F1 battery question

Does anyone know if pulling the crown out to stop the second hand prevents the battery from running down in a TAG Heuer F1? Specifically, the old CAH chronograph range?

I've heard differing information about different brands and models as to whether or not stopping the movement stops the battery from draining when a quartz watch is in storage.

Thanks!

Not sure, I see this a lot on eBay... I guess the thinking is that the hands aren't moving so less draw on the battery. Some of the ani-digi TAGs (F1 Kirum / Chronotimer) have sleep modes which are accessed by pulling out the crown, but you have to press the top pusher to activate the sleep mode.

A follow up question: do batteries really need to be changed by TAG in order to preserve the watch's waterproofing?

I'm awaiting delivery of a new, old-stock F1. The shop had used "a professional watchmaker from a jewellery" to replace its battery. I'm hoping the watch is still OEM waterproof...

I don't know anything about watches (except if I like the way they look). I wonder if I have been buying into hype by always sending mine away to TAG for new batteries. It's expensive to do, but more frustrating is the several months of time it takes to get the watch back.

Batteries do not need to be changed by TAG, but in order to preserve the waterproofing, the battery change should include new rubber seals and a pressure test. Most jewellers don't do this, so you need to take it to someone who will (i.e. a watchmaker, or TAG).

Yes, I think you're right. Got to be sure everything is in order.