Silicon Productions 
The MGB Electric Sports Car
Analysis by Warren Winovich
Page 11
12-Volt lead-acid Gel-Cell
Specifications
| nominal voltage | 12.0 Volts |
| nominal capacity, 20-hr rate | 97.6 A-hrs |
| capacity, 1-hr discharge rate | 64.5 A-hrs |
| dimensions, 1, w, h | 12 15/16,6 1/4,9 3/8 inches |
| weight | 71.7 pounds |
| stored energy, 20-hr rate | 1.171 kW-hrs |
| specific weight, 20-hr rate | 16.33 W-hrs/lbm |
Operation/Charging
| Peukert number | 0.862 |
| Peukert discharge relation | 1-20 hrs: I x t0.862 = 64.5 |
| voltage @ full charge | 12.8 Volts |
| charge voltage | 14.1 Volts, maximum @69oF |
| minimum change voltage | 13.8 Volts |
Figure 4. Characteristics of the 12-Volt lead-acid gel-cell type of battery installed in the MGB electric-powered roadster.
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