C63 and an optimate.

[cbx6pot]

Hello all. First post as I've finally gotten round to getting a car again!

I've picked up a C63 the other day and all's well with her but I work away a bit (couple of weeks at a time) and just to be sure of no bother I'm going to get an optimate fitted so that the drain from the alarm doesn't discharge the battery is she's not charging for a while. It's always worked fine on the bikes. Just wondering if anyone has had any experience in having one fitted and if there were any issues.

Thanks!