Which Ctek for GT3 991.2 - Page 2 - Porsche General - PistonHeads UK

Hi Anyone got a link for the correct Ctek charger for above.Can you get one that just plugs into the cigarette charger.Cheers.

Mxs 5.0

Porsche911R said: Mxs 5.0 Does that plug into the lighter socket

They make lots of options, but I always use a fixed battery lead as do Porsche. never fancy the lighter socket route myself.

Porsche911R said: They make lots of options, but I always use a fixed battery lead as do Porsche. never fancy the lighter socket route myself. Cheers, wasn't sure whether the lighter socket turns off after so long.

Melvynr said: Cheers, wasn't sure whether the lighter socket turns off after so long. Some do some don,t I not fancy running the power and heat thought that very cheap socket and bell wire.

I use my CTEK via the 12v socket in the passenger footwell and it works perfectly. You can close the door without damaging the cable. Ignore any comments about cheap sockets and bell wire. The 12v accessory sockets are rated at 20amps and are therefore wired and fused appropriately. The maximum output of a MXS 5.0 is 5 amps.

Paul_M3 said: I use my CTEK via the 12v socket in the passenger footwell and it works perfectly. You can close the door without damaging the cable. Ignore any comments about cheap sockets and bell wire. The 12v accessory sockets are rated at 20amps and are therefore wired and fused appropriately. The maximum output of a MXS 5.0 is 5 amps. Why not put the lead you get free with it on the battery, all OPC do it correctly, I don’t get the need to do it via a 12v socket anyway. Also the lead has lights, so you know when it needs charging.

Porsche911R said: Paul_M3 said: I use my CTEK via the 12v socket in the passenger footwell and it works perfectly. You can close the door without damaging the cable. Ignore any comments about cheap sockets and bell wire. The 12v accessory sockets are rated at 20amps and are therefore wired and fused appropriately. The maximum output of a MXS 5.0 is 5 amps. Why not put the lead you get free with it on the battery, all OPC do it correctly, I don’t get the need to do it via a 12v socket anyway. Also the lead has lights, so you know when it needs charging. Because opening the passenger door, plugging in the charger, fully closing the door and then locking the car is by far the quickest and most convenient way to do it. The ‘comfort lead’ you get when you buy a normal MXS 5.0 or 7.0 does not have lights to show when it needs charging. That is an optional accessory. I personally DID connect the supplied ‘comfort connect’ lead to my battery and earthing post when I got the charger. But I never use it, as it’s not the most convenient method, and certainly on my car you cannot fully close the bonnet with the charger connected without nipping the cable.

Thanks a lot guys, will get one sorted out.Cheers.

Another vote for MXS 5.0. Have plugged into footwell socket for years with no issues (various Caysters)

Handbook says you should connect to the terminals under the bonnet....requires removing the plastic covering which takes about a minute. Given that’s what the people that designed and built the car recommend that’s what I do

Paul_M3 said: Because opening the passenger door, plugging in the charger, fully closing the door and then locking the car is by far the quickest and most convenient way to do it. The ‘comfort lead’ you get when you buy a normal MXS 5.0 or 7.0 does not have lights to show when it needs charging. That is an optional accessory. I personally DID connect the supplied ‘comfort connect’ lead to my battery and earthing post when I got the charger. But I never use it, as it’s not the most convenient method, and certainly on my car you cannot fully close the bonnet with the charger connected without nipping the cable. My sockets go dead after a few minutes,

Melvynr said: Thanks a lot guys, will get one sorted out.Cheers. Of you connect to the battery which I always do connect the earth to the chassis not the - post on battery on 991 gen and newer. It’s something to do with the car’s way of monitoring battery management. It’s been covered in here before. Edited by David W. on Monday 12th October 08:39

MX 3.8 is absolutely sufficient and cheaper than the 5.0. In fact I cannot really see any difference, other than price.

So hardwired the Ctek to the battery terminals as the length won't allow you to use the neg charging post. Looks like working perfectly, on number 7

Bit of a thread resurrection but can anyone advise which setting I should be using on the MXS 5.0 for a 991.2 GT3? There is the normal car battery program or an AGM option… Thanks in advance!

Mr Moley said: Bit of a thread resurrection but can anyone advise which setting I should be using on the MXS 5.0 for a 991.2 GT3? There is the normal car battery program or an AGM option… Thanks in advance! Page 4 of the instruction manual says Normal Battery Program "suitable for WET batteries, Ca/Ca, MF, GEL batteries and many AGM batteries " Whereas the AGM section mentions it's for 'most AGM batteries like Optima & Odyssey'. Like you, I wondered which option to use on my 981 CGTS which is AGM. I got different answers depending who I asked, including a reputable Indy. Even contacted cTEK customer support, but they advised to contact the OEM. Page 5 explains the differences between the charge types.

Thanks for the input So which did you end up using?

Use the normal one myself, on account of 1) it's better to put slightly less voltage through a battery than too much, 2) Optima or Odyssey batteries seemed more suited to caravans, 4x4 & the marine market

SV_WDC said: Use the normal one myself, on account of 1) it's better to put slightly less voltage through a battery than too much, 2) Optima or Odyssey batteries seemed more suited to caravans, 4x4 & the marine market Noted - I’ve changed it to the normal setting - both seemed to work! Thanks!

I connect my .2 GT3 to the passenger footwell and it works fine. You need to turn the ignition on, then off and then the socket stays live for a couple of minutes for you to connect and then switch on the charger. I have noticed that if there is an interruption in power (say power cut for example), then if the socket receives no power it will eventually switch off so when power is restored the socket won’t then receive charge.