Mk4 Battery change

Needed to replace my battery could not find anything related to this in the hand book ,
So telephoned local Mazda dealership for Radio
Code because I needed to disconnect the battery and replace it , they informed last 4 digits of VIN , changed my mind and took it to the local battery specialist to be fitted with a new one , I asked about saving the code no need he said on newer vehicles , he was right and did not charge me for fitting unlike Halfords who where £20 dearer for a 2 years warranty battery but also wanted £18 to fit.
By the way my MX is 2018

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I’ll be interested to hear how your new battery holds charge over the Winter. If it gets really cold I still plug my 2016 ND in to the battery conditioner/trickle charge, as I had a couple of bad experiences, as I commented on under ice etc. The battery was tested and is fine. I took the ND out every day this week(after a lay off of several weeks and it started on the button - shame about the mud to wash off the bodywork!
Happy New Year all!

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No issues disconnecting an ND battery, I’ve disconnected mine doing various jobs plenty of times.

Hi Elaine
Will let you know after this winter , although I live in Devon on the coast so not a lot of frost .
I do not use my ND very much so I was wondering , can you leave the Batty disconnect for a long period with out the car losing its memory.

I wouldn’t recommend leaving the battery disconnected for long periods of time, if possible its much better to have it on a maintenance charger. I too don’t use my ND very much, especially in the winter so it often sits on its CTEK charger in the garage (where it is now).

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Never dared try it! Suspect it would cause more probs than enduring the loss of charge, which seems so bad in cold weather. I live in a frost pocket on a very small hill with winds from Siberia - I keep a little, safe oil filled heater near the car in the garage! I too use my trusty CTEK to alleviate the effects of the East Anglian climate on my MD.
Cheers.

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