LiFe² 5120S

This guide covers only the battery's charge and discharge settings. All other configuration and system settings are the integrator's responsibility.

Before programming, the integrator must understand the Power Conversion Equipment (PCE) being used. AERL strongly recommends the PCE manufacturer's training or integration course, where one is available.

The LiFe² 5120S runs in Managed (Comms) or Self-Managed (No Comms) mode. This guide gives the settings for each mode and the minimum number of battery modules for specific inverters and chargers. Read it before you configure the system.

Installers and integrators are responsible for the system design. AERL is not responsible for designs that underperform or do not meet the expected standards.

Settings may change without notice. They are correct at the date of publication.

The minimum number of battery modules ensures that the batteries can support the full output of the connected PCE. In Managed mode, the PCE operates within the battery's limits. In Self-Managed mode, install at least the recommended minimum, or the battery may be operated outside its warranty conditions.

To size a complete LiFe² system (modules, cabinets and charge sources), see the AERL LiFe² 5120S System Sizing Guide, at aerl.com.au.

Follow the LiFe² 5120S Installation and Operation Manual, including all its environmental, installation and battery specifications.

The LiFe² 5120S works with selected inverters and chargers (PCE) in Managed mode, over a CAN bus connection. The battery sends its data to the PCE, which then sets the charge and discharge from the battery's cell temperature and state of charge. Managed mode extends cell life and keeps the State of Charge reporting accurate.

The PCE listed in this section support CAN bus communication. Follow each PCE manufacturer's instructions for connecting a managed battery.

1.1AERL Recommended Minimum Battery Modules

1.2Victron Energy Recommended Minimum Battery Modules

Minimum number of LiFe² 5120S modules per inverter, from Victron's and ZYC's published tables.

1.3Deye Inverter Technology Recommended Minimum Battery Modules

1.4Noark Recommended Minimum Battery Modules

In Self-Managed (No Comms) mode, the LiFe² 5120S works with PCE whose charge settings are programmed by hand. The PCE must allow its charge settings to be set to the battery's requirements.

The battery starts in Managed mode by default. To switch it to Self-Managed mode, double-press the ON/OFF button on the master battery with the battery on: the SOC LEDs flash 3 times to confirm, and the battery remembers the mode after a restart. It returns to Managed mode automatically when a communication cable to the inverter is connected.

This section gives the settings and minimum battery modules for common PCE brands. If your PCE is not listed, contact AERL for its settings.

2.1LiFe² 5120S Basic Charge and Discharge Settings

The battery can discharge to 100% (LiFe² 5120S datasheet and manual). 90% is the recommended setting: it gives a longer cycle life (see the cycle-life curves in the manual).

3.1Selectronic SP PRO Recommended Minimum Battery Modules

3.2Selectronic SP PRO Settings (Self-Managed)

4.1Solis Recommended Minimum Battery Modules

4.2Solis Settings (Self-Managed)

Select Save and Send, then set Environment Temp to Warm.

5.1SMA Sunny Island Recommended Minimum Battery Modules (4.4M, 6.0H and 8.0H)

5.2SMA Sunny Island Settings (Self-Managed)

AERL strongly recommends an external shunt to measure the state of charge: with SMA inverters it improves SOC accuracy. See the SMA manuals for instructions.

5.3SMA Sunny Island Settings Continued (Self-Managed)

AERL strongly recommends an external shunt to measure the state of charge: with SMA inverters it improves SOC accuracy. See the SMA manuals for instructions.

If you have any questions or need support, contact AERL.

Sincerely,

The AERL Team

AERL Pty Ltd · 1/75 Bluestone Circuit, Seventeen Mile Rocks QLD 4073 · 1800 950 865 · [email protected] · aerl.com.au