We now have available the custom rear carrier for the 37V 8Ah eZee LiFePO4 battery packs. This is a seat post mounted rack, so it can be installed on full suspension mountain bikes and bikes that don't have mounting eyelets. The rack has a rail system that allows the flat battery to slide on and lock into place. And the clamping mechanism features double bolts for a really tight bind to the seat post tube, to prevent the side to side swaying that often happens when seat post carriers are used with a heavy load. This carrier is now included with the eZee LiFePO4 upgrade kit.