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Table 1 Nominal parameters for 1 Amphour secondary batteries

From: Frontier battery development for hybrid vehicles

 

Lead acid

Nickel metal hydride

Lithium ion

Specific energy

20-35 Wh/kg

~65 Wh/kg

90 Wh/kg

Energy density

54-95 Wh/L

~150 Wh/L

153 Wh/L

Specific power

~250 W/kg

200 W/kg

300 W/kg

Nominal cell voltage

2 V

1.2 V

3.5 V

Internal resistance

~.022Ω per cell

~.06Ω per cell

~.2Ω per cell

Self-discharge

~2% a day

~5% a day

~10% a month

Recharge time

8h (90% in 1h possible)

1h (60% in 20min possible)

2-3h

  1. Larminie (2003)