12V battery charging

[22XLThybrid]

I'm getting the deep sleep messages too. If I were to connect a small, 1 amp battery maintainer, where should I connect it? Under the hood at the jump posts, or directly to the under seat battery? Does it matter?

I would connect to the jump posts under the hood. I just use a battery keeper like You would use for a lawn tractor or a motorcycle. It won't overcharge and just keep it topped. Kind of silly to pull apart the battery all the time. I've pulled off the red positive here so you can see underneath and then the negative post is up on the fender and it's also circled. I've got motorcycles and another old truck so I'm just kind of used to doing this with vehicles not getting used. I think it's cool it gives you a reminder in the phone app if the 12 volt battery charge is getting down there.

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[BILLNOROVILLE]

I average about 489 miles per month over 1 year of ownership of my hybrid Maverick. After all the posts on dead batteries and low usage I bought a battery pack and keep it under the seat should I get the message or 12 volt battery low enough to start the truck. I have motorcycles I ride about 120 miles per month and they are always on a battery tender. If I only drove my truck that much it makes perfect sense to me to put it on a battery tender. Hard to think Ford did something wrong when I fail to use it like most people who buy a new utility verhicle. It's not a collector car you spend more time storing it than driving it. And yes, I owned a collector car once that I looked at more than drove, but it had no electronics running when off. It took 7 years for the battery to go bad.

 

[Uncle Ed]

I'm getting the deep sleep messages too. If I were to connect a small, 1 amp battery maintainer, where should I connect it? Under the hood at the jump posts, or directly to the under seat battery? Does it matter?

I would go with 22XLTHybrid 's cable connection photo little further in this post. When you receive low voltage warning might be a good idea to measure the voltage at the battery and at the posts under the hood near fuse box. Just to eliminate the possibility of bad cable.

 

[MakinDoForNow]

12V battery is charged via HVB, not ICE. As long as the vehicle is on, 12V is charging. If ICE is off, HVB is discharging until the ICE is needed.

However, the 12V battery is undersized and the fact that the vehicle is never fully off (FordPass Connect modem, etc.) means that the 12V battery seems to drain faster than it should when parked.

Or maybe my battery is just bad. Gonna go with the former for sure.

The ice will come in when HV. needs charging WHEN KEY IS IN READY POSITION NOT ACCESSORY. you can turn key to Ready with max idle limit turned off and let it do it's thing if you do not want to mess with multistage maintainer. With nothing extra on (headlights, AC, radio, etc) the ice will cycle on about 3 times the first hour maybe 2 times the second hour then will come on for 5-8 minutes about every 40-45 minutes to keep cats warm and HVB cool. Depending on sulfation it could take 10+ hours to almost fully charge 12v at the reducing amperage that is fed to battery. To get 100% you should use a multistage maintainer with sulfation and optimization cycles for five-six days or more about every three months. (For any brand of modern vehicle). I suspect that the setting some have reported of their OEM battery being AGM is only used to set the initial charge type for the initial new battery installed procedure. Then during the procedure it checks what the battery will actually accept within the test time period basing installed battery capacity on those results. This will allow you to install any battery in any condition or charge even with a dead cell and it will not be overcharged. Believing this when my 12v OEM 390 Cca was replaced with the OEM 470 CCA, I placed my noco g5 onto my jump posts for a full seven days before running the "up to 12 hour new battery installed with truck locked" procedure.

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