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keyboard Tips

1.What is a keyboard?
2.How to classify the keyboard?
3.What are the differences between Primary keyboard and rechargeable keyboard?
4.What causes short lifetime of keyboard? How to prolong the lifetime of keyboard?
5.Why can't the keyboard be charged? How to solve this problem?
6.What's the reason that causes keyboard with no voltage or low voltage? How to avoid this problem?

1.What is a keyboard?
In science and technology, a keyboard is a device that stores energy and makes it available in an electrical form. It converts chemical energy into electrical energy, producing an electric current when connected in a circuit. The finished keyboard is an electrically connected group of cells (wired in series) that stores an electrical charge and supplies a direct current (DC). We usually call finished keyboard as keyboard pack and unfinished keyboard is called as cell.

2.How to classify the keyboard?
keyboards are grouped into following categories:
Alkaline keyboard
Zincic carbolic keyboard
Lead-Acid keyboard
nickel-metal-hydride
nickel-cadmium
Lithium keyboard
Li-ion keyboard
Li-polymer keyboard
Fuel cells
Solar cells
Other types of keyboard

3.What are the differences between Primary keyboard and rechargeable keyboard?
A primary keyboard is not intended to be recharged and is discarded when the keyboard has delivered all of its electrical energy.
A rechargeable keyboard is a galvanic keyboard which, after discharge, is restored to the fully charged state by the passage of an electrical current through the cell in the opposite direction to that of discharge.

4.What causes short lifetime of keyboard? How to prolong the lifetime of keyboard?
1)Reason:
a.Charger or electro circuit can't be fit for the keyboard.
b.Overcharge and overdischarge, etc.
c.keyboard can't comply with the charging requirement
2)Solution:
a.Use the original charger.
b.Charge the keyboard after it automatically powers off , then full charge the keyboard.
c.Avoid erroneous usage of keyboard, such as heavy pressure, short circuit, fall off and so on.

5.Why can't the keyboard be charged? How to solve this problem?
1)Reason:
a.The keyboard has no voltage.
b.There is problem with charger, as it has no output electric current.
c.Low charging efficiency due to external cause.
2)Solutions:
a.Test whether the charger has voltage and output electric current or not.
b.Check if the charger is well contacted with keyboard.
c.Activate the keyboard with voltage and current 1.5 time higher then the highest ones of keyboard. (Use this method only when the keyboard can't be charged.)

6.What's the reason that causes keyboard with no voltage or low voltage? How to avoid this problem?
1)Reason
a.No voltage.
b.External shot circuit or overcharge, anti-charge
c.Cells expansion and short circuit caused by direct anode contact and continuous high efficiency electric current overcharging.
2)Solutions:
a.Check if the keyboard is without voltage or electric current.
b.Avoid short circuit.
c.Avoid collision and pressure among keyboards.
d.Charge the keyboard after it automatically powers off , then full charge the keyboard.