master slave all in one battery management system

{"cid":"91207808","title":"480V 512V 400A 500A High Voltage BMS Master Slave BMS Overall Solution Battery Management System 3A Active Balance BMS For BESS UPS HV LFP Systems","imgUrl":"https:\/\/img.chinax.com\/nimg\/9c\/46\/6cc711823073bed29f209300f30f-200x200-1.jpg","attrs":{"Price":"negotiable email with bruceliu@hngce.com","Brand Name":"GCE","Model Number":"RBMS-S20-500A-480V","Minimum Order Quantity":"1set","Delivery Time":"15-25 workdays","Place of Origin":"China,Hunan","Certification":"CE\/RoHS\/SGS\/MSDS","Packaging Details":"Corrugated Carton, bundles, pallets, wooden box","Payment Terms":"100% Adv.","Supply Ability":"1000 sets\/month","Operating Temperature":"-20\u2103~60\u2103","Product Name":"Battery Management System","Rated Current":"400A 500A","Power consumption":"\u226415W","Application":"UPS, Solar Energy Storage System, Battery Energy Storage System","Battery Type":"Lithium-ion(LFP)\/NMC\/LTO","Color":"RAL9005 Black Sand Grain","Voltage":"480V"}}

{"cid":"91200399","title":"10000mah Solar Power Wall Storage Lithium Polymer Battery Pack 3.7v","imgUrl":"https:\/\/img.chinax.com\/nimg\/3d\/7f\/3a5b490cab37ec03daee14c8c677-200x200-1.jpg","attrs":{"Brand Name":"Hochiry","Minimum Order Quantity":"10PCS","Delivery Time":"10-15 work days","Certification":"TUV","Place of Origin":"CHINA","Payment Terms":"T\/T, Western Union, MoneyGram","Supply Ability":"10000 Piece per week","Packaging Details":"Product size: 23*12*20cm Manner of packing: Color Box Single weight:3kg QTY \/ Carton:4 unit \/ Carton Carton N.W.:15.4kg Carton G.W.:16.2kg Carton Size:49.5cm*46cm*21cm","Product name":"Rechargeable 48v 100ah Battery","Battery Type":"LiFePO4","Cycle life":"3000cycle\/6000cycle","Protection":"Built-in Smart BMS","Capacity":"50Ah\/80ah\/100Ah\/200Ah","Application":"Solar, Wind, UPS Energy Storage","Communication Port":"RS232, RS485, CAN"}}

{"cid":"91210952","title":"The Middle Machine for Baterry Tester","imgUrl":"https:\/\/img.chinax.com\/nimg\/0d\/01\/1e71e60ef5ec34d459615993be21-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"TICO","Model Number":"STC-ZWJ-4'S-T-1U","Minimum Order Quantity":"1 set","Delivery Time":"5~8 working days","Place of Origin":"Shenzhen","Payment Terms":"T\/T","Supply Ability":"20 sets per month","Packaging Details":"Standard export packing","Model":"STC-ZWJ-4'S-T-1U","Screen":"LCD","Communication mode":"TCP\/IP","IP levels":"IP20"}}