Early laptops used to be pretty slow, thick, and heavy.
Modern laptops are generally a lot thinner and lighter than previous generations.
This process has allowed for smaller heat dissipation techniques and has reduced the necessity of large batteries.
Battery technology has also seen significant miniaturization and weight reductions.
Old school nickel-cadmium batteries were heavy, bulky, and werent able to store all that much power.
In comparison, modern lithium-ion batteries are a lot smaller, lighter and can hold a lot more power.
