The models of the 996 997 series are known for their comparatively high quiescent current consumption, so that the heavy starter battery fitted as standard can no longer provide sufficient starting power after just a few weeks of inactivity...
"Same issue with the 997 and 991 Porsches. They drain the batteries within a few days.
Since I also have a LiteBlox in my 997, I have had 0 problems.
And you can't save 20 kg more cheaply than with a battery like this!"
(lukecustoms)
Our customer OK-Chiptuning has now replaced the old lead-acid car battery with our innovative LB28XX LiFePO4 battery plus matching 99X Adapter plate and can now comfortably park his Porsche 996 turbo for longer periods of time with our smartphone app from the battery: