Tenergy Combo: 5pc 3.7V 160mAh 15C LIPO Battery for Micro Helicopter: e-Flite MCX / MSR / Parkzone / Vapor, Cessna / Micro Citabria (#30530) Package comes with: 5 pcs Tenergy 160mAh 1S LiPO Batteries Voltage: 3.7V Discharge rate: 15C Dimensions: 44mm x 12mm x 6mm Direct replacement for popular e-Flite MCX, MSR, Parkzone, Vapor, Cessna, Micro Citabria (see more below).