[gentoo-user] Full battery laptop only 1 hour

Hello guys, I bought a laptop and i got like 4 hours of batter life, everything ok, (using more than 1 vm, etc), however now in idle my laptop has only 1 hour of life, which is really annoying because its a brand new laptop bought one year before. Here is my upower -d in case its necessary:

[gentoo-user] Updating cinnamon to the newest version.

Hello guys! How are you? I would like to know how to update cinnamon to the newest version, just because i can´t modify the window close and open animation speed, my current cinnamon version is 5.2.7 which the animation speed config has been removed. Thanks in advice :)

[gentoo-user] Boot has no space left.

Hello again guys, how are you? I hope you're fine. I remember someone told me a program to use to remove old kernels in order to get more space on /boot, i tried to search the original message that the guy sent me trough this list, but i cannot find it. Here's a screenshot of my /boot

[gentoo-user] Boot has no space left.

Hello guys, Sorry for not replying the first email i sent, however i got covid and i cannot reply you, i forgot the original mail i sent here so i make a new one. This is the same as my previous one, boot has no space left, here you have a df -h output inside /boot: Again, thank you all

[gentoo-user] Boot has no space left.

Hello, I was updating my gentoo install, and now it says that /boot has 0 bytes, however i don't know why since i never save anything in that folder. Any idea on what can i do? Thanks.