master slave all in one battery management system

{"cid":"91207808","title":"225S 720V 400A Relay Solution Master Slave BMS Energy Efficiency Battery Management System","imgUrl":"https:\/\/img.chinax.com\/nimg\/4d\/9c\/5b7bc1f07d3e619411a0142d042f-200x200-1.jpg","attrs":{"Price":"negotiable with wenglin@hngce.com","Brand Name":"GCE","Model Number":"5U","Minimum Order Quantity":"2","Delivery Time":"15-20 days","Certification":"CE\/RoHS\/SGS\/MSDS","Place of Origin":"China","Supply Ability":"1000 sets\/month","Packaging Details":"Corrugated Carton","Model":"RBMS07S2-3-400A720V","BMS type":"4U BMS","Maximum qty of BMUs":"20","Power":"24VDC(18~28V)","Communication protocol":"Rs485, CAN, LAN","Rated Current range":"-250A~250A","Voltage Range":"144V-336V","Package weight":"23kgs"}}

{"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"}}