tomo Posted 1April, 2021 Report Share Posted 1April, 2021 Just wondering how long you guys are getting out of your battery in your 996 after a full charge and no driving ? My battery is 74 A/H recommended is 80A/H me thinks . A Month, Week, or a couple of days . Battery is fairly new. So fess up how quickly does your 996 suck the life out of it? Quote Link to comment Share on other sites More sharing options...
Raven Posted 1April, 2021 Report Share Posted 1April, 2021 My 997 would suck the life out of battery quickly if not used ,,, around 14 days on a fully charged battery if I didnt drive it , If you put it on a trickle charger in between drives you will get long battery life , I got over 4 years out of my last battery on a trickle charger ....I just have one of the CTEK trickle chargers ,I would put it on if I was not using the car every couple days .. tomo 1 Quote Link to comment Share on other sites More sharing options...
Carrera28 Posted 1April, 2021 Report Share Posted 1April, 2021 57 minutes ago, tomo said: Just wondering how long you guys are getting out of your battery in your 996 after a full charge and no driving ? My battery is 74 A/H recommended is 80A/H me thinks . A Month, Week, or a couple of days . Battery is fairly new. So fess up how quickly does your 996 suck the life out of it? My personal experience is that I neglected a brand new battery and in around six months it was dead and needed to be replaced. Now my 996 sits on a CTek trickle charger for most of its stationary life. I have fitted the CTek plug to the battery so its a 5 second job to plug it or unplug it. I recently left mine parked interstate for a month and it started perfectly when I tried. So I guess my experience is somewhere between 1 month and 6 months between no problems and failure. tomo 1 Quote Link to comment Share on other sites More sharing options...
Costas Posted 1April, 2021 Report Share Posted 1April, 2021 You should get 1 to 2 months out of it if the battery is reasonably new. My current battery has lasted just over 10Yrs and still turns over the M96 well. It has had an easy life though and is always on a mtce charger when the car is not in use and never kept at a high float voltage for extended periods. The battery is actually calcium based unit and I keep it trickle charged to only around 80-90% capacity (ie never fully charged) rather than keeping it at 100% float voltage. Lead acid batteries really hate being discharged to mid/low capacity levels so ideally you want to keep it on a mtce type charger if you will not be utilising the vehicle for days on end. tomo 1 Quote Link to comment Share on other sites More sharing options...
911CSR Posted 1April, 2021 Report Share Posted 1April, 2021 I just switched from a Braile AGM battery to a Lithiumax Restart9 battery. Braile would last a maybe 2 weeks without use before being lazy to start. The Lithiumax seems to be holding charge better/longer so far. As I am no longer runnign car every day, I have a NOCO charger through the OBD port for when the car isn't used. The Lithuimax is also smaller and much much lighter than the stock battery. tomo 1 Quote Link to comment Share on other sites More sharing options...
tomo Posted 1April, 2021 Author Report Share Posted 1April, 2021 9 hours ago, 911CSR said: I just switched from a Braile AGM battery to a Lithiumax Restart9 battery. Braile would last a maybe 2 weeks without use before being lazy to start. The Lithiumax seems to be holding charge better/longer so far. As I am no longer runnign car every day, I have a NOCO charger through the OBD port for when the car isn't used. The Lithuimax is also smaller and much much lighter than the stock battery. Cheers thanks for the info, But how many A/H is Battery Quote Link to comment Share on other sites More sharing options...
tomo Posted 1April, 2021 Author Report Share Posted 1April, 2021 Will check if the altinator is charging to day and start from there, hopefully its the battery, Thanks for the input. Quote Link to comment Share on other sites More sharing options...
Costas Posted 2April, 2021 Report Share Posted 2April, 2021 Just use your dash voltmeter gauge as a guide. With ignition ON but not started - your voltmeter should read approx 12v. With the engine running the needle should be up close to 14V if the alternator is working. Here is the label on my battery - Note that this battery is longer than what was supplied with the vehicle when new. You can see that this Bosch battery is a 85 Amp Hour unit - I recall that I did go for a larger battery over stock when I fitted this one but it was so long ago that I cannot recall the stock battery specs. All I remember is that I had to use the battery tray's very outer hole (for the clamp) to get it to fit due to the extra length. tomo 1 Quote Link to comment Share on other sites More sharing options...
tomo Posted 2April, 2021 Author Report Share Posted 2April, 2021 Thanks@Costas yes I see what you mean with the extra length, Good tip with the gauge, Had a electrical hitch at the lock up, The bloody keypad would not open the door so could not get to my tools, My battery is a Varta silver 74 A/H and only 10 months old, 6 a/h short on the recommended 80, Can build and engine blinfolded but bloody electical stuff bloody hopeless , DOH ! The car has been a treat but went flat after 5days with afull charge and a 2 hr drive, And according to your quick gauge test the battery must be kaput thats promising will get it sorted to day Quote Link to comment Share on other sites More sharing options...
tomo Posted 15April, 2021 Author Report Share Posted 15April, 2021 My new Ctek charger has reconditioned the battery to it former glory, The culprit was a incorrectly attached terminal, something I did not think I would have to check after a major service where it says on the invoice "battery and conections checked " Well you can take that with a grain of salt, Back to servicing the car meself .:) luzzo and Costas 1 1 Quote Link to comment Share on other sites More sharing options...
911CSR Posted 19April, 2021 Report Share Posted 19April, 2021 On 02/04/2021 at 00:35, tomo said: Cheers thanks for the info, But how many A/H is Battery Sry...68Ah EqPb lead-acid/AGM/GEL equivalent and 900CCA tomo 1 Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.