My City commuter & Her step thru Interceptor have had the Plastic Battery sleeves crack @ Various points along the Mid-seam & the Screw nodules in the casing actually breaking apart. The problem was initially noticed while riding along & Hearing a "Slapping" Noise coming from the back Of the bike. Upon closer examination I Stooped down & jiggled the Battery in an up & down motion when I noticed that the seam in the casing actually separated. That was causing the "Plastic Slapping Noise". My remedy was to Connect 2 Medium length ZIP TIES together, loop them around the Back of the casing & Draw it tight !! In Her case I additionally cut & taped along the seams on both sides of the casing with "Gaffers Tape". So far, so good until I decide to call Pedego Tech. Dept & see if they can send us another Battery Casing for each Bike.