C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Trickle Chargers?

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Old Jun 18, 2008 | 10:42 AM
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Default Trickle Chargers?

Need a little education/advice on these.

Not driving my LT4 as much as I used to...car sits for a week or more before driving again. Battery is strong and car starts every time but eventually I'm sure I'll head out there and she won't start - dead battery. Other than just startin' her up periodically and goin' for a short cruise, which may be all I need to do, I'm thinking that a trickle charger may be the best solution.

Not too familar w/ these... Pros? Cons? Where to buy? What brand? etc...

Thx in advance,
Jeff

Last edited by JEFNLSA; Jun 18, 2008 at 12:14 PM.
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Old Jun 18, 2008 | 12:44 PM
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Go to the local RV store and buy a solar battery tender. You hook it into your cigarette lighter and it charges the battery. The soft panels sit on the dash
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Old Jun 18, 2008 | 12:44 PM
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A battery tender is a better choice. Battery tenders continuously measure the battery voltage to determine state of charge and charge the battery with low current when the battery loses about 10% charge and then shut off. Trickle chargers charge the battery continuously with low current. Continuous charging will keep the battery up but continuous charging isn't required and the amount of current is determined by the company that made the charger.
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Old Jun 18, 2008 | 12:48 PM
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Originally Posted by jhammons01
Go to the local RV store and buy a solar battery tender. You hook it into your cigarette lighter and it charges the battery. The soft panels sit on the dash
The car is garaged so how will that work?
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Old Jun 18, 2008 | 12:51 PM
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Originally Posted by jfb
A battery tender is a better choice. Battery tenders continuously measure the battery voltage to determine state of charge and charge the battery with low current when the battery loses about 10% charge and then shut off. Trickle chargers charge the battery continuously with low current. Continuous charging will keep the battery up but continuous charging isn't required and the amount of current is determined by the company that made the charger.
Makes sense. A battery tender is what I'm after then.
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Old Jun 18, 2008 | 01:02 PM
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Default Battery Tenders

Hey Jeff,
My LT4 also takes long "naps" between drives. Within the last year, I purchased one of the CTEC chargers that were advertised here on the Forum. I am very pleased with the results and I would recommend the product. I "searched" the topic and the original ad is about half way down the page. Let me know if I can be of any further assistance.

Scott
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Old Jun 18, 2008 | 01:19 PM
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Originally Posted by JEFNLSA
Makes sense. A battery tender is what I'm after then.
Get a 'Battery Tender'-type of automatic charger, not a straight trickle charger - which can have their uses, but not, IMO, for long-periods of battery maintenance. Battery Tender is a Brand Name, I believe, but there are similar battery maintainers from other makers/outlets. Cheers!
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Old Jun 18, 2008 | 01:32 PM
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Originally Posted by SDF
Hey Jeff,
My LT4 also takes long "naps" between drives. Within the last year, I purchased one of the CTEC chargers that were advertised here on the Forum. I am very pleased with the results and I would recommend the product. I "searched" the topic and the original ad is about half way down the page. Let me know if I can be of any further assistance.

Scott
Thx Scott. Seems like a bit more than I need and looks like it needs to be wired in. Plus, it's pretty pricey compared to some of the others...
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Old Jun 18, 2008 | 01:34 PM
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Originally Posted by Can86Z51
Get a 'Battery Tender'-type of automatic charger, not a straight trickle charger - which can have their uses, but not, IMO, for long-periods of battery maintenance. Battery Tender is a Brand Name, I believe, but there are similar battery maintainers from other makers/outlets. Cheers!
Yeah, I'm leaning toward the "Battery Tender Plus". Around $50 and seems to be exactly what I need.
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Old Jun 18, 2008 | 02:02 PM
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Mine is a battery charger and Maintainer from Sears.

All you need is one that shuts itself off when the battery is fully charged
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Old Jun 18, 2008 | 02:12 PM
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This brings up a question.

Short version:

I recently had a battery replaced under warranty... How likely is it that my tender (or my typical use of it) contributed to its early demise?


Long version:

Upon buying a new battery a couple years ago, I got a tender as well to use during the winter (it doesn't seem required in the summer). Since there are some opportunities to drive the Vette in the winter, it wasn't constantly connected. I would use it when I knew roads would be bad for a while or if I noticed that it had been more than a few days since the last outing. Things were fine until a couple of months ago when the battery suddenly couldn't hold a charge and the tender couldn't keep up. As far as I know, the battery never had to be fully charged from a low voltage, but I guess it is possible.

Did I screw something up, or was the bad battery just bad luck?
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Old Jun 18, 2008 | 02:56 PM
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Originally Posted by jrp
This brings up a question.

Short version:

I recently had a battery replaced under warranty... How likely is it that my tender (or my typical use of it) contributed to its early demise?


Long version:

Upon buying a new battery a couple years ago, I got a tender as well to use during the winter (it doesn't seem required in the summer). Since there are some opportunities to drive the Vette in the winter, it wasn't constantly connected. I would use it when I knew roads would be bad for a while or if I noticed that it had been more than a few days since the last outing. Things were fine until a couple of months ago when the battery suddenly couldn't hold a charge and the tender couldn't keep up. As far as I know, the battery never had to be fully charged from a low voltage, but I guess it is possible.

Did I screw something up, or was the bad battery just bad luck?
My guess would be bad battery/luck, barring other relevant issues. These new 'maintenance free'-type batteries, even when relatively new, seem to be more fragile than older types. As far as I know, the Battery Tender brand is a good product?!
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Old Jun 18, 2008 | 03:44 PM
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Update:

Ordered the "Battery Tender Plus" from Summit.

Thx for the help gents.
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Old Jun 18, 2008 | 03:47 PM
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Originally Posted by JEFNLSA
Update:

Ordered the "Battery Tender Plus" from Summit.

Thx for the help gents.
This thread cost me $50 too! I just bought one off fleabay after reading this.
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Old Jun 18, 2008 | 03:49 PM
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Originally Posted by biggrizzly
This thread cost me $50 too! I just bought one off fleabay after reading this.
Glad I could help.
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Old Jun 18, 2008 | 04:35 PM
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Originally Posted by JEFNLSA
Update:

Ordered the "Battery Tender Plus" from Summit.

Thx for the help gents.
That is the right decision. Mine works just great and even brought a 7 year old battery back to life.
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Old Jun 18, 2008 | 04:44 PM
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Originally Posted by pmihaltian
That is the right decision. Mine works just great and even brought a 7 year old battery back to life.
Good to hear.
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Old Jun 18, 2008 | 08:39 PM
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Originally Posted by pmihaltian
That is the right decision. Mine works just great and even brought a 7 year old battery back to life.
Lead acid batteries sitting discharged for long periods have a lot of lead sulphate on their plates that essentially makes the amp-hour capacity much lower due to the plates being covered (lead sulphate is an insulator). Lead sulphate normally forms during discharge and it is soft. If you charge the battery shortly after discharging, the lead sulphate converts to lead and sulfuric acid. Sitting long periods (4+ wks), the lead sulphate becomes hard and will not convert upon charging and you then have a motorcycle sized battery.
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Old Jun 18, 2008 | 08:57 PM
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This will be the best $50 you will ever spend for your Vette! After many years of charging batteries I bought a "tender" several months ago. Could not understand why I waited so long.

Joel
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Old Jun 18, 2008 | 09:22 PM
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Originally Posted by jhammons01
Go to the local RV store and buy a solar battery tender. You hook it into your cigarette lighter and it charges the battery. The soft panels sit on the dash
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