ain't that always true

But I think the transaction/sale date marks the start of the warranty period, not when/if they give you replacement(s).

Cue LL or maybe the noobie would-be Legal God CC?

 

A four year warranty is going to be contractual, rather than statutory. Therefore it's all in the small print.

Picking up on Gad's example, the original battery had a 4 year warranty and so as long as it or one of its many warranty replacements gets you over the 4 year mark, why is that not justifiable, even if only by one day? Having said that, the warranty may well extend for four years from the date of the replacement. Check the small print.

 

Thinking about it, that doesn't sound unreasonable.

The alternative might mean that I never have to buy a battery again.

Not much small print to be seen - you just get a cert of purchase attached to your receipt.

I guess the test would be to return a battery once the 'original' four years have expired

They write the date of the replacement on the original cert of purchase

 

That's certainly the way honda run their warranty.

They replace as many wheels as required during the 3 year warranty, but once out of warranty you're on your own.