Quote:
Originally Posted by ///M Power-Belgium
Quote:
Originally Posted by Lucky1
Hi, I have a CTEK MUS 4.3 POLAR charger which I use on my 2015 Porsche 911 Carrera 4S.
Someone told me it is not safe to use this trickle charger indoors (in my garage) on my car for long term winter storage and that it is safe for outdoor use only. Said this is due to the amperage being high (4.3 vs 3.3 on my other CTEK). I always leave it on snowflake winter trickle mode.
Anybody know whether this is true or not and the safe way to operate it for long term winter storage? I did e-mail CTEK for comment.
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As far as I know is CTEK the best and safest battery charger on the market , by his smart charge mode .
Never got issues in the last 7 years regarding my CTEK in my garage during weekends and entire winters .
I highly recommend CTEK 
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Thanks! I know all about CTEK's reputation and that they are very popular with the automotive enthusiast crowd. My question was specific as to whether this exact model of CTEK charger is safe for prolonged indoor garage use as I'm being told the amperage on it is too high and will bubble the battery if not used outdoors.