Type

Status

Specific Energy(Wh/kg)

Peak Power(W/kg)

Cycle Life(#cycles)100% DOD*

Charge Time(100%)(Hr)

Cost($kWh)

Environmental Friendly?

VRLA Lead Acid

Commercial

30-40

150-200+

100-200

3-20

100-250

No

Ni-Cad

Commercial

20-50

100-1000

800-3000

3-8

800-1000

No

Ni-MH

Commercial

50-80

200-1000

600-1200

3-8

1000-1300

Yes

Li-Ion

Commercial

100-150

<1000

600-1200

3-8

1500-3000

Yes

Ni-Zn

Development

55-65

500-800

300-500

1-4

150-500

Yes