Single Battery Installation Procedure

ELECTRIC SHOCK AND FIRE HAZARD

Take precautions to avoid bridging the terminals.
Do not contact the terminals with metal mountings, fixtures, or body parts.

Failure to follow these instructions may result in injury.

Install equipment following the standards set by the local authority having jurisdiction. The following instructions assume the battery and DC load have been attached to the wall.

Disconnect the cover plate protecting the positive and negative terminals.
Prepare the load and battery for wiring.
1. If the load is wired to a power source, open the disconnect and set the load OFF.
2. Use a DMM or other voltage measuring device to confirm the circuit is de-energized.
3. If the circuit in which the battery is installed has a disconnect, open the disconnect to isolate the battery.
4. Set both the battery BMS and the breaker to the OFF position.
5. Use a DMM or other voltage measuring device to confirm the circuit is de-energized.
Wire the load.
Use the HELIOS ESS Terminal Connector Set (950-0072) with 2/0 AWG (70 mm²) cables and appropriately sized ring terminals to create your own battery cables.
Or alternately, you can use the Battery to Inverter Power Cables 2/0 AWG (950-0070) to wire the batteries. Select the cable that is compatible with the expected power load.
1. Ensure the cable connections are clean and in working order.
2. If required by the system, connect a circuit breaker between the load and battery.
3. Connect a positive power cable to the positive battery terminal on the load, and the other end of the power cable to the positive terminal on the circuit breaker.
  Connect a negative power cable to the negative terminal on the load, and the other end of the power cable to the negative terminal on the circuit breaker.
4. Connect the positive battery cable to the opposite positive terminal on the circuit breaker.
  Connect the negative battery cable to the opposite negative terminal on the circuit breaker.

NOTE
The breakers should be sized to protect the conductors between the battery and the load. If the breaker housed in the inverter is sufficient for the intended application, an external breaker may not be required. Refer to your Local Authority Having Jurisdiction for guidance.

Wiring for One Battery

NOTE
For multiple battery installation diagrams, refer to <link>Multiple Battery Installation Procedure (Parallel Wiring Kit) or More Than Three Battery Installation Procedure (Busbar).

Connect the positive battery cables to the receiving pins of the positive battery terminals and push down to enable the connection. Refer to 9.4.3 Terminal Connections and Hardware.

Connect Cables to Battery Terminals

Connect the negative battery cables to the receiving pins of the negative battery terminals and push down to enable the connection.
Connect the CAN communication cable. See Setting Up Closed-Loop Communication with the LYNK II Gateway or Setting Up Closed-Loop Communication Without the LYNK II Gateway.
Set the battery breaker ON (close).
Close the circuit breaker if it is open.
Set the battery BMS ON (ON/OFF key).
Re-attach the cover plate to protect the positive and negative battery terminals and to prevent the disconnection of sockets and terminals during operation.

NOTICE

Avoid short circuits. Short circuits will damage the battery and void the warranty.
Failure to securely lock the ends of battery cables to the receiving pins on the battery will increase resistance and lower voltage, leading to burnout of the terminals and voiding of the warranty.
Some inverter-chargers support temperature-compensated charging. Disable temperature-compensated charging on the charger or inverter.
Do not use or install a battery temperature sensor.