Additional battery module for ONLINE XANTO 1000R/1500R rack/tower models (from June 2017) Max. 7 battery packs can be connected Net weight: 21.5 kg (incl. batteries) Height: 88 mm - Width: 438 mm, depth: 412 mm Autonomy time in minutes at 1000/500 W 1 x battery pack: 46 / 103 2 x battery packs: 86 / 190 3 x battery packs: 129 / 280 4 x battery packs: 174 / 373 Please note: Rack-mount rails available separately!