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.
The Erie canal was very important because, when the Erie canal wasn't built yet, it was hard for transportation and trading. However when the Erie canal was built, it was much easier to go from 1 place to the other, and to get or give goods to other places. Meaghan Anderson.
Then the Erie Canal was built in 1825 to connect the Great Lakes to New York. This was a cheap and safe way for transporting goods, from the West to the East. The East was then known as the center of commerce.. The Erie Canal was bypassed by railroads in the 30's, and there were also the steamboats.he early invention improved the transcontinental transportation of  the people and goods was the steam locomotive. This was facilitated  by the rail road network that was d â¦ eveloped. 1 person found this useful.