I have a
CTEK
battery
conditioner and want to attach permanent charging leads. The problem is that I can see no labeled ground to attach my negative lead to (unlike what photos of other
Caymans
clearly show).
The manual does not specify where they are, only that they exist.
The attached photo shows what I think may be one but I'm not sure and hope someone can confirm or advise otherwise before I commit..
Thanks in advance for any guidance
a
Any clean bolt/stud on the body.
Where ever the negative
battery
lead goes.
I’m pretty sure the
CTEK
will let you know if it’s not properly connected. Also, you can use a
multimeter
to test. If you get a reading that is the same as touching the
battery
terminals, I would think you have found a good ground.
That's very helpful - thanks
CTEK
and all other
battery
maintainers can be connected directly to the
battery
terminals without any negative ramification. The reason is that the amps are significantly low so no harm can occur. I've been doing exactly that for many, many years. I also confirmed that approach with a major
battery
maintainer manufacturer quite a few years ago.
The risk of connecting directly to the
battery
is a spark when connecting or disconnecting.
Except for this it will do no hard, and the current is not the factor.
Never had one spark in 20 years of usage every couple days on multiple cars. I don't
plug
the unit into the electrical outlet until the
battery
side is already hooked up. Same with disconnect. Unplug the unit first.
The threaded stud/nut your arrow sort of
points
to..
Is perfect. It's twin is where the battery negative line goes on the other side of the battery.
BTW - it appears your cowl drain plugs are still in place (the half-circle at the bottom edge of the photo). It shows because of all the buildup of dirt in the wet box. IF it was me (and it was) I'd remove them (one on each side of the battery) avoiding the potential for the box to fill with water causing flooding inside the car. Just sayin'... the only purpose I can think they might serve is keeping rodents out of the battery area, but since they are sort of open by design I think they aren't super effective for that purpose. Porsche engineers are very strange with drains.
I've got my cheap MotoPower charger connected directly to the
battery
negative - I don't recall what the scant instructions it came with said to do it this way or to connect it to body ground. Should I be worried about this?
Your connection is NOT a problem. Typically the instructions I've seen that come with these units say specifically to attach to the
battery
terminals. I just double checked my fairly extensive instruction booklet, and it also says however, to locate the charging unit as far away from the
battery
as the cables permit, and to never place the unit directly above the
battery
as gases will corrode and damage the unit.
I just put the charging unit there for the pic - it is never even close to the
battery
- or the car for that matter - when I actually
plug
it in.