Fangrui Product Details Fangrui Product Details Fangrui Product Details 1. The Digital Battery Monitor Is Suitable For 7-100v (12v 24v 36v 48v 60v 72v 84v) Lifeo4 Battery, Lead Acid Battery, Agm Battery, Ternary Lithium Ion Battery, Nimh Battery, 18650 Power Battery. 2. Whether It Is Motorcycle, Two-wheel Electric Vehicle, Three-wheel Electric Vehicle, Car, Supercar, As Long As It Is Equipped With Battery, It Can Measure The Percentage Of Residual Voltage. 3. The Battery Monitor Not Waterproof And It Only Be Used For Indoor. 3. Ipx7 Waterproof, Fully Enclosed Shell, Can Be Used In Outdoor Humid Environment. 4. The Red Wire Is Positive And The Black Wire Is Negative. 5. With Buzzer Alarm And Temperature Display --- The Battery Monitor Can Set High And Low Voltage Buzzer Alarm, Short Press M Key To Switch Voltage And Temperature (celsius). 6. With Power-off Memory Function. Supported Battery Types: 1. L Ternary Lithium Battery, Measuring Range From L03 String To L20 String. With Power-off Memory Function 2. P. Lead-acid Battery, Measuring Range From Dc 12v To 24v, 36v, 48v, 60