Question

characteristics of primary and secondary cells

Answer 1

Rechargeable batteries are gaining such high media attention that some consider non-rechargeables as old technology. Primaries still play an important role, especially when charging is impractical or impossible such as in military combat, rescue missions and forest-fire services. Other applications for primaries are pacemakers for heart patients, tire pressure gauges in cars and trucks, transmitters for bird tracking, intelligent drill bits in mining, light beacons in oceans, not to forget our wristwatches, remote controls, electric keys and children’s toys. High specific energy, long storage times and instant readiness give the primary battery a unique advantage over other power sources. Primary batteries are generally inexpensive, readily available and environmentally friendly.