Once the basic theory behind the operation of batteries is understood, we can apply these concepts to better understand the way batteries are utilized.

EO 1.6

DESCRIBE the relationship between total battery voltage and cell voltage for a series-connected battery.

EO 1.7

STATE the advantage of connecting a battery in parallel with respect to current-carrying capability.

EO 1.8

STATE the difference between primary and secondary cells with respect to recharge capability.

Series Cells

When several cells are connected in series (Figure 7), the total voltage output of the battery is equal to the sum of the individual cell voltages. In the example of the battery in Figure 7, the four 1.5V cells provide a total of 6 volts. When we connect cells in series, the positive terminal of one cell is connected to the negative terminal of the next cell. The current flow through a battery connected in series is the same as for one cell.

Figure 7 Cells Connected in Series