LEAD
Nickel Metal Hydride or Lithium Ion batteries are the most widely used.
Yes. but it isn't the only metal used for batteries.
the first commonly metal used was wood
Zink
They reduce the use of metal used to make them. (i.e. when you get disposable batteries the metal is disposed) but if you recharge batteries, it will reduce the costs of making.
D batteries are commonly used for large flashlights, radio receivers, transmitters, boomboxes, safety systems, megaphones, etc. The use of these batteries are for applications of long-lasting run time.
Nickel Metal Hydride or Lithium Ion batteries are the most widely used.
Lead
lead
Yes. It's used in Nickel Cadmium and Nickel Metal Hydride batteries.
Steel
lead