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.
Thee Wabash and Erie Canal was a shipping canal that linked the Great Lakes to the Ohio River via a man-made waterway. The canal provided traders with access from the Great Laâ¦kes all the way to the Gulf of Mexico. Over 460 miles long, it was the longest canal ever built in North America.