FAHRER Battery Cover, Shimano, Frame Fits Shimano Steps frame battery series E5000, E6000, E6100, E7000 and E8000. Extends the battery capacity on cold days Black - Cycle Service Nordic US
More range: New 630 Wh Shimano battery and new display for all Shimano-STEPS motors | E-MOUNTAINBIKE Magazine
Shimano Steps SM-BCE60 Battery E-Bike Charger for BT-E6000 BT-E6010 - New | eBay