Notices
991 GT3 GT3RS and 911R
Sponsored by:

Battery problems

 
Old 04-10-2019, 12:03 PM
  #1  
saildoc
Addict
Rennlist Member
Thread Starter
 
Join Date: Mar 2017
Posts: 45
Default Battery problems

Twice now I have come out to find my 2018 GT3 with a flat dead battery. I have a tender installed but forgot to plug it in and it was dead after two weeks. I do have a Uniden R3 direct wired in the over head light terminal. I make sure to turn it off when I stop the car. Is this a typical experience?
saildoc is offline  
Old 04-10-2019, 12:47 PM
  #2  
skxf430
Addict
Rennlist Member
 
skxf430's Avatar
 
Join Date: Jan 2006
Location: West Los Angeles
Posts: 1,280
Default

You must have another source draining your battery.
skxf430 is offline  
Old 04-10-2019, 12:52 PM
  #3  
n2cars
User
 
n2cars's Avatar
 
Join Date: Feb 2007
Location: Colorado/California
Posts: 965
Default

Do you have a USB cable attached to the center console? that drains the battery too
n2cars is offline  
Old 04-10-2019, 01:37 PM
  #4  
mwar99
User
 
mwar99's Avatar
 
Join Date: Jan 2014
Location: Northern NJ
Posts: 1,096
Default

Also, do you lock the car? I think that having the car locked can make a difference. Mine was good for at least 6 weeks with the car locked. The power ports had turned off and the car started, although the battery was weaker.
mwar99 is offline  
Old 04-10-2019, 01:44 PM
  #5  
SMGT3
User
 
SMGT3's Avatar
 
Join Date: Feb 2015
Location: Los Angeles
Posts: 232
Default

No tender for 8 weeks and started right up. Something else is draining your battery.
SMGT3 is offline  
Old 04-10-2019, 02:57 PM
  #6  
fast1
Super User
 
Join Date: Oct 2004
Posts: 3,493
Default

Originally Posted by saildoc View Post
Twice now I have come out to find my 2018 GT3 with a flat dead battery. I have a tender installed but forgot to plug it in and it was dead after two weeks. I do have a Uniden R3 direct wired in the over head light terminal. I make sure to turn it off when I stop the car. Is this a typical experience?
Definitely not typical. Everyone I know gets at least 4 years from their batteries, and those with tenders get up to 6 years. Was your GT3 custom ordered or did you buy from a dealer's lot? Sometimes a GT car will sit on a dealer's lot for many months, and not all dealers are conscientious enough to use battery tenders to keep the battery fully charged.
fast1 is offline  
Old 04-10-2019, 03:19 PM
  #7  
saildoc
Addict
Rennlist Member
Thread Starter
 
Join Date: Mar 2017
Posts: 45
Default

All my other cars do fine for weeks without a tender, the AMG's especially. My cayman will go dead after 6 weeks without a tender but this is pretty weird.
saildoc is offline  
Old 04-10-2019, 04:46 PM
  #8  
drdonger
Addict
Rennlist Member
 
drdonger's Avatar
 
Join Date: Feb 2015
Location: Dallas, TX
Posts: 1,694
Default

Originally Posted by saildoc View Post
Twice now I have come out to find my 2018 GT3 with a flat dead battery. I have a tender installed but forgot to plug it in and it was dead after two weeks. I do have a Uniden R3 direct wired in the over head light terminal. I make sure to turn it off when I stop the car. Is this a typical experience?
Antigravity Lithium battery. Keep reserve charge. Saves weight too. I had issues if I didn't drive for 2-3 weeks on vacation when my car was stock. I can leave it for as long as I want now. Problem solved.
drdonger is offline  
Old 04-10-2019, 11:22 PM
  #9  
ipse dixit
Super User
 
ipse dixit's Avatar
 
Join Date: Sep 2005
Posts: 6,445
Default

Originally Posted by saildoc View Post
Twice now I have come out to find my 2018 GT3 with a flat dead battery. I have a tender installed but forgot to plug it in and it was dead after two weeks. I do have a Uniden R3 direct wired in the over head light terminal. I make sure to turn it off when I stop the car. Is this a typical experience?
Maybe you actually own a Ferrari.
ipse dixit is online now  
Old 04-10-2019, 11:37 PM
  #10  
ONEOFEW
User
 
ONEOFEW's Avatar
 
Join Date: Apr 2006
Location: Sherman Oaks Ca
Posts: 93
Default

Originally Posted by ipse dixit View Post
Maybe you actually own a Ferrari.
Haha, partially true, back in ninties mid 2000 yes I would agree, also my 993 use to drain a good size battery in two or three weeks, but modern Ferrari's can sit for a month, no issues.
It's better to have it on a maintianer on cars which aren't driven frequently for the long term health of the battery .
But a 991.2 GT3 should not drain a battery in such a short duration, OP have your car checked.
ONEOFEW is offline  
Old 04-11-2019, 01:38 PM
  #11  
Antigravity
Premium Sponsor
Rennlist
Site Sponsor

 
Antigravity's Avatar
 
Join Date: Oct 2017
Posts: 525
Default

We have a cool product that can track this for you.... IT will show the drain on you battery and if you take off what is causing that drain it would show you.

But most the other suggestions the Rennlisters offered are on point. We deal with this subject alot being all we do is Lithium Batteries for Motorsports. The most often and highest parasitic cause drains nowadays are the Cameras, Radar Dectectors and the Chargers-USB and otherwise. Also when people add extra accessories to their cars they are often wired in wrong, and defeat the Cars built-in Battery management system that actually works very well to put most the cars to sleep with a low parasitic drain. The 991s are VERY good at putting the Car to sleep, and the batteries last very long. A 30Amp Hour Lithium Battery can last about 7 to 8 week in a stock GT3 without any accessories.... that is a for sure fact being I have that car and have been testing on it over a year and a half...

.


Antigravity is offline  
Old 04-14-2019, 09:27 PM
  #12  
Alfaholics
New User
 
Join Date: Apr 2019
Posts: 1
Default

My "18 GT3 has similar issues. Batter is less than a year old and dead. No ability to charge. My 19 GTS Targa hasn't had this issue. No accessories in car.

Options for non Li battery ?
Alfaholics is offline  

Thread Tools
Search this Thread

Contact Us - About Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: