Disconnecting battery for a month

[abtx]

Should I disconnect battery on my Volvo if I won't be using it for a month?
Most articles say I should, but I've seen some warnings that this may require some things to be reprogrammed after battery is re-connected?

[cheshired5]

What is your model and year?

[DaveNP]

Maybe dependent on car make (OK Volvo) and model, but if the car and the battery are in good condition I wouldn't even think of it, I've just come away on holiday for a fortnight and left the V70 at home without a second thought and I'm confident it will start first time when I get home. If the battery is failing then perhaps now is a good time to take it out, and put a new one in when you get back, if the car has a parasitic drain that will drain the battery in a month perhaps now is a good time to get that sorted. But other than that I could foresee that taking the battery off for a month would result in all of the clever systems losing any stored data and having to start again from factory default settings.

[Simon Jones]

If it's parked on a driveway you could always connect up a trickle charger if you're concerned about it loosing charge.

[abtx]

Originally Posted by cheshired5

What is your model and year?

It's a s40 late 2007 facelift model

[cheshired5]

Originally Posted by abtx

It's a s40 late 2007 facelift model

Pretty sure they can need a full software reload if left without power for a prolonged period.
With that model, I would maintain a power supply.

[abtx]

Originally Posted by cheshired5

Pretty sure they can need a full software reload if left without power for a prolonged period.
With that model, I would maintain a power supply.

Thanks cheshired5,

the battery is in good condition, will try leaving it as is then.

[noscralc]

Originally Posted by Simon Jones

If it's parked on a driveway you could always connect up a trickle charger if you're concerned about it loosing charge.

what about a solar powered trickle charger plugged into the cig lighter-got one a while ago from aldi-about 15quid if I remember---does the job on my mostly parked up classic.

[noscralc]

Originally Posted by noscralc

what about a solar powered trickle charger plugged into the cig lighter-got one a while ago from aldi-about 15quid if I remember---does the job on my mostly parked up classic.

if your cig lighter is only live with the ignition on then there are leads to connect straight on your battery---with mine anyway

[abtx]

Originally Posted by noscralc

if your cig lighter is only live with the ignition on then there are leads to connect straight on your battery---with mine anyway

That's a good idea, will have a look for one, thanks