Chosen Solution
I found my old flip ultra HD camcorder and well my mom dropped it in the sink a long time ago but it still loads onto my laptop but… when it’s not plugged into anything it doesn’t turn on at all it just blinks red meaning it’s not charged or something? I did charge it for a little but it still won’t work I’m very impatient :( please help!? Model: U1120
See step #3 of this teardown to replace the batteries. Flip Ultra HD Teardown