battery tender
#1
Instructor
Thread Starter
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I have my battery tender, the oem Porsche one that plugs into lighter socket from my 96 993. I bought it back in 2002 then sold the car a few years ago. Does anyone know if its compatible with the new 991?
#3
Nordschleife Master
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The more recent C-Tek-based units are fine. The older wart-type units have been known to have failed rectifiers yielding a rippled waveform which will cook batteries. Check those if you have them.