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I still have the original group 65 Motorcraft battery in my 17' F-250 gasser. It's never leaked and load tests in the green but very close to weak. If I don't drive the truck for 5 days or so, the battery gets a tender. Although the truck starts fine, I can tell sometimes that it drags just a little. I do carry a Hulkman charging pack in case the battery suddenly craps out. Current battery has 650cca and if I replace I would go with the Walmart Everstart Maxx but with 850cca. 3 year full replacement and Walmarts are everywhere. Is it ok to jump up to 850cca from 650? Don't want to hurt anything sensitive, lol. I know I'm playing with fire relying on a battery that old but it's almost become a challenge as to how long I can keep this thing going.
I'm of the school that as soon as you start noticing a lagging start/ignition, it's time to make a change. That avoids getting stranded somewhere either just you, someone driving your truck (i.e. family member) or your significant other. I'm sure most of us on this forum will notice a slight hesitation immediately. The sound it makes when it turns over is very familiar so it's easy to notice, "Hmm, that was a little different than it normally is..." I would always rather be proactive than reactive. Batteries never fail in a good location or at a convenient time, never.
The BSM will start shutting the radio down moments after turning the truck off. That is when it is time to replace it. When you open the door and after a minute or two a message displays saying to save the battery, NOW is the time to replace.
Yes, I would change it at your next opportunity. For the money, I prefer to have confidence the battery will do its job rather than wonder if it will fail when starting the truck. Even with a readily available jump pack, I would change the battery now, when it is a convenient time, rather than being forced to change it at who knows when.
Another thought, as the battery weakens, it starts causing electrical anomalies. These are generally just annoyances but can affect the truck's operation.
A personal story. The 5-1/2 year old battery in my Chrysler Pacifica gave little advance warning of failure. It worked perfectly fine up to the day I sensed a very slight hesitation when starting. It started fine and drove fine. I left it in a parking lot for 2 or 3 hours. When I returned the battery was too weak to unlock the doors with the fob. I had to use the mechanical key in the driver's door. Fortunately, I had a jump pack and was soon on my way. I had to replace the battery that day.
I'm of the school that as soon as you start noticing a lagging start/ignition, it's time to make a change. That avoids getting stranded somewhere either just you, someone driving your truck (i.e. family member) or your significant other. I'm sure most of us on this forum will notice a slight hesitation immediately. The sound it makes when it turns over is very familiar so it's easy to notice, "Hmm, that was a little different than it normally is..." I would always rather be proactive than reactive. Batteries never fail in a good location or at a convenient time, never.
Yes, I'm leaning this way. Better safe than sorry.
Originally Posted by fordboy424
Check the dealer for a replacement battery. More often than not they are the cheapest for battery replacement.
Hmm, I never thought checking with the dealer but Motorcraft lead acid batteries don't exactly have the best reputation, lol.
Another question I have; Is it possible to hook something like a charger or another battery via jumper cables to the trucks cables while removing the battery to save the presets in the truck? I surely don't want to hurt the PCM, ECM or any of the other CM's in there, lol.