What is a Lithium Ion Laptop Battery (Li-Ion)?
Lithium Ion batteries use Lithium Oxide and a Carbon compound, usually Graphite as the electrodes. These are separated by a micro-porous film containing an organic solvent as the electrolyte. Compared to NiCd and NiMH batteries, Li-Ion batteries
provide the same capacity in-spite of being smaller and lighter. Li-Ion batteries have a higher power to weight ratio. These batteries do not suffer from the dreaded "memory effect", that affects NiCd batteries. Li-Ion also has a much lower levels of self-discharging. These tend to be comparatively more expensive due to higher production costs.