Two advantages of connecting two identical cells in series

Here are two advantages of connecting two identical cells in series:

1. Increased Voltage: The total voltage (or EMF) of the combination is the sum of the individual cell voltages. If two identical cells, each with voltage V, are connected in series, the total voltage across the combination will be 2V. This is useful for powering devices that require a higher voltage than a single cell can provide.
2. Increased Power/Energy Delivery: With the increased voltage, the series combination can deliver more power (P = V × I) to a given load compared to a single cell, assuming the current drawn is within the cell's limits. This also means more total energy can be supplied over time.