Dead battery, need help with some questions - Ford Mustang Forum
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post #1 of 20 (permalink) Old 02-09-2020 Thread Starter
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Dead battery, need help with some questions

Hey all. Will try to keep this short. I bought a 2014 GT in Oct 2019. It has been sitting in my garage. It gets very cold here, and expectedly, the battery is dead. The key FOB wont even unlock the doors, so I take it the battery is fully drained.

I bought a Noco Genius1 charger/tender. I have a Motorcraft AZ BXT-96R battery in it. Research tells me this is an OEM battery. I do not know what TYPE of battery this is (AGM, Lithium, wet-cell etc.) nor how many "Ah" it is.

My Noco Genius1 unit has 4 modes. 12V, 12V AGM, 12V Lithium and a 6V.

I know my battery is 12V, but don't know anything more. Research came up empty. I have been "charging" it on 12V mode for about 14 hrs, and still no luck.

Any ideas?

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post #2 of 20 (permalink) Old 02-09-2020
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Needs to be replaced. When mine died, I just went to NAPA and they looked it up and sold me what I needed.

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post #3 of 20 (permalink) Old 02-09-2020
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12v, Basic wet cell. If the Battery is dead the trickle charger might not be enough.
My NOCO Genius G7200 will charge my group 31 Deep Cell Marine battery in 8 hours.
Are you sure it is hooked up correctly and the cable didn't come off or something in that order.
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post #4 of 20 (permalink) Old 02-09-2020 Thread Starter
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Quote:
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12v, Basic wet cell. If the Battery is dead the trickle charger might not be enough.
My NOCO Genius G7200 will charge my group 31 Deep Cell Marine battery in 8 hours.
Are you sure it is hooked up correctly and the cable didn't come off or something in that order.
If it is wet cell, then 12V mode should be working (assuming battery isn't dead-dead).

It is pulsing red in the 12V mode so it should be "charging". + and - are hooked up correctly.

I am assuming it's the OEM battery and is fully dead due to the extreme cold we get here in Minnesota. Someone suggested getting an Interstate battery from Costco.
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post #5 of 20 (permalink) Old 02-09-2020
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Trickle charger can take a few days to charge a fully drained battery, it all depends on how many amps it puts out.

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post #6 of 20 (permalink) Old 02-09-2020 Thread Starter
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Quote:
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Trickle charger can take a few days to charge a fully drained battery, it all depends on how many amps it puts out.
It is 1 amp

https://www.amazon.com/NOCO-GENIUS1-.../dp/B07W46BX31
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post #7 of 20 (permalink) Old 02-10-2020
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chances are the battery is completely dead and will need to be replaced, but you could give it another day or two to be sure

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post #8 of 20 (permalink) Old 02-10-2020
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My factory battery lasted around 7 years so I went down to my local Ford dealer and bought another one. I think it was around $150
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post #9 of 20 (permalink) Old 02-10-2020
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Both my Mustang and F150 have Walmart Batteries in them. The Mustang is going on year 3. It originally went bad from my Trickle Charger/battery tender overcharged it and dried it out. That was before the NOCO Genius.

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A "typical" automotive battery has about 70 amp-hours of capacity (varies based on size and temperature). That means a one amp charger will take well over 70 hours to charge it, since a smart charger should not just deliver 1 amp all of the time. If it's really smart, it should deliver a small charge until the battery comes off "dead", then ramp up to one amp, and then taper off when the battery nears full charge.

You might consider borrowing a 10 amp battery charger or similar and connect it for a few hours just to see if the battery will even take a charge or not. At best, it will literally take days to make this determination with your one amp trickle charger.

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Mine is 7.2 amps, That is the one that the Manufacturer of my Pool Vacuum remends for overnight charging.
I do have a 200 AMP Charger that will start it in my Garage but will also do 10 and 40 amps.

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Quote:
Originally Posted by Mycelus View Post
Someone suggested getting an Interstate battery from Costco.

This is the last Interstate battery I ever purchased. It was less than a month old when this happened.
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Last edited by crjackson2134; 02-11-2020 at 04:11 PM.
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I have also had local shops recommend Interstate batteries . . . I think they do it because they make a lot of money on them . . . I think crjackson's melt-down is an exception not the rule, but it does show that there is nothing magic about them . . .

I have had good luck with Walmart batteries, they are relatively cheap and readily available at your local Wally World, and as far as I can tell they are just as good as the higher priced batteries, that is what I will be using in all my cars from here forward

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Dead battery, need help with some questions

Quote:
Originally Posted by David Young View Post
My factory battery lasted around 7 years so I went down to my local Ford dealer and bought another one. I think it was around $150


That's what I ended up doing too. I was originally going to install a Costco Interstate battery but both of the Costcos close to me said it was special order and would take a few days to get. That's more than a one-time inconvenience potentially, in the case where you need a warranty replacement, i'd have been stuck waiting again for a special order. The OEM Motorcraft battery available at the dealer a block down from Costco was only ~$40 more and I got good service from the first one.
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Last edited by wjbertrand; 02-11-2020 at 11:41 PM.
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I think crjackson's melt-down is an exception not the rule, but it does show that there is nothing magic about them . . .
I think you're right, it was the exception. That said, it was all the exception I needed to turn me away from future purchases. As you can probably guess, I lost the whole truck in this meltdown.

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