Non OEM batteries and Intervalometers

[satans worm]

So I need to buy a couple of items, bring 2 spare batteries and a intervalometes ( actually I need a lot of other stuff, but will start another thread if needed) for an upcoming trip, seems non OEM are a fraction of the price of the canon ones in both cases.
Is there any catch with this, or is it canon just charging more because they are the official supplier?
or are these things just a false economy?

[satans worm]

Thanks, good to know, will push ahead with the 3rd party version.

Any thoughts on the intervalometers?

Any recommendation on what to look for ?

Is it worth buying a fully remote one as opposed to a connected version?

[satans worm]

Ok so I ordered 2 new batteries (non OEM) and got the gig a pro intervalometer.
Have also got 2 breakthrough ND filters( 3stop and 6 stop), next on the shopping list carbon tripod......