Runleader RL-BI069B LED Battery Level Meter, Low Battery Alert, Works with 12V 24V 36V 48V Trojan Lead Acid Gel AGM Graphene LiFePO4 Lithium Batteries, Fits Golf Cart, Forklift, RV and Solar System

["WIDE BATTERY COMPATIBILITY: This meter supports DC 12V, 24V, 36V and 48V power systems. It is compatible with Trojan, Lead Acid, GEL, AGM, Graphene, LiFePO4 and 18650 lithium batteries, and also allows customization for special battery models","LED BATTERY LEVEL DISPLAY: Features 10-segment LED bars for real-time battery level readout. Switch display modes easily with the rear button: all red, all green, 1 red+2 yellow+7 green and 2 red+3 yellow+5 green","LOW BATTERY ALERT: LED flashes when remaining power drops below 10%, reminding you to charge timely and protect batteries from over-discharge","EASY INSTALLATION & WIRING: Designed for simple drill-in mounting with a standard cutout size of φ51.5mm (approx. 2.03 inches). Equipped with an 8-hole connector for quick positive and negative pole connection, plug and play for easy setup","WATERPROOF DESIGN: IP65 water resistance for protection against splashing water"]