15Ah 20V MAX Replacement for Dewalt Lithium Ion Battery with High Capacity Batteries Cordless Power Tools 20 Volt Baterías DCB201 DCB203 DCB204 DCB205 DCB206 LED Indicator (2 Pack MAX 15Amp 20Volt)

Depends on the laptop manufacturer. If they put in Nvidia Advanced Optimus support, it allow for the dedicated GPU to be shutdown. That removes a 60W to 120W GPU to be removed from the power demand and battery life equations. Power assignments are also control program dependent. I know with the Asus models you can have deeper power controls so you can bring power down to 5W usage or more. This is on your usage testing to see what minimum power is possible. I find that 5W are really sluggish. Other ideas are to look at AMD AI 300 or 400 series CPUs these have a design power of 28W with design operations of 15W to 54W. Look at Ghelper for Asus laptops. Other ideas are G14 Zephyrus, G16 Zephyrus, Proart P16 laptops if you want something light and portable. CONS: high noise laptops due to shitty cooling systems and limited power on the batteries 73whr or 90 whr based on the laptop size. If power is a major concern, these laptops also support USB-C PD. There are USB-C PD Tool battery kits which combines a tool battery with a USB-C PD converter allowing for a extended battery usage for 100W supplies. You can get a 300Watt hour source with a 20V 15-amphour battery. This provides for 3 hours running at 100W at performance mode. https://a.co/d/06OfLkV9 https://a.co/d/0fJLotvO