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Popular Content
Showing content with the highest reputation on 03/10/2018 in all areas
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Not sure what you are referring to as an “AG3” battery, but I will assume you are talking about an AGM or Absorbed Glass Mat battery. AGM batteries require a slightly higher final charge voltage compared to a conventional flooded celll battery, but they do not require hard wiring. In any case, the lighter circuit in the car is wired to accommodate the use of a quality battery maintainer. The Porsche unit is actually a CTEK, which has a special setting specifically for use with AGM batteries to accommodate the higher finish voltage, so it will work fine with an AGM battery.1 point
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The difference between a trickle charger and a battery maintainer is that a trickle charger constantly applies a charge, whether the battery is fully charged or not. A battery maintainer, on the other hand, has circuitry that monitors the battery and charges only when the voltage has dropped below a preset level, thus preventing overcharging and damage. When the battery maintainer, senses the voltage has dropped, a battery tender will resume charging. Because of this a battery maintainer can be left connected indefinitely. A trickle charger should be disconnected and reconnected occasionally, probably used for charging once or twice a month for a day. I do not recommend using trickle chargers since people tend to forget and leave them connected.1 point
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Porsche’s were designed to use the cigarette lighter as a port to connect a quality battery maintainer (not a trickle charger).1 point