Battery Indicator System Including:Current voltage display,Delay Display Function,Charging voltage settable,Delay time of rising and falling,Overvoltage and undervoltage error notice,etc. Hour Meter System Including: Total running hours TOT, partial timer PAr, remain battery service time. etc Design Including: LED + LCD,data stored automatically after disconnecting with the battery,etc. This battery indicator with hour meter has 10 segment LED graph display of battery indicator and 6 digit LCD display of hour meter , partial time and voltage. Two kinds of display work together to help know the battery state obviously. Special Features: hour meter/battery indicator Item Weight: 108g Battery Indicator suits for all lead acid storage battery,GEL, , LiFeO4 and other battery.It has 19 types of set data and also user can set data by themselves. Undervoltage and overvoltage error notice work to help know the battery well and protect the battery. Delay time of very bar set to avoid display up and down to quick. This battery indicator has a delay time of rising and falling to avoid wrong display about battery level. To maintain the battery, this battery indicator function designed with recognition false battery charging signal. Only when the charging voltage higher than definited voltage more than 200s make the battery level full. This battery indicator designed with a function which battery level can only be down no up. This make the battery indicator not always up and down sharply.As we all know without charging, battery level not up or full. This hour meter record equipment's total running hours and partial time. The hour meter shows total hours and partial time accumulated. And partial time can be reset. Remain battery service time can be set by user to know when to charge the battery well. colour:black Material:plastic size:56*65(mm) Package Contents: 1 x Battery Gauge Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.