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.
Commercial Importance. The Panama Canal was built to shorten the distance that ships had to travel to pass between the Atlantic and Pacific Oceans. The canal permits shippers of commercial goods, ranging from automobiles to grain, to save time and money by transporting cargo more quickly.