12v cigarette plug-in won’t stay live

[klee168168]

I tested the 12v in my trunk today. Owners told me that the 12v in the v8v it is always live. I tried a phone charger but could not get it to stay on. It would turn on and off. I tried rotating it and everything but nothing worked. The wires look clean and intact behind it. Anyone else have issues?

Edited by klee168168 on Saturday 2nd February 03:22

[DB9VolanteDriver]

It's the plug, not the socket. Plug in CTEK, see light is on, don't touch the plug.

[klee168168]

How do you know it is the phone charger that is faulty?

Does the ctek cig adapter have a light to show that it’s live?

The CTEK was ordered and shipped today. Is the CTEK a device where you plug in 24/7 or do you actually have to monitor it and when it is fully charged, then you have to disconnect it? I.e. is there any harm to the battery by leaving the CTEK connected all the time?

Edited by klee168168 on Saturday 2nd February 03:47

[hornbaek]

The CTEC is a trickle charger and will only top up the battery when needed. I will lay idle for the rest of the time so you leave it attached continuously. The only thing you have to check is that the socket you are using on the car is live permanently ( and doesn’t switch off after you lock the car ). The CTEC will indicate whether it is live and charging).

[rallymaster123]

I had this exact problem. Waiting to take the car back to the dealer to have a fuse replaced. They said it's not a fuse in the fuse box but an isolation fuse behind the battery. I've been charging using the post in the engine bay in the meantime.

[klee168168]

Is there a button your press to toggle between different modes? I.e. charge a dead battery vs maintain a new battery? My car will not start but I get lights that come on so there is some juice left. So I’m hoping the ctek can charge it enough to revive it.

I don’t know if it will work though. Anyone try this before?

Edited by klee168168 on Saturday 2nd February 12:50

[cayman-black]

If there is any life left in the battery the C-tek will sort it out, put it on car mode and it will do the rest!

I leave mine connected permanently.

[klee168168]

cayman-black said:

If there is any life left in the battery the C-tek will sort it out, put it on car mode and it will do the rest!

I leave mine connected permanently.

In the car mode, do you have to differentiate between AGM battery and non-AGM battery?

[Ilovejapcrap]

My mate had a Ford with two slots for a certain fuse, one made it go on and off with ignition, one made it stay on

[rallymaster123]

Yes. You want non-AGM I think.

[cayman-black]

rallymaster123 said:

Yes. You want non-AGM I think.

^ This.

[Damianos]

Facing a similar issue with my '09 4.7V. I have the original AM charger permanently plugged in the boot outlet, and lately it has started acting up. I must plug it in very carefully for the charger lights to come and stay on, and even the slightest movement of the cable will make it loose connection.

Not sure whether the problem is with the socket on the car or the charger plug, obviously hoping for the later...

[davek_964]

Damianos said:

Facing a similar issue with my '09 4.7V. I have the original AM charger permanently plugged in the boot outlet, and lately it has started acting up. I must plug it in very carefully for the charger lights to come and stay on, and even the slightest movement of the cable will make it loose connection.

Not sure whether the problem is with the socket on the car or the charger plug, obviously hoping for the later...

I think it's the sockets. I use the cabin one for my '56 V8V, and I have to make sure the plug is well pushed in and doesn't move (I tend to tuck the cable between the side / front of the seat which seems to do the job).

[Damianos]

Actually will try to plug the charger in the cabin outlet to see if it works or not...Don't know why i didn't think of that before...

[klee168168]

It was just the test charger I was using that had issues. The actual ctek works.

What is the difference between step 7 and step 8? Mine has been green light on step 7 for a few days. It has not gone to step 8.

[DAMIT]

Read the Manual!

STEP 1 DESULPHATION
Detects sulphated batteries. Pulsing current and voltage, removes sulphate from the lead
plates of the battery restoring the battery capacity.
STEP 2 SOFT START
Tests if the battery can accept charge. This step prevents that charging proceeds with a
defect battery.
STEP 3 BULK
Charging with maximum current until approximately 80% battery capacity.
STEP 4 ABSORPTION
Charging with declining current to maximize up to 100% battery capacity.
STEP 5 ANALYSE
Tests if the battery can hold charge. Batteries that can not hold charge may need to be
replaced.
STEP 6 RECOND
Choose the Recond program to add the Recond step to the charging process. During the
Recond step voltage increases to create controlled gassing in the battery. Gasing mixes the
battery acid and gives back energy to the battery.
STEP 7 FLOAT
Maintaining the battery voltage at maximum level by providing a constant voltage charge.
STEP 8 PULSE
Maintaining the battery at 95–100% capacity. The charger monitors the battery voltage
and gives a pulse when necessary to keep the battery fully charged.

[klee168168]

Takes a long time to go from PULSE to FLOAT.

[V8LM]

10 days from 7 to 8 - https://www.ctek.com/storage/ma/b343d2275859476796...

[klee168168]

What is interesting is that I have been charging my battery for about 7 days now. Its been on step 7 for a few days. So I thought that means my battery can hold a charge. I skipped recond mode. I just tried starting it and although it gives me lights on the speedometer and radio, the battery will NOT start the car. How come the ctek says its on step 7 if it won't even start? If it were a defective battery that couldn’t hold a charge, it would not have passed step 2.

Edited by klee168168 on Sunday 10th February 18:32

Edited by klee168168 on Sunday 10th February 18:52

[V8LM]

Have you used the battery disconnect switch and forgotten to reconnect?