Gyrocopters Flash 3.0 Scooter Not Powering On FIXED! WORKING!

I fully charged my Gyrocopters Flash 3.0 scooter (which I've had for about a year), powered it up and started to ride it home from work... Within about 3 seconds of riding the power abruptly shut off and I couldn't turn it on again, no matter what I did! When I got home I decided to open it up and see if any wires disconnected or burned. After confirming the battery was still ok, wires all looked intact, I decided to pop open the display cover and jiggled around the switch on the display board and shorted a few of the exposed contacts. Tried to start it again, and it WORKED! Perhaps something was frozen on this board, a chip was unresponsive, or the scooter needed a complete power drain (by disconnecting the battery) to get it to hard reset. Either way, it works now. If you've had a similar problem, let me know in the comments how you fixed it and if you figured out more about what causes this!

[@devhackmod]

And the plot thickens! I took it out for a test run after the fix, ran it around the neighbourhood for 5 minutes and then got up to 25 km/h just before an intersection at which I had to stop. So I slammed on the brakes! Scooter took a bit longer than usual to stop (which I figured was due to my speed and weight). After the stop I looked down at the display and it was off! Dead! Could not power it up again. I took off the display panel (since it is now looser than usual) and nothing I did there worked. So I don't think it had anything to do with that board. Walked home and opened up the bottom, ONLY disconnected the main battery (yellow plug) for a few seconds and connected it again, and the scooter turned on! So seems like a hard reset (complete power disconnect) resets the logic boards in the controller and allows power button to work again.
I guessed that maybe it has to do with hard stops using the brake... because it has a brake light on the tail fender, maybe something faulty going on there? Or maybe if detects acceleration and braking at the same time it went into a safety shutdown? Or maybe when the scooter senses that the brake is applied but not slowing down quickly enough, it will also trigger some safety mode where it goes completely dead? Not sure if these scooters have regenerative braking, but if so them perhaps once polarity reverses to the motor to charge up the battery, it is overloading the charging circuit, detects a fault and shuts off? These are all hypotheticals.
So in any case, I scootered back and forth along my street, going up to 25 km/h, slamming on the brakes, accelerating, slamming on the brakes, repeatedly for about 5 minutes and could not reproduce the problem! Now the scooter is not shutting off when I put it through these hard cycles. I'm still at a loss to understand what exactly is triggering the failure, but so far a hard reset seems to get it up and running.
Therefore, if I cannot solve the problem I may have to put a switch on the side of the scooter that lets me hard-reset the battery (like just serial-connect the battery through the switch) or create an access panel so I can easily get to the battery yellow plug. If this happens while I'm on the road, I can quickly and easily reset the scooter. Otherwise I'm looking at removing and putting back 15 screws each time!

[@sykotic77]

Mine has an odd issue, at times It'll have a long beep and not power on at all. I'll plug the charger in for a few mins and try again and it powers on again. I haven't taken it apart yet, but i'll give it another few days and see if the issue keeps coming up.

[@devhackmod]

@@sykotic77 Let me know what happens. If only I knew 100% for sure it was the battery and that the rest of the scooter was good, I wouldn't feel so bad dropping another $200 on a new battery (the scooter cost $350 total and it's only a year old). However, to spend $200 after 1 year for a new battery that costs more than half the original cost of the scooter seems a bit of a rip-off especially since they are supposed to last a few years at least.