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Unread 11-27-2014, 12:53 PM   #31
Gone Wild
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Default Re: 48-Volt Battery Maintainer

Because most Club Cars use an on board "OBC" to manage charging thru the socket, we can't just put an identical plug on the charger wire. The maintainer (I have the same one as you) must be wired separately/directly to the battery pack.
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Unread 11-27-2014, 12:56 PM   #32
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Default Re: 48-Volt Battery Maintainer

Wow...!!! If you can wait, that JB Tools is a very good price, however, website indicates they are out of stock and have a 2 week lead time. I wanted mine quick and called Save-a-battery in CA and ordered directly. It's to be shipped (free ground shipping) on Monday. I think the price was $99.95...
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Unread 11-27-2014, 01:16 PM   #33
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Default Re: 48-Volt Battery Maintainer

I don't know if a low cost charger will really do the job on deep cycle batteries will it? I'm no expert by any means, but here is what I do understand from reading information from this site:http://www.batterystuff.com/kb/artic...ry-basics.html

9.Battery Tender Plus Battery Charging - Remember you must put back the energy you use immediately. If you don't the battery sulfates and that affects performance and longevity. The alternator is a battery charger. It works well if the battery is not deeply discharged. The alternator tends to overcharge batteries that are very low and the overcharge can damage batteries. In fact an engine starting battery on average has only about 10 deep cycles available when recharged by an alternator. Batteries like to be charged in a certain way, especially when they have been deeply discharged. This type of charging is called 3 step regulated charging. Please note that only special SMART BATTERY CHARGERS using computer technology can perform 3 step charging techniques. You don't find these types of chargers in parts stores and Wal-Marts. The first step is bulk charging where up to 80% of the battery energy capacity is replaced by the charger at the maximum voltage and current amp rating of the charger. When the battery voltage reaches 14.4 volts this begins the absorption charge step. This is where the voltage is held at a constant 14.4 volts and the current (amps) declines until the battery is 98% charged. Next comes the Float Step. This is a regulated voltage of not more than 13.4 volts and usually less than 1 amp of current. This in time will bring the battery to 100% charged or close to it. The float charge will not boil or heat batteries but will maintain the batteries at 100% readiness and prevent cycling during long term inactivity. Some Gel Cell and AGM batteries may require special settings or chargers.
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Unread 11-27-2014, 01:32 PM   #34
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Default Re: 48-Volt Battery Maintainer

Defending how, why or whether they work is certainly beyond my pay grade. We're just going by our real-life experiences. The reason most of us chose these; is that they are perfect for long term storage. Using them somewhat exclusively is just a happy accident.

The phrase "especially when they have been deeply discharged" from your cut/paste diatribe, may be the key here - 'cause we are not supposed to do that to our batteries anyway - and when we do, we use the BIG chargers.
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Unread 11-27-2014, 02:13 PM   #35
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Default Re: 48-Volt Battery Maintainer

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Originally Posted by Olman View Post
Don't know why you couldn't click the link. Works for me. This is actually where I bought mine. Hope the admin folks don't mind me posting the link.

http://jbtoolsales.com/save-a-batter...ainer-48v-50w/

Yes you just plug it into the wall. I mounted mine permanently under the seat and used a marine charger plug mounted into the inspection cover so I could just plug an extension cord into it. Understand this charger is small and not intended to replace your large charger. It is much slower. I use mine almost exclusively however unless I am using my cart a lot back to back. When I am not on my cart, the small charger is plugged in. Hope that helps.

the link isn't thourgh enough to see what the charger is all about. Web site ,as i think you know! TELLS ALL !!--you need--- before you order somthing.Had no problem olman .no problem attall bob
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Unread 11-27-2014, 02:34 PM   #36
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Default Re: 48-Volt Battery Maintainer

I have 4 12 volt gel cell batts alpha premium gxl 195 /in my club car, i use a club car charger each/everytime i pull her in the garage. This is keeping the batts up quite well, week or so if not used very much. I can't afford battery chargers setting all over my garage. 8 of them now 3 battery tenders for my lead acid 12 volt batts. These hi dollar gel batteries aresending this cart outa my garage in a hurry . that can one use that don't cost $400.00 If this $99.00 gel charger will work i will buy another battery charger. Am i hurting these hi-dollar premium batteries doing this ??????????????? bob s
I have a charger for these batts .........but its 36 volt. will it work on 4 batteries bob
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Unread 11-27-2014, 08:03 PM   #37
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Default Re: 48-Volt Battery Maintainer

Quote:
Originally Posted by DaveTM View Post
I don't know if a low cost charger will really do the job on deep cycle batteries will it? I'm no expert by any means, but here is what I do understand from reading information from this site:http://www.batterystuff.com/kb/artic...ry-basics.html

9.Battery Tender Plus Battery Charging - Remember you must put back the energy you use immediately. If you don't the battery sulfates and that affects performance and longevity. The alternator is a battery charger. It works well if the battery is not deeply discharged. The alternator tends to overcharge batteries that are very low and the overcharge can damage batteries. In fact an engine starting battery on average has only about 10 deep cycles available when recharged by an alternator. Batteries like to be charged in a certain way, especially when they have been deeply discharged. This type of charging is called 3 step regulated charging. Please note that only special SMART BATTERY CHARGERS using computer technology can perform 3 step charging techniques. You don't find these types of chargers in parts stores and Wal-Marts. The first step is bulk charging where up to 80% of the battery energy capacity is replaced by the charger at the maximum voltage and current amp rating of the charger. When the battery voltage reaches 14.4 volts this begins the absorption charge step. This is where the voltage is held at a constant 14.4 volts and the current (amps) declines until the battery is 98% charged. Next comes the Float Step. This is a regulated voltage of not more than 13.4 volts and usually less than 1 amp of current. This in time will bring the battery to 100% charged or close to it. The float charge will not boil or heat batteries but will maintain the batteries at 100% readiness and prevent cycling during long term inactivity. Some Gel Cell and AGM batteries may require special settings or chargers.
Dave---reread post 16. The charger I use (48 volt Save-A-Battery), will charge my golf cart batteries quite well just not as fast as your "big" charger. While my cart is on the charger and the batteries are at full charge, it keeps the pack at 54.5 volts in the maintenance mode. From time to time the charger sends pulse charges into the pack to help desulfate them.

Bsa-Bob----If I am understanding your post, you are asking if the Save-A-Battery is ok to use on your "high dollar gel batteries". If so, the engineers and literature says it is fine for gel cells. DON'T use a 36 volt charger on a 48 volt pack. You might find more info on the charger at GraniteDigital.com. That company makes the charger. You can go to the site, get their phone number, and be able to talk to their techs. Good people and they will answer all of your questions. They did for me.
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Unread 11-27-2014, 08:39 PM   #38
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Default Re: 48-Volt Battery Maintainer

Quote:
Originally Posted by Olman View Post
Dave---reread post 16. The charger I use (48 volt Save-A-Battery), will charge my golf cart batteries quite well just not as fast as your "big" charger. While my cart is on the charger and the batteries are at full charge, it keeps the pack at 54.5 volts in the maintenance mode. From time to time the charger sends pulse charges into the pack to help desulfate them.
Thanks Olman. I was surmising from what I read on that battery site that the larger, more costly units give the battery packs an initial forceful charge that bring the batt's up to a certain % of charge, then these units decrease the charge so the batt pack does not overheat, and also does this on the last 1% of the charge.

So, as I read your post #16 and then re-read the web site I referred to, I think that it's not the time it takes for the Batt's to charge (via the charger amp rating...the higher the amps, the faster the charge) it's more a matter that they get hooked up to a charger as soon as your done, ...don't let the pack get too low on a charge, and don't let the water level drop.

As far as the "diatribe" comment goes, I was simply making a statement from what I've read. Meh.

Thanks for the clarification on this. I have a little better understanding of this.

Dave
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Unread 11-27-2014, 08:47 PM   #39
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Default Re: 48-Volt Battery Maintainer

Quote:
Originally Posted by DaveTM View Post
Thanks Olman. I was surmising from what I read on that battery site that the larger, more costly units give the battery packs an initial forceful charge that bring the batt's up to a certain % of charge, then these units decrease the charge so the batt pack does not overheat, and also does this on the last 1% of the charge.

So, as I read your post #16 and then re-read the web site I referred to, I think that it's not the time it takes for the Batt's to charge (via the charger amp rating...the higher the amps, the faster the charge) it's more a matter that they get hooked up to a charger as soon as your done, ...don't let the pack get too low on a charge, and don't let the water level drop.

As far as the "diatribe" comment goes, I was simply making a statement from what I've read. Meh.

Thanks for the clarification on this. I have a little better understanding of this.

Dave
I think they are referring to deep cycle as in marine batteries, not golf cart batteries. They don't charge up at the same rates. Also once the batteries are charged with the cart charger, the maintainer actually finished the charge and keeps it there. The golf cart charger will come on in two weeks to top of the baits but this is where the maintainer will actually increase the battery life. I do the initial charge with the cart charger then let the maintainer computer do the rest
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Unread 11-27-2014, 09:30 PM   #40
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Default Re: 48-Volt Battery Maintainer

That article used "Walmart" to describe alternative chargers, so by definition the word diatribe simply came to mind. Many well educated battery experts criticize the concept of any pulse process "fixing" sulfation after-the-fact. Honestly I suspect they are right. A damaged battery is probably just that. But most (if not all of these maintainers) seem to think their particular pulse feature is a big deal. Not sure why, really. I do like the temperature compensation built into mine - that is a well understood concept and is a big deal to me because I store mine in cold temps.

The battery minder I use is priced at 75% of the cost of a Big/Smart charger, so its not really designed to be a cheap alternative - just an alternative.

The topic of battery maintainers seems to arrive on this site at almost exactly this time of year. A pretty lengthy link about these devices was started by me HERE about a year ago. There have been frequent updates and info from other users in and among other threads also.
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