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Wiring on new battery.

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Why would a Skoda Dealer connect my new battery with the blue wires to the positive terminal and red wires to the negative terminal. I am not colour blind and this was done yesterday. I am returning to the Dealership this morning.

Are you saying the battery has been connected backwards? If so, nothing would work... 🤔

 

Got a picture to explain the problem more clearly?

  • Author

It appears to me that the wiring to the positive terminal is blue wires. Whereas the wiring to the negative terminal at the rear is red wires. The warning flap now covers the positive terminal whereas on the old battery this flap was at the rear covering the negative terminal.

 

I would welcome your comments.

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  • Author

The more I look at these photos the more I think I've made a fool of myself before I returned to the Dealer. Thank the Lord for this forum. Thanks for looking.

Looks fine to me.

 

The two little wires on the negative terminal are for the battery monitoring system. The actual negative wire is much much larger, like the size of a finger...

 

As for the positive terminal, the main power for the car goes down the side of the battery from the exposed metal connector you can see. The smaller green and black wire are not standard. Somebody has added something that needs a power feed and used whatever colour wire they had to hand. I have no idea what they'll be powering but I'd check they are fused as the battery can easily melt (fire!) them if a short occurred :)

  • Author

Many thanks langers2k. I think those additional wires might be for towing electrics which I had fitted when I bought the car new.

You could always buy a new either plain or one with a bit red + plastic cover for the +ve battery post and move that one to where it is intended to be on the -ve battery post.

 

My wife's 2015 VW Polo was sold to her with no battery post covers, so I ordered up a couple amongst a few other bits VW ZA chose not to fit to it!

 

Edit:- I'll bet buying that genuine VW branded Varta AGM hurt your wallet quite a bit, how old was the original and was it an EFB or AGM?  I have just bought a new Bosch AGM for my S4 and that is 10 years old and I'm just being cautious it is a 92hr 850Amp EN CCA and it cost £156 and manufactured by Varta.

 

Edit:- one other thing, from your photos of your battery installed in your car, the top of the +ve post is exposed and will remain exposed even if you buy a second post cover and swop them over, my wife's 2015 VW Polo has a removable shaped black plastic cover that covers that area of the +ve battery post up and so along with the usual flat cover, completely covers up the +ve battery terminal and lead - which in my mind is always a wise thing to do to protect the +ve or "high" battery terminal until that lead has been protected by fuses further along the system.

Edited by rum4mo

Do you have stop start? Only reason to have installed an agm battery

20 minutes ago, foru2justnv said:

Do you have stop start? Only reason to have installed an agm battery

 

You can see the battery monitoring device on the negative terminal, this is only fitted on cars with stop/start so I'm guessing yes ;)

  • Author
On 04/03/2021 at 10:56, rum4mo said:

You could always buy a new either plain or one with a bit red + plastic cover for the +ve battery post and move that one to where it is intended to be on the -ve battery post.

 

My wife's 2015 VW Polo was sold to her with no battery post covers, so I ordered up a couple amongst a few other bits VW ZA chose not to fit to it!

 

Edit:- I'll bet buying that genuine VW branded Varta AGM hurt your wallet quite a bit, how old was the original and was it an EFB or AGM?  I have just bought a new Bosch AGM for my S4 and that is 10 years old and I'm just being cautious it is a 92hr 850Amp EN CCA and it cost £156 and manufactured by Varta.

 

Edit:- one other thing, from your photos of your battery installed in your car, the top of the +ve post is exposed and will remain exposed even if you buy a second post cover and swop them over, my wife's 2015 VW Polo has a removable shaped black plastic cover that covers that area of the +ve battery post up and so along with the usual flat cover, completely covers up the +ve battery terminal and lead - which in my mind is always a wise thing to do to protect the +ve or "high" battery terminal until that lead has been protected by fuses further along the system.

The battery was original, 2014, came with the car. Am happy to have paid almost £250 for a made in Germany Varta AGM. I now have peace of mind.

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