Question for the mechanically inclined?

Frenchy

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Battery could simply be shot. I have seen many batteries over the years ago bad and not take a charge even when the battery charger is charging them
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BladeRanger

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Hate to admit but I'm not. At all.

Yesterday, went to go somewhere in my Ranger and it was completely dead. Not even a chime upon opening the door. I thought that was a little strange as the keys were in my pocket and the lights were turned off. Assumed as normal that it was the battery. I jumped it off on my wife's car and it started no problem. Ok, battery is dead somehow. So I put it no the battery charger and left it overnight. Came down today and it's still completely dead. I know the charger works because I had just charged another battery. It showed it was charging while it was charging and that it was charged this morning.

What could be draining my battery? Taking it to the dealer on Monday, but curious on your thoughts.
Had same issue couple hours ago. The voltage measured 10.5V. I had to call AAA to jump start my Ranger. I just took it to the dealer last weekend for engine oil, diff oil and transmission oil change at 41K mile and the dealer check the battery and they say it's good on the report. I just drove it for about 25 miles to see if the battery charge and its now reading 11.5V, I used a USB with a voltmeter to monitor my alternator and it's reading 14.2V so I know the alternator is not the issue. I notice at turn on there is a bit of hesitation. I'll check it again in the morning.
What is the warranty on our battery? My Ranger is about 3 years old got it in 2020.

Wondering what battery replacement is good beside the FoMoCo brand?

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BladeRanger

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Battery could simply be shot. I have seen many batteries over the years ago bad and not take a charge even when the battery charger is charging them
What's a good battery replacement beside the FoMoCo brand. It only seems to last about 3 years.
 


Frenchy

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What's a good battery replacement beside the FoMoCo brand. It only seems to last about 3 years.
That will depend on many factors. That said Ford does have the best warranty available on their batteries with a 100 month total warranty(36 free replacement and 64 month prorate)
 

DanielPierre

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Hate to admit but I'm not. At all.

Yesterday, went to go somewhere in my Ranger and it was completely dead. Not even a chime upon opening the door. I thought that was a little strange as the keys were in my pocket and the lights were turned off. Assumed as normal that it was the battery. I jumped it off on my wife's car and it started no problem. Ok, battery is dead somehow. So I put it no the battery charger and left it overnight. Came down today and it's still completely dead. I know the charger works because I had just charged another battery. It showed it was charging while it was charging and that it was charged this morning.

What could be draining my battery? Taking it to the dealer on Monday, but curious on your thoughts.
Bad battery cell(s). Also, make sure to turn off the auto firmware (software) update feature. If it’s “ON” and you regularly park your truck where there is no WiFi access it will keep searching by using battery power. Kind of like the same as turning your smart phone on Airplane mode when 30,000 ft up in the air.
 

Shawn_Mc

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Doing a voltage drop test on your connections is easy also. Just because the connection looks clean and good doesnt mean it is. I've seen 2.5-4V drops on a battery connection that looked fine.
 
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Thanks everyone for all the replies. I do really appreciate it. Apparently the bad cell battery theory proved correct. Just took it to the dealer and they put in a new battery under warranty.
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