Interesting. Compared to my previous 2013 BMW X1, my early production 2021 BS BL battery is about a third the size and not AGM. Makes you wonder if Ford is saving space/money using lower capacity batteries and using this technique to compensate. My BMW always activated start stop even on short trips for over 7 years with original battery. Using chassis ground used to be standard way to jump start safely and way I use battery conditioner on BS. I'll see if I can post picture of what looks like this control module on my 2021 BS BL - similar location, but smaller than in video. Thanks Econonline for an informational post.
Thanks for this. I've been wondering why my trickle charging has only been effectively "charging" my battery for a day's worth of charge.
Connect the positive cable first. Then follow the negative cable over to the bolt connecting the cable to vehicle chassis. That's the best place to connect the negative clamp. There are two reasons (I can think of) for this:If I'm understanding this correctly, I should be putting my negative clamp where the Green markers in the photo are? I've been putting them directly on the negative terminal up until now.
started to make this correction to ground chassis connection and the entire post/stud began to back out.Connect the positive cable first. Then follow the negative cable over to the bolt connecting the cable to vehicle chassis. That's the best place to connect it. There are two reasons (I can think of) for this:
- It ensures the BMS is getting the data it needs.
- Sparks can ignite gas escaping from the battery. These are sealed batteries, but an unnoticed crack in the case can allow gas to escape. Connecting the negative away from the battery ensures any sparks you might generate by connecting the clamp will not ignite gasses near the battery.
similar set up on the baseHere's a photo of mine (Badlands). The stud for the ground connection to the chassis is rock solid. If yours is moving around you might need to tighten it up.
Hmmm. That's odd. I would try getting a look on the other side of the fender to see what's what. Do you have an inspection mirror?more than usual degree of cursing to loosen connection
went to back off the 13mm ground nut and the whole stud started to spin out (red arrow)
may just leave ground cable undisturbed "as is"Hmmm. That's odd. I would try getting a look on the other side of the fender to see what's what. Do you have an inspection mirror?
Battery Sensor Reset (Battery Management System (BMS) Reset):Have always had my trickle charge hooked up to the terminals as detailed when I installed it:
No issues. I charge with the vehicle off anyhow. I don't know why the video is charging koeo other than to demonstrate that the sensor operates. When you restart the car, it's going to recalculate the battery charge. Video admits the car recalculates state of charge every few hours regardless. If there was any other effect, there would be some complicated procedure to calibrate after a battery replacement. I think the point about not grabbing loads directly off the battery is the most important part.
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