CTEK 15000 Battery Charger in Van

Not sure why you'd need to cut it off as my understanding is it's purpose is to measure the ambient temperature and there'd probably be little difference in this regard over the length of the van...save direct sunlight. Why not place an Anderson plug on the existing cable to truncate the clamps and connect the clamps to another Anderson plug so that you can recommission the unit if ever the need arises?? Just my thoughts. Cheers

"This is in the boot of the van, with the batteries at the rear of the van."

I would keep the 12V lead as short as possible: Do I read it that the batteries are at the opposite end of the van to the charger? I would move the charger to the batteries, and also use the temp probe. It stops the battery over charging.

I read some where that with some (gell?)batteries, as the temp rises, the resistance lowers and the current increases so the temp rises etc. I believe it is called battery runaway or similar. - not an expert here - just paraphrasing what I remember reading.

cheers

Didnt the Ctec come in a box ? Should have a pull -apart connection 12/18 inches from the battery clips and another cable with terminals to hard wire to battery.

Thanks for the replies.
Agree there is no need to cut off the temp probe wire after having another look at it. I thought it was connected to +ive wire clamp but it is not.
Van was "built around" battery box, which has slide and is not big enough for anything else to be added. There is a wire built into the van to run between the charger in the boot and the batteries. As i noted, hoping to be able to leave system as built and just put in new charger. I know there is an advantage in shorter wiring, but not wanting to go that way if avoidable.

Axel, the charger was in box with printed instructions. There is no disconnect on the leads that I can see. Leads are sheather with a shrinkwrap type material up to about 12" from clamps.
The instructions have lost a little in the translation, hence my question. They say that if the temp probe wire is "short circuited or disconnected", in addition to the extra light on the box, "charging voltage is then adjusted to the +25 degree C condition".
I guess my question could be "what does this last quoted bit mean?"
The question was really for someone familiar with THIS charger, rather than general charger advice.
Cheers
Jeff