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Battery Change - Chris7
Is it possible to change a car battery without the need to re-program radio/alarm etc. If you used say an Airflow Battery Conditioner on the disconnected live and earth cables before disconnection and during, would that be enough to hold the codes for the radio etc, reconnect the leads and then remove the Airflow cables, all codes intact???
Battery Change - the original horse
you can purchase a "code saver" it plugs into cig lighter.
Battery Change - henry k
you can purchase a "code saver" it plugs into cig lighter.

>>
Yes. I bought one for peace of mind. It worked well. Easy to use.

Google "Draper 38330 " for details and pic of one common type.

I bought mine, "a distress purchase", in Halfords for a lot more than shown on the above search.

Beware of US versions
www.bizrate.com/automotiverepairtools/oid471774329...l
as there is slight differences is cig lighter sizes and a loose fitting would rather defeat the object.
Battery Change - Cliff Pope
I have done it with some nifty work with jump leads, always keeping at least one battery connected at all times during the swap.