Question: are all laptop batteries lithium ion?
Answer: All laptops use batteries, but not all batteries are the same. It pays to know about the differences between lithium-ion, NiCad, and NiMH batteries, even before you buy a laptop. ... A NiMH battery is longer lasting than a NiCad, but, sadly, it suffers from The Dreaded Memory Effect just as badly as the NiCad.