· APPLICATION --- The battery testers can be used for testing battery voltage and capacity for electric motorcycle, motorcycle，golf cart,automotive , car, marine, RV, boat, etc. · APPLICABLE BATTERY --- SUPNOVA digital battery monitor is suitable for 7-100V (12v 24v 36v 48v 60v 72v 84v) Ternary lithium battery, lead-acid battery, lithium iron phosphate battery. Default 12 volt lead acid battery . · PROTECTION ---·Fully closed shell and IPX7 waterproof ,dustproof it can be used for indoor and outdoor, input reverse connection protectionIt does not generate heat even when used at high voltages for a long time. INSTALLATION ---The red wires for the positive and the black wires for the negative. It can use Double-sided adhesive we provided stick the back on the product .The wires length are 15.75 inches . Buzzer Alarm&Ttemperature--- The battery monitor can set low and high voltage buzzer alarm and short press"M"key can switch voltage and temperature（Celsius). Power-off Memory--The battery tester with power-off memory function,it can retain settings when power is removed. Our battery monitor use high-end chip, and the voltage test range is 7-100V, 12V,36V,48V,60V,72V and 84V batteries can be used，It does not generate heat even when used at high voltages with high safety . It not only accurately test the voltage, the remaining capacity of electricity, show the percentage of capacity with the memory of power-off but also it with low and high voltage buzzer alarm.The battery tester with power-off memory function,it can retain settings when power is removed. This product is independently developed and produced by our company and is suitable for various instruments, car, golf cart,portable and convenient equipment, medical equipment, Electric bikes Motorcycles Boat etc. The products have obtained CE certification.