This study examines energy consumption and the impact on network lifetime using ANODR and DYMO routing protocols in MANETs with the QualNet simulator. Both ANODR and DYMO are designed for MANETs but employ different approaches for establishing and maintaining routes among mobile nodes. ANODR adapts routing decisions based on neighborhood information, while DYMO operates on-demand, establishing routes only when necessary. To investigate energy consumption and network lifetime, simulations or experiments should be conducted to compare the performance of these protocols under various scenarios. Analyzing these QoS metrics provides insights into the energy efficiency and impact on network lifetime of ANODR and DYMO in MANETs.