[Xtreme 2] battery lights do not work

Hello guys.

Recently I put my Xtreme 2 into water and it had no probelm until I plugged it to the charge.

After 2 hours of charging, I saw that 2 of LED battery lights do not work. (first, third and last one work except the second and fourth one.)

Also everything works fine such as drivers, battery life…

It's waterproof but I don't know why this happened:(

Is there any solution?