Pro48FRCX 48 Volt Battery Gauge, Status Indicator w/relay output - Golf Cart * Not for use with Exide, Trojan, Interstate, AGM batteries or Walmart batteries. Order PRO12-48R for those batteries * Check compatibility before ordering. See Description below. * Warns when 30% of charge is left - Indicator displays Yellow * Red/Yellow flashing LED at 10% remaining charge * Must be connected during charging cycle