Bluetooth -динамики
USB Flash Drives
Earbuds & Earphones
Power Banks ChargersWhat is the cycle life of rechargeable battery?
When a battery experiences a charge and discharge, we call a cycle or a period. In the stated charge and discharge principles and the capacity decline before a stated standard, the total cycles it can undergo called rechargeable battery cycle life.
|
Performance Comparison of various Rechargeable Batteries |
|||||
|
Parameters |
Lead acid |
Ni-Cd |
Ni-M-H |
Liquid Li-Ion |
Polymer Li-ion |
|
Voltage (V) |
2 |
1.2 |
1.2 |
3.6 |
3.6 |
|
Weight energy density (Wh/Kg) |
35 |
50 |
80 |
125 |
170 |
|
Volume energy Density (Wh/l) |
80 |
150 |
200 |
320 |
400 |
|
Cycle life (times) |
300 |
500 |
500 |
800 |
1000 |
|
Self discharge |
0 |
25-30 |
30-35 |
6-9 |
2-5 |
|
Electrolyte state |
Liquid |
Liquid |
Liquid |
Liquid |
Polymer Gel |
|
Min. thickness |
> 10 mm |
>3mm |
>3mm |
>3mm |
<1mm |
|
Memory effect |
no |
yes |
no |
No |
No |
|
Pollution |
yes |
yes |
No |
No |
No |
|
Production cost |
lowest |
Low |
middle |
High |
Middle |
|
Advantages |
High drain current and low cost |
Middle drain current and low cost, smaller volume |
Middle drain current and cost, higher capacity |
higher capacity and lighter weight |
Highest capacity, lighter weight and flexible shape |
|
Disadvantages |
Too heavy |
Environmental not friendly |
Higher self-discharge and weight |
Low drain current and higher cost |
Low drain current and very high cost |
|
Applications |
Car and lighting |
Power tool, cordless phone and emergency lighting etc. |
Toy, PDA,, MP3 and digital camera etc |
Cellular phone and laptop computer |
Laptop computers |