Not the same.
1. Lithium battery input voltage refers to the charging voltage, which is generally between 3.6V and 4.2V, depending on the lithium battery model and manufacturer. Lithium battery output voltage refers to the discharge voltage, which is generally between 3.0V and 3.7V. The actual output voltage of lithium batteries may fluctuate and change due to factors such as as the discharge state, charging current and use environment, so the input and output voltages of lithium batteries are different.
2. Lithium battery is a type of battery that uses lithium metal or lithium alloy as positive/negative electrode materials and uses non-aqueous electrolyte solution.