Please recommend a battery tender for a 2007 boxster - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Joe B · 10-05-2015, 04:06 PM

Quote:

Originally Posted by cas951

Which model do you have?

Battery Chargers - CTEK Battery Chargers MUS 4.3 POLAR

Topless · 10-05-2015, 08:42 PM

Ctek is tried and true as a reliable tender for lead acid batteries. Just plug it in and forget it until spring.

Only crazy motorsport types like me use 5 lb lithium batteries that require special care and feeding.

I don't recommend leaving them in your car at all for winterizing but rather remove and store separately. I have a NOCO battery charger maintainer designed to charge lead acid, AGM, and lithium, batteries with their specific needs. The trouble is, this is a very smart charger with microprocessor technology to sense your battery type and condition. In a power outage it may lose it's memory and software crash... no charging taking place at all. I like it but keep it in the garage where I keep a close eye on it.