Battery Tender?
Melting Slicks
Joined: Aug 2005
Posts: 2,683
Likes: 34
From: Working on the car NY
It's really not a "charger" but a "maintainer. I have 4 connected to (various) vehicles and 2 on motorcycles. Never a problem and everything now starts no matter how long it sits. You don't remove the caps.
Drifting
Joined: May 2002
Posts: 1,546
Likes: 282
From: Back in Nebraska
I agree with TWINRAY. Before I bought a Battery Tender "Junior" my battery always seemed weak. The minute that I pull the Vette into the garage I hook it up and walk away. Fast and reliable starts ever since. Well worth the money!!!
Le Mans Master
Joined: Mar 2001
Posts: 6,640
Likes: 287
From: Ann Arbor Michigan
I have an 88' Chevy PU that I use maybe 4 times a year. I've had the battery tender hooked up to it 24/7 for the past 5 years. No issues. Also use them on the Vettes and the kids boat battery during the winter.
Gary
Gary
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Racer
Joined: Mar 2008
Posts: 428
Likes: 0
Drifting
Joined: Sep 2006
Posts: 1,986
Likes: 21
From: Columbus MN
I use automatic tenders on my Corvette, my Polaris ATP, riding lawnmower, and our son's '63 Nova wagon during the off-season. The automatic type charges only when necessary rather than a contant low amperage charge. I recommend you spend the (very) few extra dollars and get the automatic type. They are available from lots of sources. 
Pro
Joined: Oct 2002
Posts: 733
Likes: 15
From: Clarksburg NJ
I have two of the small, waterproof type, and one of the original ones. I use one on the 'Vette, and I made a stand to store the RV and tractor batteries over the winter. They work great. The main thing to keep in mind with batteries, is once you let them discharge AND freeze, it is a paperweight. You won't be bringing it back from the dead. 
Racer
Joined: Feb 2008
Posts: 497
Likes: 0
From: Streator Illinois
I have a Deltran Tender Jr and a couple of cheap generics. The cheap ones only have a one color indicator light to tell you it's hooked up. They do not have a red (charging) and green (fully charged) light like the actual Battery Tender.
Last year I had a battery fail after using one of the cheap units on it for the winter. It was a 7 year Exide battery that lasted only 2 years. Coincidence? Maybe and maybe not. From now on, I'll stick with the name brand battery maintainers. I prefer to know the more exact condition of the charging sequence as shown by the Deltran.
Terry
Last year I had a battery fail after using one of the cheap units on it for the winter. It was a 7 year Exide battery that lasted only 2 years. Coincidence? Maybe and maybe not. From now on, I'll stick with the name brand battery maintainers. I prefer to know the more exact condition of the charging sequence as shown by the Deltran.
Terry
Racer
Joined: Jan 2006
Posts: 323
Likes: 4
From: McKinney Texas
I have a Battery Tender brand and a couple of generic type chargers from Walmart. The $19 ones from Walmart work just as well, and have an indicator light to let you know if it is charging, fully charged, or not hooked up. All work great.