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Problems with Battery Tender Hookup

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Old Apr 7, 2009 | 03:07 PM
  #1  
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Default Problems with Battery Tender Hookup

I have been using a battery maintainer type device for the last several years with no problems. However, the car has always been kept in the garage during this time. I have to store the car outside for the next few months while I work on my garage makeover. So, I purchased a waterproof (1.25 amp) battery tender. To test it out, I attached the red alligator clip to the positive post, and attached the black alligator clip to a nut that was attached to the body wall (rather than to the engine block) and plugged in the unit. I got a rapidy blinking amber light on the battery tender.

I contacted Deltran (the manufacturer). They told me the instructions are incorrect for the waterproof model and that I should attach the the black alligator clip directly to the negative terminal, (rather than to a ground).

Why should that make a difference? Maybe a didn't have it properly grounded?

Thanks,
Mordi
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Old Apr 7, 2009 | 04:27 PM
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Maybe where you attached it isn't a good ground?

I'd feel confident following the manufacturers advice in any event. And I didn't realize they had a water proof version of the BATTERY TENDER PLUS.

I've been using the same (DELTRAN) BATTERY TENDER PLUS float charger in my various cars since '95. It hasn't failed me yet. I use the short quick disconnect lead with the ring terminals at the battery terminals, leave the hood closed and run the leads down through the engine compartment.
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Old Apr 7, 2009 | 06:37 PM
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Originally Posted by hotwheels57
Maybe where you attached it isn't a good ground?

I'd feel confident following the manufacturers advice in any event. And I didn't realize they had a water proof version of the BATTERY TENDER PLUS.

I've been using the same (DELTRAN) BATTERY TENDER PLUS float charger in my various cars since '95. It hasn't failed me yet. I use the short quick disconnect lead with the ring terminals at the battery terminals, leave the hood closed and run the leads down through the engine compartment.
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Old Apr 7, 2009 | 10:16 PM
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I'd agree that maybe the attachment point you used was not a good ground. Do what the manufacturer says and hook it directly to the battery. That's how I attached mine and it always worked.
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Old Apr 8, 2009 | 12:06 PM
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Well, I switched the attachement points and hooked the alligator clips directly to the battery posts. When I plugged it in, I got a solid amber light and then shortly thereafter, a solid green light.

I guess I am back in business

I just wonder how many more years I can get from this 01 AGM battery

Thanks for all the help

Mordi
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Old Apr 8, 2009 | 10:39 PM
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I am thinking simply high resistance for a low amp charger.
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