Capacity and voltage retentions upon subsequent cycles for Li
2RuO
3 and Li
2Mn
0.4Ru
0.6O
3 (LMR) under various cut-off voltages have been investigated. The change in average and local structures upon electrochemical cycling were examined by ex-situ XRD and Ru L
3-edge XANES measurements, and the relationship between the cyclic capabilities and the structural changes is discussed. The deteriorations of discharge capacity and average discharge voltage in the subsequent cycles of LMR with a charge cut-off voltage of 4.8 V vs. Li/Li
+ are remarkably smaller than that with the voltage of 4.2 V. Moreover, LMR exhibits higher average discharge voltage than Li
2RuO
3 under a charge cut-off voltage of 4.8 V. The phase transition behavior of LMR was not similar to Li
2RuO
3 upon electrochemical cycling. Ru L
3-edge XANES spectra measurements reveal that RuO
6 octahedra in LMR charged at 4.2 V are much distorted. The local structure of RuO
6 octahedra is associated with the cyclic capability of LMR and Li
2RuO
3.
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