It's probably just a bit of arse-covering by the manufacturer and it'll be fine if you connect it with the battery still on the car.
FWIW, I've got an Accumate charger which works fine, I often connect it to the jump-start points under the bonnet as I can't open the boot when the car's in the garage. I did have a CTEK that came with the car, but it died.
__________________
Now with added SG CSL.
|