Just seen this on youtube
 Range Rover Sport (gone): Mercedes S63 AMG Coupe: 992 Porsche Carrera 4S: Range Rover Fifty P400e

Yep, you can now buy batteries with the technology built in

Unfortunately Powerful are out of stock

If you have a fee free card you can get them direct from here
https://smartkeylessprotector.com/en/ 2015 L494 SDV6 3.0 HSE Loire Blue
2006 L320 4.2 Supercharged
2009 BMW X5 M-Sport - Gone
2007 L320 2.7TDV6 SE Buckingham Blue - Gone
2011 Jaguar XFS 3.0V6 Diesel - Gone
2009 (59) L320 Facelift 3.0TDV6 HSE White Wrap - Gone
2008 BMW X5 M-Sport - Gone
2005 Audi A6 3.2V6 Quattro S-Line - Gone

Saw the video yesterday morning, went on their website and just the electronic bit and no batteries were out of stock.
Added my email to be informed when next in stock and within two hours had an email.
Ordered straight away and should be delivered by Friday

Could be the answer a few of us were waiting for.

I will also try out a CR2025 battery as that will be thinner and will fit in the space more easily. This will have a slightly smaller mAh capacity, but if I am saving energy hopefully it should last the same amount of time or even longer "Every Day is a School Day"

Now 2014MY RRS SDV6 AB
Now 2018MY Ford Fiesta ST Line 140bhp
Gone 2006MY BMW X5 3.0d Le Mans
Gone 2001MY BMW 530d Estate

Having signed up for the free "battery" from JLR with a 6 month lead time, is this the same as these or something different? MY17 RRS 4.4d V8 Autobiography - Aintree Green (also referred to on Topix as British Racing Green)

this seems to be a great idea , and according to the video it works ,, may even buy one meself
but i have one question ...
once your in your car and driving along , would the keys not go to sleep
and then get a warning on dash saying "cant find smart key"?

k

Not while the engine is running.

If you stop the engine, you may need to giggle the keys.

I assume start/stop is ok. But don't know for sure