Here's what the PDF manual says about disconnecting and reconnecting the battery (page 281):

Hope that helps!

 

Make sure you get the correct AGM/ EFB battery and replacement is reasonably simple. You do need VCDS or similar to code the new battery to the car though.
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BTW, it will be either an EFB (Enhanced Flooded Battery) or an AGM (Absorbent Glass Mat) battery - it should say on the side of the battery. Neither are cheap, but both are designed to work with cars with a stop-start system. If you have an AGM battery from factory, then it's not recommended to replace with an EFB, but you can replace an EFB with an AGM (afaik - someone might know more?).

UK prices are around the £200-£220 mark for something like a Varta, Exide or Bosch, but you can find cheaper.

 

Hi All. to let you know, battery replacement on Skoda Kodiaq is streight forward, there were some warning light coming out after a swap, but just after turning steeringwheel all the way right and left, all lights turned off.

 

If you didn’t code in the new battery the BMS may not recognise that a new battery is fitted and will continue with the charging regime it had adapted to for the old battery and you may end up needing a new battery sooner than if it had been coded correctly.

 

That is the only issue we face or it could effect alternator too?