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SwissXC90 · Sep 15th, 2019, 06:42

You can connect the CTEK to the battery terminals in the boot or to the main power distribution box in the engine bay

The engine bay terminals will give you direct access to the battery with massive fat power cables that have absolute negligible voltage drop. That's where I connect.

I used to connect to the permanent live socket in the boot but found the socket got hot due to not very good connections and also it runs through the REM and a current monitor, so not a true battery voltage state.

As other's say, the permanent 12V and ground on the trailer socket is another alternative. The advantage of the 12V on the trailer socket is that it is fused on the REM

Sep 15th, 2019, 06:42	#4
SwissXC90 Premier Member Last Online: Mar 20th, 2024 18:26 Join Date: Jan 2016 Location: Cross Country	You can connect the CTEK to the battery terminals in the boot or to the main power distribution box in the engine bay The engine bay terminals will give you direct access to the battery with massive fat power cables that have absolute negligible voltage drop. That's where I connect. I used to connect to the permanent live socket in the boot but found the socket got hot due to not very good connections and also it runs through the REM and a current monitor, so not a true battery voltage state. As other's say, the permanent 12V and ground on the trailer socket is another alternative. The advantage of the 12V on the trailer socket is that it is fused on the REM __________________ XC90 R-Design MY2009, Black Sapphire Metallic. HP-Sound, RSE, Nav, Tel, ParkingCam, BLIS, ParkingHeater, RestHeat, Removable Towbar, Summer: CRATUS 20x8 on Pirelli Scorpion Zeros 255/45, Winter: NEPTUNE 17x7 on Continental WinterContact 4x4 235/65.