Lithium-Ion Charger

Lithium-Ion cells require a totally different charging protocol to that for NiCd or NiMH cells, a protocol that has to be followed precisely. During the last year we have already published two articles regarding the charging of this type of cell. This time we’re using a new IC (so it may still be difficult to obtain!) made by Linear Technology (www.linear.com), which is very small and can therefore be built into the cell permanently, but is also suitable for use as an ‘ordinary’ charger.