Porsche 911 Turbo MY02 with RESTART9

in Installation Examples

Installed a RESTART9 in my 911 Turbo using an adapter plate from Burkhart Engineering.

Ready on the the adapter plate, including Bluetooth monitor.

The 30kg Bosch it replaced.

Initially I kept the CTek Bluetooth monitor I had installed with the Bosch but then realised it was not suitable to a lithium battery and replaced with a lithium specific Antigravity one.

It turns the 3.6 Turbo flat six with no hesitation but I mustn't leave it off the tender (a lithium specific CTek charger) more than one week, this car has a huge parasitic draw, always been a problem even with lead-acid.

6 comments

6 Comments

laalves

Feb 01

Unfortunately, I'm no longer impressed with this battery. Over time, it started losing its capability to turn the engine happily and was really beginning to struggle. At startup, voltage started to dip under 8v, shutting down the radio, flickering the interior lights, etc. Had to replace it and chose a Varta AGM Silver series. Startup voltage never goes under 10.5V, very impressed with it.

Am keeping the LithiumMax in a corner of the garage until my Tesla 3 battery dies, maybe it will be useful there, since there's no need for strong discharge currents.

Very sad, these batteries are supposed to outlast the conventional ones, and this one lasted 2 years

Edited

Lithiumax Support

Jun 13

Replying to

We are sorry to hear that, as our batteries typically last many years more than 2, but do note your installation post is from 3 years ago. Typical life expectancy is 5 to 10 years. It is a much smaller and lighter battery than the AGM unit you replaced it with, saving you more than 25kg over its life. Notably you mentioned high electrical drain from the vehicle requiring constant maintenance charging. It’s important to note that lithium batteries do not respond optimally to being constantly charged, they like to cycle a bit. This is likely to have been a contributing factor to its shorter than typical life.

Edited