Delay opacity - Recording Screeny (Battery)

[#1]

Hello guys ! 🙂

Im working on the recording screen effect. and I would like to that my battery after 20 minutes, its down by 1 bar, so there is 3 left, after 40 minutes, 2 bars left, and so on.

I have tried different solutions but no luck.

I can't figure out how to manage to do that. Im new to adobe efects.

[#2]

Edit@4MP.

i forgot to mention. I want them to "blink" with the opacity, which i have done to the first bar.
I have tried to do it for the 2 bar, however it only work for a few seconds at the 20 min. and then its only solid green. Just one blink.

[Rick Gerard]

Don't try and do everything on one layer. Split it, remove the loopOut() expression, and add a few keyframes. 

By the way, you only need loopOut() for the expression. All of the other parameters you are using are the defaults.