The common wisdom is that AGM (absorbent glass mat) batteries withstand periods of limited use better than traditional lead acid batteries. I don't drive my Boxster every day. Some weeks I might drive it 3 times and other weeks as much as 5 times.
I installed an AGM battery in my Boxster two years ago and one in my Mercedes C230 in April 2018. So far, both have been reliable. The battery in my Mercedes is older, but I usually drive that car more often than the Boxster.
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2000 Arctic Silver/Black, Hard Top, On Board Computer
PNP Rear Speakers, HAES 6-Channel Amp, Avic Z140BH,
Painted Bumperettes, 2004 (OEM) Top, Homelink integrated in dash with Targa switch, 997 Shifter, Carrera Gauge Cluster with silver gauge faces, heated 997 adaptive sports seats, Litronics, silver console
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