In Figure 9 we see a pair of 12-volt batteries connected in parallel. This 12-volt battery pack is connected to a single 12-volt charger. Note the blue wire designated W1. The purpose of this wire is to balance the voltage drop evenly across both batteries and each wire during charging.
Confidence votes 36. The Erie Canal was so important to the United States (U.S) because it was the water way connecting the Hudson River with Lake Erie through New York State. 20 people found this useful.
The Erie Canal is a canal in New York that is part of the east-west, cross-state route of the New York State Canal System (After a later conversion, became known as the New York State Barge Canal). Originally, it ran about 363 miles (584 km) from Albany, on the Hudson River, to Buffalo, at Lake Erie.