However, I am concerned that it took you an entire week to have your tender go green. It certainly isn't going to blow anything up unless you have it connected to a block of C4! hahahaha. I am not aware of any harm that will come to your battery no matter how long you leave it connected. Once it tops off the charge it shuts off and stops feeding a charge to the battery. It communicates with the battery and only charges when the battery's charge drops below optimum levels. Good luck and let us know how you make out!Īs someone has already said this component is a battery tender or also known as a trickle charger.
You may want to check this out before discounting the battery tender. It appears slightly more comprehensive than the troubleshooting instructions in the Ferrari battery tender instructions booklet. I found this trouble-shooting guide for the CTEK US 3300 and I suspect it does apply to our Ferrari units. The battery tender may in fact be working properly and indicating a problem elsewhere. However upon my checking, it appears the charger for our California is actually a CTEK US 3300, a better unit (see lower left in photo). Others indicated the problematic Ferrari battery tender they had for their older FCars was a CTEK US 800. One of the posters also mentioned that if you disconnect the battery tender from the AC while leaving it connected to the battery, it will discharge the battery. I found this earlier FChat thread discussing the same problem. Thanks.Ĭlick to expand.You know, you might correct. Curious to hear if others have the same issue. Also have a CTEK Mus 4.3 for the other cars, and it's a lot better than this thing, but it's not that easy to hook it up directly to the battery. Or if something is wrong with the charger. Wondering if this happens to others, making it 'normal'. But the other day it didn't after being connected for over a day, and I know it takes less than a day to fully charge. Well, decided to fully close the trunk to charge the battery, and it turned green for a while. So far the charger hasn't feel warm, like when it's charging, so it might be just the LEDs acting up or something. Don't like to leave the charger connected after it turns green for more than a few hours, but don't like to worry the battery might get overcharged and explode. Before, it only happened when I left the trunk not fully closed (as not to damage the weatherstripping with the cable), even though as you all know, the trunk light goes out after a while.