Battery Issues in Acer Nitro5 AN515-42 V1.18

Hello manjaro community, I have been a part of the linux world for quite some time now, yet a newbie to arch/manjaro.
The specs of my laptop are as follows :

 Host: Nitro AN515-42 V1.18 
 Kernel: 5.8.6-1-MANJARO 
 Shell: zsh 5.8 
 Resolution: 1920x1080 
 DE: Xfce 4.14 
 WM: Xfwm4 
 Theme: Matcha-dark-aliz [GTK2], Adwaita [GTK3] 
 Icons: Papirus-Adapta-Maia [GTK2], Adwaita [GTK3] 
Terminal: xfce4-terminal 
Terminal Font: Monospace 12 
CPU: AMD Ryzen 5 2500U with Radeon Vega Mobile Gfx (8) @ 2.000GHz 
GPU: AMD ATI Radeon Vega Series / Radeon Vega Mobile Series 
GPU: AMD ATI Radeon RX 460/560D / Pro 450/455/460/555/555X/560/560X 
Memory: 1897MiB / 6914MiB

The battery life I get on Wndows 10 is about 4 - 4.5 hours, which drops down to about 2 in linux.

I have tlp enabled, with the default configurations. Even undervoted my CPU using amdctl (Found in Undervolting CPU section at ArchWiki) All of that does not seem to help much.
The general use of my laptop is browsing chrome, running text editors and media playesrs such as VLC. I have hardware acceleraton enabled for Chrome

I have open source amdgpu driver installed, running on Xorg.
I have been jumping from one desktop environment to another… tried out GNOME, KDE Plasma, MATE, and not running on XFCE, just experimenting as to where can I match the battery stats close to my Windows 10 setup.

I don’t know what more information to provide. Pls help me out !!!

I use slimbookbattery, it’s like a gui for tlp, much easier to config than tlp-ui or tlp by cli.
Besides that, you can try and disable one of the graphics card in bios, if you can’t, that app can do it for you.

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