CUSTOM MARINE PRODUCTS MPPT Controller Charging Two Battery Banks Instruction Manual

MPPT Controller Charging Two Battery Banks

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Product Information

Specifications:

• Product Name: Solar Panel Installation Kit

• Controller Type: MPPT or PWM Dual Output Controller

• Number of Solar Panels: Varies based on installation
  configuration

• Compatible Battery Banks: 1 or 2 battery banks

• Optional Accessories: Remote Meter, Temperature Sensor, Battery
  Monitor, Inverter/Charger

Product Usage Instructions

Single Solar Panel Installation with DuoRacer Dual Output

Controller Charging Two Battery Banks:

1. Attach controller to battery banks first and to solar panels
   second.

2. Connect the on/off switch or breaker.

3. (Optional) Install the Remote Meter.

Two Solar Panels Wired in Parallel with DuoRacer MPPT Dual

Output Controller Charging Two Battery Banks:

1. Use MC4 T-branch connectors to wire the panels in
   parallel.

2. Connect the controller to the battery banks first and then to
   the solar panels.

3. Add optional accessories like the on/off switch and MT11
   Meter.

Frequently Asked Questions (FAQ)

Q: Can I install more than two battery banks with this

product?

A: The product is designed to charge one or two battery banks
only. Installing more than two may affect performance and is not
recommended.

Q: Do I need a temperature sensor for proper operation?

A: While a temperature sensor is optional, it can help optimize
charging efficiency, especially in varying temperature
conditions.

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Single Solar Panel Installation with DuoRacer Dual Output Controller Charging Two Battery Banks

On/off switch or breaker

Optional

–

Remote

Meter

House

Start

Attach controller to battery banks first and to solar panels second.

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Two Solar Panels Wired in Parallel with DuoRacer MPPT Dual Output Controller Charging Two Battery Banks

MC4 T-branch Connectors

+ –
+ –

On/off switch

+ –

Optional MT11 Meter

Optional Temperature Sensor
House Bank (Batt1)
Note: If a battery monitor is installed, negative wire from controller should be connected to the house side of the battery monitor shunt, not the battery bank.

Start Battery (Batt2) custommarineproducts.com

Three Solar Panels in Parallel with a DuoRacer Dual Output Controller Charging Two Battery Banks
+ –

–

–

+ –

House

Start
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Two Solar Panels Wired in Parallel with a PWM Dual Output Controller Charging Two Battery Banks

+ –
+ –
+ –

MC4 T-branch Connectors On/off switch

Attach controller to battery banks first and to solar panels second.

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Single Solar Panel Installation with EP Xtra-N MPPT Controller Charging One Battery Bank
+ –
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Two Solar Panels Wired in Series with Xtra-N MPPT Controller Charging a Single Battery Bank

+ –
MC4 Connectors

Solar wire with MC4 preinstalled 20 amp switch
Optional MT50 Meter
+ –
20 amp fuse

+ –
Temperature Sensor (optional)

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Two Solar Panels Wired in Parallel with Tracer MPPT Controller Charging a Single Battery Bank

+ –

2-1 MC4 T-branch connector 20 amp switch

+ –

• –
  Note: If a battery monitor is installed, negative wire from controller should be connected to the house side of the battery monitor shunt, not the battery bank.

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+ –

Two Solar Panels Wired in Parallel with a Battery Monitor
Solar System Monitor

Bluetooth BMS App

+ –

–

Battery Monitor Shunt

Battery Monitor

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Two Solar Panels Wired in Parallel with a Battery Monitor and MultiPlus Inverter/Charger
Solar System Monitor

• –

Bluetooth BMS App

LiFePO4 Battery Bank

DC Panel
–
Battery Monitor Shunt

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Shore Power

Inverter/Charger

AC Panel

Two Solar Panels Wired in Parallel with Two EP Xtra-N MPPT Controllers
+ –
+ –
To temp sensor attached to battery
+ –
+ –
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Two Solar Panels Wired in Parallel with Two EP Xtra-N Controllers With a Battery Monitor

• + –

**Shunt for battery monitor Negative wires from controllers go to house side of shunt.

To temp sensor attached to battery

• + –

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Ten Solar Panels Wired in Parallel with Two Victron MPPT Controllers

2-1+MC4 T-branch –
3-1 MC4 T-branch

Alternative Single Meter

2-1+MC4 T-branch –
3-1 MC4 T-branch
Temperature sensor attached to battery
Place a 10 amp fuse in the positive line for each panel at the MC4 T branch.

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Ten Solar Panels Wired in Parallel with Two Victron MPPT Controllers

Buss Bar +

Alternative Single Meter

–

• –
  Place a 10 amp inline fuse in the positive line for each panel at the MC4 T branch.

Temperature sensor attached to battery

Battery Monitor Shunt (if used)

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Four Solar Panels Wired in Parallel with Two EP Tracer BN MPPT Controllers With a Battery Monitor

+ –
+ –

**Shunt for battery monitor Negative wires from controllers go to house side of shunt.
+ –
To temp sensor attached to battery

+ –
+ –
+ –

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Four Solar Panels Wired in Parallel with One EP Tracer BN MPPT Controller
2-1 MC4 T-branch connector

+ –

Note: If a battery monitor is installed, negative wire from controller should be connected to the house side of the battery monitor shunt, not the battery bank.

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Four Solar Panels Wired in Parallel with One EP Dual Output Controller
2-1 MC4 T-branch connector

+ –

Note: If a battery monitor is installed, negative wire from controller should be connected to the house side of the battery monitor shunt, not the battery bank.

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Four Solar Panels Wired Two in Series and Group in Parallel with a Victron MPPT Controller

MC4 connectors

2-1 MC4 T-branch connector

+ –

Note: If a battery monitor is installed, negative wire from controller should be connected to the house side of the battery monitor shunt, not the battery bank.

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Three Solar Panels Wired in Parallel with One MPPT Controller

+ –

3-1 MC4 T-branch connector

–

–

• –
  Note: If a battery monitor is installed, negative wire from controller should be connected to the house side of the battery monitor shunt, not the battery bank.

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Solar panel array Pole or canvas mounted

Auxiliary 130 watt semi-flexible panel

2-1 T-branch MC4 connectors
+ –

Tracer MPPT solar controller

Wiring diagram showing connection of an auxiliary 130 watt solar panel when extra power is needed.

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Double Pull Double Throw Switch

Boost Controller

24V Thruster Bank

+ –
+ –

T-branch MC4 connectors
+ –

House Bank

Starting Bank
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Two Solar Panels Wired in Series with Victron MPPT Controller Charging a 24V Battery Bank

+ –
MC4 connectors

20 amp switch
Optional Meter
+ –

–

Eight Solar Panels Wired Two in Series and Four Series Sets in Parallel with a Victron MPPT Controller
10-15 amp inline fuse Busbars

Note: If a battery monitor is installed, negative wire from controller should be connected to the house side of the battery monitor shunt, not the battery bank.

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Wiring a Victron Orion DC-DC Charger Used with an AGM start and LiFePO4 House Battery Bank
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The Victron ARGO FET Battery Isolator enables the charging of three isolated battery banks.
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