battery cycles

Had a bit of a shock yesterday when my battery ran out suddenly , before the ride I played with the custom settings and set boost to high just to see what it was like . The battery already had one bar gone from a previous ride when I did this . I set of for short ride riding mainly in eco when...

Right, got to ask..... I've done 1123.8km (698.29miles) and the battery has registered only 31 charge cycles. BUT......my battery health has dropped from 95% down to 81% in the last week. I have done nothing different in the way of charging etc, but concerned that the health has dropped this...