A self adaptable intelligent battery charger for portable electronics

Proliferation of portable electronic equipment, that uses secondary battery types with different capacities & cell chemistries, has become a threat to the environment. The number of batteries disposed per day is on the rise; the associated-dedicated-battery-charges naturally get discarded with the equipment, adding much to the pollution. The improper charging patterns that reduce the life cycle of batteries are also contributing to the problem. This paper introduces a concept and a methodology which can be used to reduce the environmental impact due to different batteries and their chargers. The proposed charger is adapting itself to, any battery type (Lead Acid, NiMH, Li-Ion) with any cell number. This finds the charger still useful, though the equipment is wasted and no longer useable. The proposed methodology identifies the battery type using its terminal electrical-characteristics. The method reveals the battery capacity, with no restrictions imposed by the charging state. Having identified the battery type, the proposed quantum table identifies the number of cells in the battery. Therefore, the battery can be properly maintained to get maximum cycles before being disposed. The operation and the control method of the charger are also explained.