CTEK branded battery charger. Same as BMW's.
Heres an amazon link to the exact one I am selling:
https://www.amazon.com/CTEK-56-158-A...attery+charger
Used only once for 3 weeks while I was away for an extended business trip. Works great. I put everything back in the original packaging including manual and storage bag.
$50 shipped or best offer
Text for quick response 714-675-9064