Decrease power usage on hackintosh

I have a Lenovo T480 with a 72 watt hr battery pack. This should supposedly last 12 - 13 hours of light usage but only lasts about 5 - 6 hours.. Any way to decrease the overall usage? btw i have thunderbolt enabled... (i don't really care about thunderbolt usually i just need the high speeds on the thunderbolt port with my external NVMe drive)

submitted by /u/xSpace_Astronomy
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