Originally Posted by inastrangeland

And it is now the standard battery on the Turbo S. I guess Porsche didn't get the memo....

New lithium-ion lightweight starter battery

Lighter, more powerful, faster: the 911 Turbo S is equipped as standard with a lithium iron phosphate battery (LiFePO4). The new battery offers higher voltage stability and lower internal resistance in comparison with a conventional lead battery. For the driver, this translates into shorter response times and an improved auto start/stop function. Even when the battery charge level is low, the higher performance of the new power store also enables much longer operation of energy-intensive and electric on-board vehicle systems, such as the sound system, with the combustion engine switched off. This means fuel-saving stop phases can be activated more frequently. The LiFePO4 battery has a service life of up to 2.5 times longer than lead-acid batteries and offers up to seven-times higher cycle stability. Thanks to the advanced battery technology and power density, 20 per cent less space is needed and the weight of the on-board battery is reduced by more than half, from 27 kg to 12.75 kg. These features made it possible to reduce the 95 Ah capacity of a conventional lead-acid battery to 60 Ah for the LiFePO4 battery.

Originally Posted by G650

This video has already been posted in another thread, but I thought it would help to repost here. It specifically covers How to jump start the 992 and the lithium ion battery too.

Skip to 4:51 for the 992;

https://youtu.be/kvGI5wvm-d4

Originally Posted by TheStanman

What exactly is he advising? Just attach the jumper cables for 15 seconds but do not actually jump start it? That will close the switch and you can start it normally?