains in this mode indefinitely until user changes setting or places battery back in use.
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