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I just got my first battery tender and have a question about the ground lead. I have had battery chargers before and have always connected pos to pos and neg to neg on the battery with the battery installed on the car. The instructions say hook up ground lead to a good ground and don't mention the ground post of the battery. Since it is a 1980 the battery is of course behind the seat. Can't I just hook it up to the negative post of battery? Thanks for any help.
Yes by all means you can use the negative battery post.
I have an Optima that has the dual post setup. My top posts are for the harness and main 12V and ground cables. I have my stereo and battery tender on the side posts below.
When I put the car away for the winter I disconnect the main cables which detaches the battery from the car. The only thing left connected is the stereo which has a memory and a clock.
They both create just enough of a draw to keep the tender coming on from time to time to keep it tended over the winter and perfectly healthy.
I have an 88' Chevy Pickup (bought new) that I use 2 or 3 times a year (maybe 50 miles). I have had one of these $15 Battery Butlers hooked up to it for almost 4 years continuously and it always starts right up. Use them on the Vettes too.
Yes by all means you can use the negative battery post.
I have an Optima that has the dual post setup. My top posts are for the harness and main 12V and ground cables. I have my stereo and battery tender on the side posts below.
When I put the car away for the winter I disconnect the main cables which detaches the battery from the car. The only thing left connected is the stereo which has a memory and a clock.
They both create just enough of a draw to keep the tender coming on from time to time to keep it tended over the winter and perfectly healthy.
Thanks alot for the info. I called the company I bought the Battery Tender from and they said the same thing. They also said that when the instructions talk about a good ground, they mean the outlet that you plug into must be a grounded outlet. I don't have one nearby as I live in an older house so I will have to figure something out. I thought maybe a three prong adapter with a power surge strip plugged into it would work. What do you think?
I have an 88' Chevy Pickup (bought new) that I use 2 or 3 times a year (maybe 50 miles). I have had one of these $15 Battery Butlers hooked up to it for almost 4 years continuously and it always starts right up. Use them on the Vettes too.
Yeah I have a few of those too. Cheap, and they do work. I keep one on my shop battery. However, I had one go up in smoke and I have had one swell a battery. Being just a float charger it's a little bit different, yet still effective in some cases.
Originally Posted by manzanman
I don't have one nearby as I live in an older house so I will have to figure something out. I thought maybe a three prong adapter with a power surge strip plugged into it would work. What do you think?