Is it possible to deep-discharge TELLO battery? Drone was lost, but found, not it won't start or charge.

Where you found it? Is it broken cause by rain or something? Mostly something inside was broken

And welcome to the forum szornyu!

Hey szornyu, please kindly check if the info below would assist.
1. Please connect the drone without the battery to the charger, if the drone detected electricity the indicator would be green, red then off.
    if not, it indicates that there is no current in. Please kindly check the cord as well as a charger.
2. Check whether the issue is fixed after the battery is removed and inserted without connecting to a charger
3. Please press the power button for more than 5-8s until the green light is off. While the red light is flashing, please reconnect aircraft with wi-fi and then re-update with App
If persists, we would respectfully suggest you contact support@ryzerobotics.com for further assistance.
Welcome to the forum : )

RYZE Posted at 3-31 03:19
Hey szornyu, please kindly check if the info below would assist.
1. Please connect the drone without the battery to the charger, if the drone detected electricity the indicator would be green, red then off.
    if not, it indicates that there is no current in. Please kindly check the cord as well as a charger.

Hey! Im having this problem but my guys power button won't turn any light on..
When i charge it it blinks 2 or three times fast
And then once slow
Ive tried many ways to charge it but same problem.
When i pull the battery out it turns green then red