Hassle-free Replace/Return 7*24H Professional Reply YOOREAL Care Team Is Always There for You Yooreal YR-BI001 & YR-BI003 Digital LED Battery Indicator Meter, Charge and Discharge Monitor, Suitable for Lead Acid Battery (Not Include Trojan Type),Easy to Install,Waterproof rate IP65. There are 3 kinds of colors for the LED bars(1 red, 2 yellow and 7 green)Resolution: 10% per LED segment ProductYR-BI001 & YR-BI003System Voltage12V/24V/36V/48V(depending on model)Operating voltage25% nominal voltageOperation current100mA nominalStorage temperature-10 to 50 Operating temperature-40 to 70 Applicable batteryLead-acid battery(Not include Trojan type)Waterproof rateIP65Product size53*32*24mm( 0.17x0.104x0.078 feet)Accessories listScrew,User manual,Insert spring,Plug spring sheath About the service BI001 Display BI003 Display BI001 & BI003 Screen display Specification