Actually the 2C rating is a potential maximum thing. Like the 20 Amp circuit breaker in your house. You can safely use less than full power, but twice the rating (about six Amps) will 'trip' the protection circuit in the battery protecting it from trouble, like in the event of a short. Discharge ratings under 2C, or 2C batteries of lower capacity (a 2000mAh version would trip at four Amps for instance) won't cut it.
But the fatal problem with this battery is the top. To get the last little bit of volume (for a tiny bit more capacity) that was sacrificed.
It's important to remember TV has computers with search engines too. I's a 'lead pipe cinch' they considered this guy and found the one they're using to be better for some reason. They are offering the best made base battery they can find (Japanese, go figure....) and having the protection circuits, packaging and testing done down the street, not only Domestic labor, but giving them excellent control of the end product. They are literally built to TV specifications for this job. IMO others will do fine, but the factory one will excel if even by a little bit. We'll no doubt come up with good alternatives to consider as members get the Cera and use it.
By way of 'inside information' I was given 3 different batteries to try, color coded. So far two seem about the same, one is a bit weaker I think, the blue one went flat on me at about the same point in testing the other two were starting to get 'a little weak'. Rather than buy two $20 batteries to save money I'd suggest getting one of the $25 recommended ones and a 'lesser but useful' one to use while the main one charges? It will go over half an hour, which is a LOT of vaping with this guy. BTW, I note the battery in the photo is blue, I wouldn't put any stock into that WRT the color coding on the ones I got.
OF