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[Solved] Tello not starting, not charging, blinking blue light

TiltedTello

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Hi guys,

I bought a Tello around a year ago and had some good fun back then. Then it pretty much stayed in storage for several month until today I decided to take it for a spin.

However I'm having trouble charging the battery. When plugging the USB charger in the Tello I get the following sequence:

LED turns GREEN - blinks RED quickly a few times - blinks BLUE slowly around 6 times - steady BLUE for 2-3 seconds - blinks BLUE slowly around 6 times - steady BLUE for 2-3 seconds - and this keeps going forever.

Video: Tello charging issue - Streamable

After 2 hours or so of charging, I tried unplugging and starting the drone, but the LED stays off.

What I have tried so far:
  • Updating firmware (successfully, but it did not fix my problem)
  • Trying different power sources and USB cables, same results everytime

Is my battery dead? :/
Any other ideas?

EDIT: After leaving the battery charging for a full night, seems it is fixed. However the battery life has decreased. Have ordered 2 new batteries.
 
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