Recently, several efficient power-aware routing protocols have been developed for Mobile Ad Hoc Networks. While the MTPR (Minimum Total Transmission Power Routing) scheme attempts to reduce the total transmission power per packet, the MMBCR (Min-Max Battery Cost Routing) scheme tries to consider the remaining battery power of nodes to prolong the lifetime of each node. Since it is difficult for just one protocol to meet both goals simultaneously, a hybrid protocol like the CMMBCR (Conditional

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... x-Min Battery Capacity Routing) mechanism has been devised. However, to the best of our knowledge, this is the first simulation study to compare the three protocols subject to a range of MANET scenarios including mobility and network density. Moreover, in this study, we also consider energy consumption due to overhearing of packets and show its importance when developing power-aware protocols.