Interesting discussion. I will be exploring this soon once I have a drive as quite frankly I'm tired of cars bonging at me that they have low battery.
Equally I'm not going to be opening the bonnet of the 911 and removing the plastic coverings to get at the battery each time. Same for the RR which I believe has one under the boot floor and one in the side with jump posts in the engine bay.
Doesn't Harry M use the pigtails without issue and I thought had indicator lights showing SOC?
Your fleet running reports
Re: Your fleet running reports
Alfa had posts under the bonnet - you had to use these for jump starting but the *recommendation* was to use the posts under the engine bay for charging as well.
Quick search shows that BMW also says to only using the posts due to IBS (battery sensor, not because it causes explosive bowel movements).
Quick search shows that BMW also says to only using the posts due to IBS (battery sensor, not because it causes explosive bowel movements).
Re: Your fleet running reports
That’s the general rule for cars with battery management, hence I’ve always followed it.Matty wrote: Wed Mar 18, 2026 10:27 am Alfa had posts under the bonnet - you had to use these for jump starting but the *recommendation* was to use the posts under the engine bay for charging as well.
Quick search shows that BMW also says to only using the posts due to IBS (battery sensor, not because it causes explosive bowel movements).
(Also the CTEKs with the led indicator which is always on will bong up a increased rate of battery discharge message on BMWs)
How about not having a sig at all?
Re: Your fleet running reports
That's why you fit the permanent extension lead - you run the end of it to somewhere convenient.GG. wrote: Wed Mar 18, 2026 10:17 am Equally I'm not going to be opening the bonnet of the 911 and removing the plastic coverings to get at the battery each time.
If an Intelligent Battery Sensor can't cope with a battery being charged, it's not very intelligent is it. However, that's a different question to using the jump start terminals near the engine; a CTEK only outputs a relatively small current and you want that to be as direct to the battery as possible rather than through the resistance of the car's body. I don't have an IBS on any of the cars I've attached permanent quick connectors to, but if you do then there should be a post near the battery to connect the black lead to.
Re: Your fleet running reports
It’s because you’re bypassing the sensor by charging directly. It’s why when you fit a new battery you code it. The car will relearn over say 30 mins without it but until then it could be charging a fully charged battery.
How about not having a sig at all?