Battery too dead to be brought back by trickle charger

[kingston12]

I went to my car yesterday to find the battery totally dead.

I connected my Porsche/CTEK charger to the cigarette lighter and the dash cam back to life and it started to charge. This has happened to me before and I know it takes a long time to get to a stage where the battery could start the car again. When I went back tonight to try it, the dash was off again and there was no life in it at all.

My first thought was that the fuse on the cigarette lighter circuit had gone. It looked fine, but I put a fresh one in there anyway. Still nothing.

It is possible that the charger has gone wrong, but it all lights up ok and I haven't got another car to test it on!

I'll replace the battery anyway, but I'd quite like to get this one going so I can go and pick up the new one and so I can open the front boot to put it in!

Anyone had similar?

[Legacywr]

A Ctek won't recover a fully discharged battery unfortunately, you'll need to use a proper charger.

[t400ble]

Why wont it?

Disconnect the dash cam though

[Legacywr]

t400ble said:

Why wont it?

Disconnect the dash cam though

I have no idea?

[footsoldier]

If you have leads, jump start it from another car, then leave it running for a while,
That will bring it back to life, enough for charger to work.
If it doesn't, your battery is dead.

[boxsey]

How old is the battery? If older than 4 years I would buy a new one rather than try and eek out a bit more life from an old one.

[kingston12]

Thanks for the replies. I just went out and tried it again and it started, so the charger must have been giving it some power, it just took a long time.

The battery is probably about 4 or 5 years old - it replaced the original Porsche one when this happened last time.

[kingston12]

The only problem I have got now is that the car has 'forgotten' that it has heated seats fitted, so I'll need to pay the OPC to do a handover again.