Finally Used the Portable Jump Box

[JBnorthTX]

Last night my '22 Maverick hybrid with 38k miles wouldn't start but fortunately, the jump box I bought on Amazon 3 years ago did the trick to get it started. I bought it because of all the reports of 12 volt battery failures, but I never had to use it until now.

Four years is typical of battery life I've gotten in my vehicles, so it seems pretty normal. I thought I'd post the experience in contrast to the "abnormal" issues. I understand the check engine light is on because I need to do the BMS relearn.

One complaint is the hassle of getting the 12 volt battery out from under the rear seat with all that plastic in the way. I punted and am having a shop do it.

I was relieved the jump worked, because prior to jumping it I Googled the "Stop safely" message that popped up in the instrument cluster when the truck wouldn't start. AI told me it could be something really bad.

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[1929]

Had you charged the jump box in the past three years?

 

[JBnorthTX]

Had you charged the jump box in the past three years?

Yes. Before any road trip with either of two vehicles. The last time I had charged it was early in June of this year.

 

[notaz3]

We have jump boxes in every vehicle. Every six months I take them out and charge them up. I also hook the vehicle up to a float charger just to make sure everything is toped off.

 

[Brick Row]

Last night my '22 Maverick hybrid with 38k miles wouldn't start but fortunately, the jump box I bought on Amazon 3 years ago did the trick to get it started. I bought it because of all the reports of 12 volt battery failures, but I never had to use it until now.

Four years is typical of battery life I've gotten in my vehicles, so it seems pretty normal. I thought I'd post the experience in contrast to the "abnormal" issues. I understand the check engine light is on because I need to do the BMS relearn.

One complaint is the hassle of getting the 12 volt battery out from under the rear seat with all that plastic in the way. I punted and am having a shop do it.

I was relieved the jump worked, because prior to jumping it I Googled the "Stop safely" message that popped up in the instrument cluster when the truck wouldn't start. AI told me it could be something really bad.

Is/are there posts under the hood to attach the jumpers or do you have to go directly to the battery?

 

[JBnorthTX]

Is/are there posts under the hood to attach the jumpers or do you have to go directly to the battery?

Yes. The positive post is covered by a red rubber piece. The negative post sticks upward out of the fender. Top right portion of the engine compartment when facing the truck from the front.

 

[Brick Row]

Thank You! I appreciate the note.

 

[Redline]

I bought a super capacitor because I won't remember to keep a battery pack charged at all times

 

[JBnorthTX]

I bought a super capacitor because I won't remember to keep it charged

I was probably lucky I charged it for a road trip fairly recently.

 

[ychuck46]

Last night my '22 Maverick hybrid with 38k miles wouldn't start but fortunately, the jump box I bought on Amazon 3 years ago did the trick to get it started. I bought it because of all the reports of 12 volt battery failures, but I never had to use it until now.

Actually most new vehicle batteries are getting only about 3-4 years of service nowadays, with the batteries in hybrids usually lasting a little less. Three years and 38K miles is not bad. We are in the second year with second Mav we purchased, a '25 hybrid XLT, and I will anticipate replacing that sometime as early as next year. Since it doesn't get driven during the winter due to travel it might last as long as four years averaging 6-8K miles per year. Best wishes.

 

[JBnorthTX]

Actually most new vehicle batteries are getting only about 3-4 years of service nowadays, with the batteries in hybrids usually lasting a little less. Three years and 38K miles is not bad. We are in the second year with second Mav we purchased, a '25 hybrid XLT, and I will anticipate replacing that sometime as early as next year. Since it doesn't get driven during the winter due to travel it might last as long as four years averaging 6-8K miles per year. Best wishes.

Yes, the original battery lasted 4 years, which as I mentioned in my original post is typical.

 

[ychuck46]

Yes, the original battery lasted 4 years, which as I mentioned in my original post is typical.

BTW, you mentioned in your OP that getting the battery out of the rear underseat area is a hassle; others have said the same thing in other discussion posts. Not sure why. I removed it a couple of times on our original '22 and never found it to be an issue. I assume that when I eventually have to do so on our '25 it also shouldn't be a problem since the setup looks the same.

 

[JBnorthTX]

BTW, you mentioned in your OP that getting the battery out of the rear underseat area is a hassle; others have said the same thing in other discussion posts. Not sure why. I removed it a couple of times on our original '22 and never found it to be an issue. I assume that when I eventually have to do so on our '25 it also shouldn't be a problem since the setup looks the same.

Glad it was easy for you, but it's a tighter and more awkward spot compared to a battery in the engine compartment. At first it looked like I would need to go out and buy a longer bolt extension than I currently own. Then I watched a video where someone pulled out the plastic pieces around the battery, but he struggled a lot to get one of them out. With 100 degree temperatures where I live, I decided to pass.

 

[grandpopa'sMPGs]

My 2018 Chevy Cruze still has its original battery.

 

[JBnorthTX]

My 2018 Chevy Cruze still has its original battery.

That's phenomenal. The best I've had was my 2019 Mustang, when the original lasted until 2025. It was an outlier, though. The Texas heat kills most of them sooner than that.

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