The AGVB features a 10-year warranty. The La Marche Model AGVB is a microprocessor controlled SCR battery charger which was specifically designed to be used with electric-guided vehicle batteries. The AGVB programming produces precise charge curve and charge time necessary for opportunity charging applications. The built-in microprocessor senses various conditions such as battery voltage, AC line voltage, charging current, elapsed time and operator inputs, hundreds of times per second, and controls the SCR regulator for perfect charge cycles. The AGVB automatically starts 0.5 seconds after a battery connection is sensed. When a battery disconnect is sensed the AGVB automatically shuts off within 2 seconds.