Battery Tender

[GTP]

I keep reading posts that claim there is a difference in connecting a tender to the fusebox versus directly to the battery, because of the BMS.

I will say this. IF there is a direct connection between the positive battery post and fusebox by a big fat wire, then there is no difference. Now, if there is some BMS-related black box between the battery and fusebox, then I could see that there could be a difference.

I would check the cable in my own car, but it is hibernating on its tender and under a car cover. BTW, I wired my tender pigtail to the fusebox and tower ground terminal, mainly out of convenience.

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[krishelnino]

There is a thread on installing the tender pigtail. Positive at the fuse box and negative on the strut tower. I just use this one. CTEK I have is not getting used any more as the battery goes into saver mode and I cannot update Ford Pass.

I have the same issue using Noco Genius5 5A. Even though I left my battery tender hooked, Ford Pass was giving me notifications about battery saver mode and I could no longer use the app

 

[ORRadtech]

I have the same issue using Noco Genius5 5A. Even though I left my battery tender hooked, Ford Pass was giving me notifications about battery saver mode and I could no longer use the app

I've said it before, even though lots of people argue and disagree, I'll say it again.
Connect both leads directly to the battery.

 

[Johnny Rockit]

I have the same issue using Noco Genius5 5A. Even though I left my battery tender hooked, Ford Pass was giving me notifications about battery saver mode and I could no longer use the app

This one started to do it as well. Nature of the beast I guess.
I cannot wait to drive it again.

 

[GTP]

There is a thread on installing the tender pigtail. Positive at the fuse box and negative on the strut tower. I just use this one. CTEK I have is not getting used any more as the battery goes into saver mode and I cannot update Ford Pass.

Maybe the car tracks the time between starts and goes into sleep mode even if the battery voltage is okay. ?

 

[Skye]

I have the same issue using Noco Genius5 5A. Even though I left my battery tender hooked, Ford Pass was giving me notifications about battery saver mode and I could no longer use the app

Maybe the car tracks the time between starts and goes into sleep mode even if the battery voltage is okay. ?

^ That's been my experience. If I connect my car and leave it, about two weeks later the car enter Deep Sleep Mode. I can tell on the Ford Performance tender: the device registers it has entered Stage 8, the final stage.

You can temporarily wake the car by using the remote to lock and/or unlock it. You can later open the car door, making it think you're going for a drive. If then left alone, the car will again enter Deep Sleep after close to two weeks.

Some additional factors to consider:

- That the selected tender is the correct type or size for the supported vehicle. Ninety-nine percent of the time it is. But occasionally someone has the wrong type for the supported battery

- The the tender has been installed per the manufacturer's instructions

- My comments assume any aftermarket devices (cameras, stereos, etc.) are off

 

[skinnyb]

Maybe the car tracks the time between starts and goes into sleep mode even if the battery voltage is okay. ?

This has been my experience as well. I believe it's a time thing, my tender can be attached, it goes into floating charge (battery full), but still goes into sleep in approximately 2 weeks every time. I can open the door, and power on the ignition (no start) and shut it off and it comes out of sleep for another 2 weeks. My 2018 F150 did this as well, I kept it on the same tender for the last few months I had it when it was parked for a long time.

 

[Johnny Rockit]

Maybe the car tracks the time between starts and goes into sleep mode even if the battery voltage is okay. ?

No clue but the tender reads 90% so I don't worry about it.

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