Multicolor 10-bar LED displays state of charge (5 green, 3 yellow, 2 red LEDs). Flashing red LED signals “energy reserve” alarm at 70% discharged. Double flashing red LEDs signal “empty” alarm at 80% discharged. Normally closed relay opens at 80% discharge for lift lockout. This unique holding relay will only lock out at the end of a lift cycle Keyswitch activated LED display, Wide range adjustable discharge profile. Monitors use-time throughout the equipment’s lifespan. Records and displays up to 99,999.9 hours on its LCD, rolls over and continues to count and display. Hour meter LCD remains on as long as battery is connected. Stores latest total in EEPROM nonvolatile memory, without need of power. Operates and displays in temperatures from –40˚C to +65˚C under harsh conditions of vibration, shock, moisture and dust. Model 803 combines in one instrument a completely solid state battery discharge indicator, an LCD hour meter and lift lockout, housed in a 52mm case. Void of moving parts, this combination instrument is exceptionally reliable even in severe operating environments. 52MM 24V 48V Battery Gauge Indicator for Curtis 24 48 Volt 803RB2448BCJ3010 Battery Capacity Monitor Voltage Meter