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Tello battery: 1 green blink and 2 red (no charging)

PetPol

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Oct 17, 2021
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Hi there. I have not used my tello for a relly long time (2 years+). I connected to charge and I receive 1 green blink follwed by two red blinks and then nothing.
Any ideas? My guess is that I need a new battery...
 

quaddamage

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Sep 5, 2019
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My guess is that I need a new battery...

Yes.

If you like tinkering, and have a li-po charger, then you can make some holes and charge the cells directly, then it will work - the Tello batteries are not locking permanently like other DJI batteries.

But the cells are damaged, so you will get low flight time. Specifics depend on how much it was discharged - you've lost 20%-90% of the capacity, and it's possible you'll get an error and auto-landing seconds after starting the motors.

Also, damaged batteries tend to heat up more, and they release hydrogen. So these cells are more likely to turn into smoke flare.
 

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