14.8 must be while engine is running that's too high for just a battery on its own.

Anything from 12.5 to 13.8 is a healthy voltage for a battery. Lower is a problem especially if it drops a over a short time like over night. Leaving it flat is the worst thing you can do.

Don't want to hijack this thread but my 67 plate L&K is currently on charge.

Went out this afternoon to discover that my Skippy didn't want to start.  The instruments lit up and the two main gauges did the normal sweep.  Then a half-hearted attempt at cranking and nothing.

Tried twice more and then errors galore.

Battery warning, airbag warning, ACC warning, Park Assist warning.

I've had the battery on fast charge for a couple of hours and managed to get her started.  According to my OBDeleven, there were 22 faults.  All cleared now thankfully.

So she's now on a trickle charge for the night and first thing Monday morning she'll be booked in to the dealership.

I realise that batteries can fail so i'm hoping that this is the case.

Highly likely the low voltage caused the errors and warnings rather than the other way around.

3 hours ago, BigEjit said:

Really need to ensure the battery fully charged. An hours run time probably isn’t enough and can cause longer term damage internally if left too low for too long. If stop/start is working regularly, it’s sufficiently charged. 

Stop start has been permanently disabled on my car. Going for a run up to central London tomorrow from Folkestone so that should give it a good chance to charge

Good luck with that. First I've heard that stop/start can be disabled permanently. 

On 01/03/2018 at 13:00, Bigtow said:

just gone to get something out of my car and the battery is flat as a pancake won't even unlock on the remote. nothing has been left on like the lights and the dash cam is connected to the switched feed in the fuse box. seeing as these cars are very computer based is there anything I need to watch out for if I get a jump start also how do I unlock the passenger door to pop the bonnet if the battery is that flat?

@BigtowIs your vin in the range 

 

TMB___NE_G0006110 to 180461?

 

there is a service campaign regarding energy management - might not be relevant or applicable. 

 

Campaign = 90K1 2047817/4

 

 

Edited 5 March, 20188 yr by Rybu79

17 minutes ago, gregoir said:

Good luck with that. First I've heard that stop/start can be disabled permanently. 

 

Basically using VCDS or similar you set either the temp or voltage max parameters to the max setting....thus forcing the s/s system to not activate as the operation parameters have not been met...

This is not smart.

 

Tried to check the car during lock-down

 

Same problem. Opened the driver door with key.

 

On my (UK) Octavia, the bonnet/hood release is on the LEFT (passenger door).

The release will not work until the door is open.

The door will not open because the battery is flat and the central locking is therefore no good.

 

Waiting for the Skoda Assist man to come and try!!!

48 minutes ago, Roboscot said:

On my (UK) Octavia, the bonnet/hood release is on the LEFT (passenger door).

The release will not work until the door is open.

Others owners have found that with a bit of effort (and strong nerves) you can bend the bonnet release handle enough to be able to open the bonnet even with the passenger door locked - which is probably what the Skoda Assist man will do!

Can you not open the driver door with a key then climb across to open the pas door? 

32 minutes ago, PetrolDave said:

Others owners have found that with a bit of effort (and strong nerves) you can bend the bonnet release handle enough to be able to open the bonnet even with the passenger door locked - which is probably what the Skoda Assist man will do!

Yep, done that. The handle is designed to be bent this way and will go back normal shape. 

 

Mark, the car disables internal door openers when you lock your car. 

You can attach a battery charger to the 12v aux socket.

 

Or remove the handle.

 

The Skoda Assist man did exactly what PetrolDave suggested.

 

Unfortunately I do not have the build or agility of a limbo dancer.

 

I don't think this process was designed for an arthritic septugenarian.

 

I plan to try to rig up an assist with cable-ties!

 

I'll also keep a plug for the lighter socket so that I can hang the battery charger on to at least get the central locking to work.

 

 

(bring back the starting handle!)

 

Watch this sp ace

 

 

I thought a car battery was lead acid until I saw this thread, AGM batteries? Never heard of them, so had a search and found this:

https://www.knowyourparts.com/technical-resources/blog/three-misconceptions-agm-batteries/

 

For those of us 'older' drivers I found this quite instructive,

14 hours ago, ajw1100 said:

I thought a car battery was lead acid until I saw this thread, AGM batteries?

AGM & EFB batteries are still lead acid but with a different construction.

On 31/03/2020 at 19:54, ajw1100 said:

I thought a car battery was lead acid until I saw this thread, AGM batteries? Never heard of them, so had a search and found this:

https://www.knowyourparts.com/technical-resources/blog/three-misconceptions-agm-batteries/

 

For those of us 'older' drivers I found this quite instructive,

My mechanic told me recently that he charges any type of battery with a normal charger nothing specific to agm or stop start types. My car has EFB type. I've a bog standard charger from halfords that does do a trickle charge at the end. Is this ok to use on it if the need comes. 

Following the problem of opening the bonnet.

 

I have installed this cunning device.

 

1) Drill small hole through the bonnet release lever.

2) attach a decent-sized cable tie through the hole and round the lever

3) Attach an industrial-strength cable tie through the "anchor" tie and adjust length to match arm length and agility.

 

This way the bonnet can be opened from the driver's seat.

 

Feel free to copy without licence payment!

On 01/03/2018 at 14:49, maul said:

I'd be amazed if a Bluetooth  device could flatten your car battery that fast most of us leave Bluetooth on on our phones all the time with negligible difference. Unless you had a fairly flat battery to start with.

The Carista device I used to use drained my battery, whilst using it I got the battery warning to charge vehicle by driving.