Originally Posted by BeefKopter
I'd say its a power loss. Or signal loss. It just loses any power for a split second. But it's so fast that I can usually keep it the air. I seems like a wire or solder issue to me. I guess if could be the board too
It could be the battery connector. It's pretty common for the wire on the connector to wear out where is attaches to the connector especially if you pull the plug by the wire nod not the plastic connector. When it starts to wear out it will intermittently lose then regain power.