Recently after leaving my car unused for a few days, when I gave pressed the unlock button on the key fob, a loud intermittent bleeping like the burglar alarm has started which lasts for about a minute then stops. It then starts again and goes through the same stop/start cycle repeatedly.

It eventually stops after about 5 mins of driving and I was wondering whether it was telling me that the battery was knackered.

I have had knackered batteries in the past and not had this bleeping business.

The current battery is about three years old and so may be starting to decay.

Any thoughts on the cause of the bleeping/alarm. 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

I've never heard of this before and never had it on any of mine. If the battery was goosed I doubt it would use more juice to tell you it was goosed.... Discovery 4 HSE
1998 110 TUM HS FFR Hard Top XD WOLF
1982 Series 3 Hard Top

*Gone:L462 D5 HSE LUX, L663 Defender 110 HSE, Discovery 3 HSE, 2014MY Range Rover Sport 5.0 Supercharged AB Dynamic; L405 Exec Vogue SE 4.4, 5.0 Supercharged Autobiography, Defender TDCi XS CSW, Defender TD5 HT, Vogue SE TDV8, Vogue TD6, RRSport SC 4.2V8, Classic 3.9 Vogue Auto, Land Rover Series 3 SWB

Agree and it never happened with previous dying batteries. It could be something to do with the burglar alarm which is all completely beyond me. 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8

Sounds alarming.....

But seriously, sounds more like a problem with the alarm than anything else, have you tried a battery reset. Seems to always be a good place to start. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Yep

That is the battery

I have had it about 3 or 4 times

It get worse and then the car won't. Unlock anymore

In the past i tried to recharge the battery etc but now i know it has no sense in doing so and replace the battery
You will only buy days not weeks

Done the battery reset as suggested. No reoccurence yet!!! 2014 5.0 Supercharged Autobiography & 2015 3.0SDV6 HSE Lux Discovery 4
2005 4.2 Supercharged Vogue SE & 2011 3.0SDV6 HSE Discovery 4
2002 4.4 Vogue
2000 4.6 Vogue
2010 Freelander 2 TD4 HSE
2009 Freelander 2 TD4.e 2009
1992 Mercedes 300D
1986 Renault 2.1 Turbo D
1976 Morris Marina 1.8