18650 Battery for Nybble

Hi, I just saw your post.

You can use 18650 batteries, the only concern is size. They will conflict with the knee servos when installed under the belly. That's the major reason I chose 14500.

The continuous beeping sound comes from the code for low voltage alarm. It's a mechanism to avoid over-discharging. But you will need to change the threshold according to your battery. And if you don't turn off the switch, it will keep beeping until running out.

Hello I just wanted to ask if someone can tell me if once connected to batteries nybble board started to squeal. No sign/smell of burning or anything, both lamps (blue and green) are lit. I was connecting these batteries (2x).

https://secondlifestorage.com/showthread.php?tid=1772

Is this normal? I disconnected as soon as I heard the noise. Batteries are charged and working properly and + and - are connected properly, switch is on Ar, and jumper on V_S and V+. No Servos are attached yet.

Thanks for your response.

Edit:

It seems that this is was already described under the different thread.

https://www.petoi.com/forum/hardware/ftdi-connection/p-1/dl-5cf5f90d7b810204c9fb9ae6-5cf5f7fbae602f04bc6cb852-1

If you see that this is not the same case I would kindly ask you to reply.

Hello, it is not clear to me if nybble has built in battery protection for these 14000 and 18000- not to drain battery below 2.5v and make them unusable?