[Secondclaw]

My car's (2020 TI hybrid) 3rd battery appears to be going again. I get 'car in deep sleep mode' in FordPass and passenger side door doesn't open via touch anymore (which i believe is a scenario where battery is too weak and car shuts the feature off to conserve power). While I have extended warranty I really don't want to replace it for the 3rd time with the same garbage that was put on before, and want to go with AGM battery recommendation. Post-covid I typically drive 2-3 times a week at most, so there is less opportunity for that small battery to get recharged.
Does anyone have recommendations for a facility in South Florida (preferably Broward) that can do all the work, like shifting mounting bracket, and possibly reprogramming battery type, etc? I called a few small auto-shops around me, and while i still have one to check with, others were reluctant to put in a battery that isn't listed in OEM specs.
Also, is reprogramming required? I.e. changing charge from 110% (assuming that's what it is set to?). I can do the battery monitoring module reset myself.

Also, I have to leave the car parked for approximately 6 weeks some time soon, while i'm traveling. What would be best way to make sure it stays functional by the time i return? I have no ac power by the parking spot so i can't put in a trickle charger, and I currently don't have anyone that can drive the car periodically. I live in a condo and prefer not to unplug the battery in case car needs to be moved for repairs in the garage, etc. It's my hope that AGM battery could last 6 weeks ...

Thanks!

 

[MysticRob]

My car's (2020 TI hybrid) 3rd battery appears to be going again. I get 'car in deep sleep mode' in FordPass and passenger side door doesn't open via touch anymore (which i believe is a scenario where battery is too weak and car shuts the feature off to conserve power).

Sounds like a waste of time if the cause of the parasitic drain, which is what it sounds like is happening, isn't resolved. Have all the modules been updated to the latest code? If so, have the modules been disabled/unplugged/monitored individually to see if the drain stops so the techs will know which one is faulty and needs replaced?

 

[Secondclaw]

Sounds like a waste of time if the cause of the parasitic drain, which is what it sounds like is happening, isn't resolved. Have all the modules been updated to the latest code? If so, have the modules been disabled/unplugged/monitored individually to see if the drain stops so the techs will know which one is faulty and needs replaced?

When I brought it in a year ago to replace the battery, Ford service claimed that they tested it for parasitic drain and for over voltage and everything was fine. They then told me that I have to drive it every few days for battery to stay healthy (which none ofy older cars needed to do). So this battery at least lasting longer than the first two, but it's definitely going, especially with me sometimes only driving once a week. Supposedly I'm up to date on all recalls and updates. What specifically they told me is that if car isn't driven for a few days, the battery will be charged more aggressively once it starts and it can wear out the cells fast. They said that they saw cell damage in the battery when they replaced it. I have no idea if this is BS or not.

 

[MysticRob]

So this battery at least lasting longer than the first two, but it's definitely going, especially with me sometimes only driving once a week.

So why not put a battery charger on it?

 

[Secondclaw]

So why not put a battery charger on it?

I don't have power outlet by my parking spot in the building. Are there battery operated chargers that can maintain a 12v? All of the ones I've looked at are not battery operated.

 

[my2cents]

My car's (2020 TI hybrid) 3rd battery appears to be going again. I get 'car in deep sleep mode' in FordPass and passenger side door doesn't open via touch anymore (which i believe is a scenario where battery is too weak and car shuts the feature off to conserve power). While I have extended warranty I really don't want to replace it for the 3rd time with the same garbage that was put on before, and want to go with AGM battery recommendation. Post-covid I typically drive 2-3 times a week at most, so there is less opportunity for that small battery to get recharged.
Does anyone have recommendations for a facility in South Florida (preferably Broward) that can do all the work, like shifting mounting bracket, and possibly reprogramming battery type, etc? I called a few small auto-shops around me, and while i still have one to check with, others were reluctant to put in a battery that isn't listed in OEM specs.
Also, is reprogramming required? I.e. changing charge from 110% (assuming that's what it is set to?). I can do the battery monitoring module reset myself.

Also, I have to leave the car parked for approximately 6 weeks some time soon, while i'm traveling. What would be best way to make sure it stays functional by the time i return? I have no ac power by the parking spot so i can't put in a trickle charger, and I currently don't have anyone that can drive the car periodically. I live in a condo and prefer not to unplug the battery in case car needs to be moved for repairs in the garage, etc. It's my hope that AGM battery could last 6 weeks ...

Thanks!

I have one of these. Charge lasts a long time. Used it a couple of times to help people in a supermarket parking lot. Does the job. Small unit and I keep it in the car.

Scosche PowerUp® 700

700 Amp Portable Car Jump Starter / USB Power Bank and LED Flashlight

www.scosche.com

 

[Secondclaw]

I have one of these. Charge lasts a long time. Used it a couple of times to help people in a supermarket parking lot. Does the job. Small unit and I keep it in the car.

Scosche PowerUp® 700

700 Amp Portable Car Jump Starter / USB Power Bank and LED Flashlight

www.scosche.com

Oh I have one of these. Used it multiple times when my last 2 batteries kept dying. But that isn't really the point, these are used to start a dead battery, but my issue is the actual non dead battery is barely alive right now. I drove the car 40min yesterday and today it was in powersave mode, so no FordPass, no passenger side easy open and no kick to open the trunk after shopping. It won't be addressed by the booster. What I was hoping for with AGM battery was to make sure that with my every 2-3 day drive the battery has sufficient charge not to lose functionality, and hopefully not die if I leave it for 5 weeks. If it sounds like it won't address the issue I will have to get this battery replaced by Ford again. But I have no doubt it will fail within a year again.

 

[Golluk]

I don't have power outlet by my parking spot in the building. Are there battery operated chargers that can maintain a 12v? All of the ones I've looked at are not battery operated.

I'd think your best bet in that case would be a solar trickle charger. I technically could do what your asking with my mini CV/CC power supply that runs off a USB power bank. Set to 0.5A and 13.2V, it would likely hold up for a couple days. Depends on how much parasitic draw you have, and loses in the bank+power supply. Just not sure how well the power supply would handle when you turn the car on and it has 15V on it. Then have the battery bank recharge from the 12V outlet with an adapter anytime you're running.

 

[Secondclaw]

I'd think your best bet in that case would be a solar trickle charger. I technically could do what your asking with my mini CV/CC power supply that runs off a USB power bank. Set to 0.5A and 13.2V, it would likely hold up for a couple days. Depends on how much parasitic draw you have, and loses in the bank+power supply. Just not sure how well the power supply would handle when you turn the car on and it has 15V on it. Then have the battery bank recharge from the 12V outlet with an adapter anytime you're running.

Unfortunately the car is in an underground garage ... this is why I'm stuck.

 

[jpohlman]

Look at the bright side, we can at least easily GET OUT of our cars when the 12v battery goes bad.
Evidently it's an issue with Teslas:

Dead Teslas keep locking owners out of (and inside) their cars

There is an unmarked release latch described in the owner’s manual—located in the battery-powered glove box.

www.popsci.com