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What is the cycle life of rechargeable battery?

Source:

What-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
(%/ month)

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


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