Only have 1 of these motion sensors . It's in a relatively high traffic location in a covered outdoor space where it catches motion on average 3 dozen times a day. Assuming the battery reporting level is accurate it looks like pretty good battery life.
Never had it drop out of the mesh since it was paired. Based on zigbee device performance throughout the house I've got a pretty strong mesh based completely on 5 Tradfri smart plugs and no repeating bulbs being used.
