BETAFPV4pcs BT2.0 550mAh 1S Battery 3.8V 40C/80C Lipo Battery with BT2.0 Connector Compatible for 75-85mm 1S FPV Racing Whoop Drone Quadcopters Like Meteor75 Pro FPV Drone

These batteries are higher capacity than the ones that come with the Cetus Pro, but they still fit. It's a tight fit, but it works. The extra capacity lets the drone function for about an extra minute (depending on how you fly it) compared the stock ones. They aren't the cheapest batteries, but they come already prepped to fit on the tiny quad, so I can't complain. I know some people haven't been satisfied with them, but they've been great for me.

Seem to get a decent amount of extra flight time compared to the 450mah even with the extra weight

These batteries work as intended. Slightly larger then the stock battery I got with my BetaFlight Air75. Would recommend buying and buy a few to get more flight time!

Decent don’t fit under drone tho

Good

1 out of 4 of battery is slightly swollen, quality controls questionable

I use this for my Vision 40 FPV drone from rotor riot, and it’s great! It holds a high voltage for longer and gives me about an extra 1 to 2 minutes of flight time. In the future I’m definitely adding more of these to my arsenal.

Didn’t expect the batteries to be a bit longer than the OEM batteries but I made it work and I’m glad I bought them. The punch you get from them is perfect and they do last a bit longer than the standard ones