Hello. Welcome to the forum. Yes, props break, indoors, outdoor, with and without prop guards. As you can see from the picture, and this is certainly not ALL the broken parts in my collection, props break, so do prop guards, OEM and aftermarket parts both, I got my first
Tello for Christmas, we now have 4, between my significant other, the grandchildren and myself, we have crashed many times, into many, many things. I have crashed full speed straight into a tree, and slowly into the wall, inside. The Tree, ironically, did little to no damage, whereas the wall has taken several props and guards. My advice is to use only OEM parts, the red guards( from China, aftermarket) break very easily, the clear props snap right in half, hard brittle plastic, even the OEM props bend and break, it's inevitably going to happen. With the release of the new Iron man model, Ryze has made red guards and props, ideal for orientation of the drone while flying. Quite useful for someone who is just starting out. You can buy the following OEM parts, Blue, yellow and white covers, props, guards and batteries. Amazon has many of them, or Google, expect the parts to be shipped from China and take a while, DJI, also China, sells them and the iron man parts and usually takes longer. In the USA you can get most parts from best buy, target, Frys electronics, etc. Amazon is a sure bet though. I recommend getting the right charger, at $15- $20 ea. batteries are the most expensive item, would be a shame to burn them up. Another piece of advice is simply giving the motors a short rest inbetween batteries, I switch back and forth between the two yellow drones, giving each at least a 10 min rest between flights. Another thing to consider, make sure that you have the right props in the right positions, 10 and 4 o'clock get the "marked" props, your
Tello will NOT fly otherwise. Hopefully this info will be of some help, if not to you then others who are wondering the same thing(s)
Pilot 47