Joan Alcover

You have to keep it pressed to 10 seconds at least.

Having said that, please note the following (from a post by Nothingtoc):

In order to use the passenger socket charger, you need to follow the below procedure. The car has a lockout timer that shuts off the charger socket after 20 minutes or so. I know the CTEK charger gives a flashing green light whenever the battery is no longer detected.

1) Ignition key to off position, charger unplugged from wall.
2) Plug charger into charger socket located in passenger side.
3) Turn ignition key to 'on' position. Key must be in the car when turning the ignition to the on position. Do not stand outside the car with the key in your pocket. Otherwise turning the key attached to the car has no effect.
4) Plug charger into A/C outlet.
5) Turn off ignition AFTER 1 to 2 minutes. Charge shutoff circuit will be disabled and charger will work fine.

The above procedure allows the 992 to recognize the charger and will disable the power socket timeout.

JuanilloTurboS

Joan... Thank you!

Joan Alcover

BMG / NHDQ
Be My Guest / No Hay De Que.

digits

I had trouble with my Porsche Charge-o-mat pro disconnecting (it was plugged in to the passenger footwell) and I just resorted to driving the car around to keep the battery charged. Hey - it was great excuse to drive it!

I had also ordered a CTEK Lithium US charger thinking that I'd just connect it directly to the terminals, but yesterday I tried it for the first time plugged into the 12v footwell socket (I had the sold-separately 12v socket adapter) and I followed the instructions above. It worked!

I'm guessing the that trick is leaving the accessories on for a couple minutes before turning off the car and locking the door - maybe the chargers go through an initial sequence to monitor the battery capacity and if you turn off accessory power too soon the car hasn't seen the charger actually begin charging (just a guess) and then the car winds up disconnecting the footwell socket.

I'll try my Porsche-branded charger again in the footwell socket but this time I'll follow those instructions to see if it also works and report back.

JuanilloTurboS

Follow the steps outlined from Joans post.... so far so good. Just got home , same as when I left.

digits

I followed the above procedure with the Porsche charge-o-mat pro in Li-Ion mode and checked back after about 30 minutes to find that the charger had turned itself off just like before. I guess I could try again and perhaps NOT lock the car but... nah. I'll just stick with the CTEK Lithium US since, for me, it works in the footwell socket.

Tom M'Guinn

I tried all the tricks I found posted here, and couldn't get the cigarette socket to stay active. Maybe with more patience and effort, I could find just the right sequence, but it already felt like more effort than can be reasonably expected, so I ordered the battery clamps and just use them if the car is going to sit a while. On my other cars, I added wires to the power posts and have the connector poke up at the base of the windshield. If I get to the point where I need to trickle charge this car routinely, I'll just do that.

RD16RR

Without a doubt, pop the hood and plug it in or use the clamps - easy as pie

If you're lucky you'll find a Battery Tender at Costco for $49 LifePo4 4.5amp - otherwise its typically $79 for the LifePo4 4amp direct from Deltran

​​​​​​​​​​​​https://www.batterytender.com/Batter...-12V-4A-Select

motown

Even though I charged my battery full the low battery notification wouldn't clear so I service it. They could clear it either. They ordered a new battery since the electronics sending the message is part of the battery now.

He said it is a 3,400 battery so glad warranty is covering it.

What a deal.... note to self... don't fiddle in a non running car setting your car personalizing it for 45 minutes.

JuanilloTurboS

$3400.00 for a battery???😳😳😳😳

Bluehighways

Note to self: When purchasing a 911 DO NOT get any configuration that requires the Li Battery! That is just stupid money. For what benefit?