I'm keen to avoid adding weight. Plus I dont tend to do long videos, just lots of shorter ones (track day sessions, karting sessions, etc). I want a couple of additional batteries to swap in when they get low.
There seems to be a plethora of 3rd party batteries on Amazon and the like, but I'm always dubious of cheap batteries. The only ones I've seen recommended are the Wasabi ones and they seem to all be US order.
Dog Cam Sports have "unbranded" batteries at half the price of official ones. Has anyone used them?