Line art drawing of a dry cell:
1. brass cap, 2. plastic seal, 3. expansion space, 4. porous cardboard, 5. zinc can,
6. carbon rod, 7. chemical mixture.
An electrical battery is one or more electrochemical cellsDell Inspiron 910 Battery
that convert stored chemical energy into electrical energy.[1] Since the
invention of the first battery (or ”voltaic pile”) in 1800 by Alessandro
Volta, batteries have become a common power source for many
household and industrial applications. According to a 2005 estimate,
the worldwide battery industry generates US$48 billion in sales each year,
[2] with 6% annual growth.[3] DELL Inspiron Mini 9 Battery There are
two types of batteries: primary batteries (disposable batteries), which are
designed to be used once and discarded, and secondary batteries (rechargeable
batteries), which are designed to be recharged and used multiple times.
Batteries come in many sizes, from miniature cells used to power hearing
aids and wristwatches to battery banks the size of rooms that provide standby
power for telephone exchanges and computer data centers.
1 History 2 Principle of operation 3 Categories and types of batteries 3.1
Primary batteries 3.2 Secondary batteries 3.3 Battery cell types 3.3.1 Wet cell
3.3.2 Dry cell 3.3.3 Molten salt 3.3.4 Reserve 3.4 Battery cell performance 4
Battery capacity and discharging 4.1 Fastest charging, largest, and lightest
batteries 5 Battery lifetime 5.1 Life of primary batteries 5.1.1 Battery
Dell NC929 keyboard sizes 5.2 Lifespan of rechargeable batteries 5.3
Extending battery life 5.4 Prolonging life in multiple cells through cell
balancing 6 Hazards 6.1 Explosion 6.2 Leakage 6.3 Environmental c
oncerns 6.4 Ingestion 7 Battery chemistry 7.1 Primary battery
chemistries 7.2 Rechargeable battery chemistries 8 Homemade cells 9 See
also 10 References 11 Further reading 12 External links History