[QUOTE=Gelbster;449161]The technology for what used to be called trickle chargers and then float chargers has changed. The new device includes a sequence to de-sulfate the battery and automatically adjusts the rate of charge.
Here is one example that I use:
BatteryMINDer Model 1510
BatteryMINDer 1510 | 12 Volt Maintenance Charger with 10 Year Warranty
There are other models and other brands that do the same hi-tech battery care.[/QUOTE
Just ordered the 1510 for my 2002 Boxster S, hopefully one less thing to worry about this winter.
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