Application Batteries‌ — The digital battery tester supports 7-100V batteries (12V, 24V, 36V, 48V, 60V, 72V, 84V), including Li-NMC (ternary lithium), lead-acid, AGM, and LiFePO4 batteries. Default setting for 12V lead-acid batteries. ‌Application Scope‌：The battery monitor can be used to test battery voltage and capacity for electric motorcycles, motorcycles, golf carts, cars, boats, RVs, yachts, and other vehicles. Protection‌&Safety：The smart battery monitor features a fully sealed protective casing with ‌IP67 dustproof‌ and ‌IPX7 waterproof‌ ratings, suitable for both indoor and outdoor use.Product with reverse polarity protection to prevent damage from incorrect input connections. ‌Installation‌‌--Wiring‌: Red wire connects to the positive terminal; black wire to the negative terminal. ‌Convenience‌: Includes 15.75-inch cables, mounting brackets, double-sided tape, and screws for installing conveniently. Power-Off Memory‌：The battery tester retains all settings even during power interruptions, ensuring seamless resumption of operation. Alarm & Temperature --Custom Alarm‌: it can set low-voltage or high-voltage buzzer alarms. ‌Temperature Display‌: Short-press the “M” button to toggle between real-time voltage and temperature readings (in Celsius). Multicolored LCD Display-- We have upgraded the clarity of the LCD ，it can be clearly displayed even in direct sunlight. Note‌:After receiving the product, you need to make a simple initial setup as per the manual. Failure to do so will result in the battery percentage remaining at 100%.