From first ever battery invention in 1800, by Volta; till the latest technology which allows us to charge up our smartphones; the progress in battery technology seems to be unbelievable. But did that happen in a single battery technology?
These cylindrical cells are used to make the battery units for the majority of modern laptops (except the ultra-slims). Such a battery will usually contain 3, 6, or 9 such cells—some go as far as 12 or 15 cells. Inside one of these batteries, the cells will generally be pink in external color and interconnected by tabs that have been spot-welded together.