In response to the demand of outdoor sports market, the company actively invests in the research and development of outdoor energy storage lithium battery module system, adopts high-power lithium battery, independently develops sine wave inverter (DC ~ AC module), with conversion efficiency of more than 90%, DC panel customization, appearance design development (ID), system assembly and aging debugging. At present, 300W ~ 800W power modules have been delivered stably in batches. The 1000W ~ 2000W power module is under intense and orderly debugging.