Legend
ACR OPEN - Batteries are Isolated
ACR COMBINED - Batteries are connected and both charging.
ACR OPEN - Batteries are Isolated
ACR COMBINED - Batteries are connected and both charging.
- ACR relay is open and batteries are isolated. Voltage begins to rise slowly after engine starts or battery charger is turned on.
- When voltage rises to COMBINE voltage set on ACR 13.5V in this example, ACR relay closes, connecting and charging both batteries.
- When engine stops or battery charger is turned off, voltage rapidly begins falling.
- When voltage falls to 6% less than COMBINE voltage 13.5V less 6% = 12.7V in this example, ACR relay opens, isolating batteries, after 1 minute.
