BatteryList message in JSON format
{ "BatteryList":[{ "Battery":{ "id": , /*required, integer type, battery No.*/ "status":"", /*optional, string type, storage battery status, "normal", "miss"-battery loss*/ "percent": , /*optional, integer type, power percentage, unit: %*/ "voltage": /*optional, integer type, battery voltage, unit: V*/ } }] }