Which type of dry cell is typically found in a laptop computer?

Laptops typically utilize lithium batteries due to their high energy density, lightweight nature, and ability to recharge many times without significant degradation. Lithium batteries can provide significant power relative to their size, making them ideal for portable electronics like laptops that require efficient energy storage and longevity.

In contrast, alkaline batteries are primarily used in low-drain devices and are not rechargeable, making them less suitable for laptops. Nickel-cadmium batteries, while rechargeable, have been largely replaced by lithium-ion due to issues such as memory effect and lower energy density. Lead-acid batteries, although robust and reliable for larger applications (like uninterruptible power supplies), are too heavy and not feasible for the compact and portable design of a laptop. Therefore, the unique characteristics and performance of lithium batteries make them the standard choice for powering laptop computers.