The controller shall be capable of being programmed from battery power only (except manual operations). The controller shall have a lithium battery back-up storing programs without AC power for up to five years.The controller shall have three independent programs designated "A", "B", and "C". Each program shall have up to three independent start times. Each program shall have an independently programmable watering schedule. Each program shall have an independently programmable watering schedule from 1 minute to 3 hours 59 minutes. There shall be four types of scheduling, Daily (7 water days), Odd/Even, Interval, and Event Day. Daily scheduling shall determine which days of the week to water. Odd/Even scheduling shall water only on odd or even days (i.e. an odd schedule will water on the 31st and 1st). Interval scheduling shall specify how many days between watering (from 1 to 30 days). Interval scheduling shall allow the start date for the schedule to be programmed up to 30 days out. Event Day scheduling shall block any day from watering. The controller shall have a % Water Budget feature that allows modification on an entire program's run time from 5% to 200% in 1% increments.