2. The earliest invention of the battery can also be traced back to 1860. At that time, Frenchman Plante invented a battery with lead as electrode. The uniqueness of this kind of battery is that when the voltage of the battery drops for a period of time, it can be energized with reverse current to make the battery voltage rise. Because this kind of battery can be used repeatedly, it is called "storage battery".
3. 1890 Edison invented the rechargeable iron-nickel battery, which was commercialized in 19 10. Now there are more and more types and forms of rechargeable batteries, from the earliest lead batteries and lead crystal batteries to iron-nickel batteries and silver-zinc batteries, and then to lead-acid batteries, solar batteries and lithium batteries. At the same time, the application field of storage battery is wider and wider, the capacitance is larger and larger, the performance is more and more stable, and the charging is more and more convenient.