136 / 148
136
A P P E N D I X
Battery Management
Wiring Schematics
for Typical
Applications
Batteries are at the heart of the
electrical system found on any boat or
vehicle. Proper battery management,
including switching and charging,
is essential for safe and reliable
operation. The following wiring diagrams
show how batteries, battery switches,
and Automatic Charging Relays are
wired together from a simple 1 battery -
1 engine configuration to a 4 battery - 2
engine - 1 generator system.
For more detailed wiring guidelines
please consult a qualified marine
electrician or one of the many books
available on the subject.
Note: The ACRs pictured are representative of any
ACR. The battery switches are representative of any
Battery Switch of the same model.
1 Battery - 1 Engine
2 Battery - 1 Engine
Switches a single battery to a
single load group.
ON-OFF Battery Switch
Simultaneously switches two isolated
batterybanks or combines battery banks
to all loads.
1 Dual Circuit Plus™ Battery Switch
1 Automatic Charging Relay
Can isolate a failed battery.
3 ON-OFF Battery Switches
1 Automatic Charging Relay
Note:
Uses same style batteries
2 Battery - 2 Engine
House battery is shared with one engine.
One engine battery is in reserve.
2 Selector Battery Switches
1 Automatic Charging Relay
Engines share one battery. House battery is in reserve.
1 Dual Circuit Plus™ Battery Switch
1 Automatic Charging Relay
Can isolate a failed battery.
3 ON-OFF Battery Switches
1 Automatic Charging Relay
Normal - Set all switches to position 1
Parallel - Set all switches to position 1+2
Isolate - Set Load switch to Position 2 and
Source Switch to position 1+2
Saves battery power for starting.
1 ON-OFF Battery Switch
1 Low Voltage Disconnect
Switches isolated battery banks to all loads
or combines battery banks to all loads.
1 Selector Battery Switch
1 Automatic Charging Relay
The diagram above is intended for reference only. Consult an ABYC certified marine electrical professional for system design and circuit protection.
House
Start
Engine
Start
Stereo
LVD
Battery Switch
Engine
ACR
Start
House
House
Engine
ACR
House
House
Engine
Start
ACR
Start
House
House
Engine
ACR
House
Start
Start/
House
Engine
Engine
ACR
Start
House
House
Engine
Engine
ACR
Start
House
House
Engine
Engine