Reverse polarity protection is required.
For Rockit flight computer
My son grabbed and accidentally connected the battery with inverted polarity as there are a lot of batteries with both versions in the market and we have both types of them. The controller is dead now, only USB port is still showing some signs.
I really recommend to add some protection for inverted polarity, it's a pity to broke it in a such easy way.
Response from Dan Invents | Sept. 30, 2022
Finally, Tindie allowed me to reply to this post.
I'm sorry to hear that your controller broke because of battery reverse polarity. The user manual indicates the correct battery polarity and the associated risks of reverse polarity. However, I do understand that with the excitement of using a flight computer for the first time one might overlook the user manual. Therefore, I have shipped you a new flight computer free of charge.
This is a valuable learning experience and I will implement robust reverse polarity protection in future designs.
-Daniel