[SOLVED]A SIRIOUS problem with low battery warning

[MicroGames]

Hello,
I bought and recived my gamebuino about 2 months ago, It all worked fine.
Unfortunatly I ran into a sirious problem. Yesterday I left the gamebuino to charge up. Today at 8:56 I powered on the gamebuino but after 5 MINUTES OF PLAYING the gamebuino displayed "Low battery PLEASE TURN OFF" but the battery voltage was 4175mV and in the settings gamebuino should say something like this at battery voltage of 3550mV!
Also when i unpluged the gamebuino the "Full battery" LED was turned on! Also half a second before this warning gamebuino displayed full battery!
What is going on? I only have charged and discharged the gamebuino 3 times!
Can anyone help me?

[MicroGames]

Hi,
I have Solved the problem. All I had to do was to fully charge up the gamebuino, then in settings restore to default settings, turn off gamebuino,
Remove SD Card, Turn gamebuino back on and FIXED! YAY!
So what I think was the problem is that I changed name of player to Kuba
And I think that this smily fasce was the problem so.. Rodot if You can Please try to fix it.