Pylontech supply a range of lithium-ion energy storage battery packs that can be used in residential energy storage systems in conjunction with a solar PV installation. The battery packs (24Vdc / US2500 and 48Vdc US2000C, US3000C and US5000) are based on 19inch rackmount trays and simply daisy-chain together for communication, with links provided for connecting the batteries into a parallel configuration.