As modern batteries developed, laptops switched to the Nickel Cadmium (NiCad) in the 90s, allowing your machine to recharge. This battery works best when fully drained before charging again, making it vulnerable to “memory effect”. Memory effect meant that NiCad batteries which were recharged before they went dead would “remember” a lower max charge, running the length of time your machine would survive off-charge down quickly over time.

Today’s Lithium Ion batteries don’t suffer from memory effect and the latest in smart batteries and smart chargers know just when to start charging and when to stop to protect your battery best. But taking care of your laptop battery should still be a high priority to get the best out of your machine.