After flying my new Tello for a week or two, it seemed like the battery life was less than I was expecting given a 13 minute rating. I hadn’t timed any of the flights, so it was just a gut feeling. I have three official Tello batteries. The one that came with the drone has a mfg label as FULLYMAX and the other two are marked SEFU. One was part of the package purchase, the other a separate purchase from Amazon. All looked to be in the same packaging.
It was raining outside today, so decided to do some battery tests. I did two different tests. The first was to run to the 20% warning and land. The second was run it until it automatically land.
For both tests, fully charged all batteries in my 3 bank charger. All read 4.35V. The test was in my living room at a air conditioned 70F. I used the auto launch feature and then just let it hover at that level for the entire flight. Drone was in default slow mode, low resolution camera. No pictures or video were taken during the flights. Controls were not touched during test. I started the stopwatch on take-off and stopped it on landing. Rounded up to nearest second. For each battery under test, I recorded the voltage when I inserted it back in the charger.
Here are the results:

In real use, with flight controls, wind, video and camera captures, Bluetooth along with wifi, the flight times will be less. Based on the results above, and I do land at the 20% warning, probably only getting 6-7 minutes a flight. So about half of the stated 13 min max. I’ll time some of my next outdoor flights just to see if it works out to that. Anyway, guess my gut was right! ?
What are you seeing with flight times?
It was raining outside today, so decided to do some battery tests. I did two different tests. The first was to run to the 20% warning and land. The second was run it until it automatically land.
For both tests, fully charged all batteries in my 3 bank charger. All read 4.35V. The test was in my living room at a air conditioned 70F. I used the auto launch feature and then just let it hover at that level for the entire flight. Drone was in default slow mode, low resolution camera. No pictures or video were taken during the flights. Controls were not touched during test. I started the stopwatch on take-off and stopped it on landing. Rounded up to nearest second. For each battery under test, I recorded the voltage when I inserted it back in the charger.
Here are the results:

In real use, with flight controls, wind, video and camera captures, Bluetooth along with wifi, the flight times will be less. Based on the results above, and I do land at the 20% warning, probably only getting 6-7 minutes a flight. So about half of the stated 13 min max. I’ll time some of my next outdoor flights just to see if it works out to that. Anyway, guess my gut was right! ?
What are you seeing with flight times?
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