Pro36FRCX 36 Volt Battery Gauge, Status Indicator w/relay output - Golf Cart * Not for use with Exide, Trojan, Interstate, AGM Batteries or Walmart batteries. Order PRO36FRC-R for those batteries *Check voltage compatibility below before ordering *If you have the above type batteries, you need to order PRO36FRC-R *Warns when 30% of charge is left - Indicator displays Yellow * Red/Yellow flashing LED at 10% remaining charge