AERL Systems

This guide lists which AERL products work together, and with which third-party inverters, batteries and monitoring equipment. Each row names the AERL document that gives the connection details and settings. Use this guide to choose the equipment; use the named document to install it.

Every combination listed here is covered by a published AERL or manufacturer document. A combination that is not listed may still work, but AERL has not documented it: contact AERL before you design it in.

Settings and firmware requirements can change with third-party firmware. They are correct at the date of publication. Use the latest firmware the manufacturer offers.

Deye, Victron Energy, Selectronic, SP PRO, SP LINK, Solis, SMA, Sunny Island, Noark, Morningstar, Pylontech, Solinteg and other third-party names are trademarks of their respective owners. They are used here only to identify compatible equipment.

How to Read the Tables

1.1Batteries With Inverters and Chargers

The All-In-One battery cabinets are supplied with their Solinteg M2HT inverter, as one system (section 2.4).

1.2Products With AERL Cloud

2.1LiFe² 5120S: Managed (CAN Bus)

The LiFe² 5120S starts in Managed mode by default. The master battery's COMM port carries CAN on pins 4 and 5. Default depth of discharge for every managed inverter: 80% (20% SOC low cut-off).

2.2LiFe² 5120S: Self-Managed (No Comms)

Use Self-Managed mode with inverters and chargers that have no communication link to the battery. Program the charge settings by hand: charge voltage 56 V, maximum charge current 70 A and maximum discharge current 100 A per module, 90% maximum depth of discharge (recommended setting).

The minimum number of modules for each inverter is in the LiFe² System Sizing Guide.

2.3Kakadu 120

The Kakadu 120 (140.8 V nominal) needs an AERL Nexus Gateway on its CAN bus, and is designed for DC coupling with the CoolMax SRX 120 V.

2.4All-In-One and Solinteg M2HT Batteries

The All-In-One is supplied with its own Solinteg battery cabinet and needs no other battery:

For a Solinteg M2HT 75–125 kW sold on its own (grid connection pending CEC listing), contact AERL. A Solinteg M2HT 25–50 kW inverter sold on its own works only with high-voltage LFP batteries with a BMS on Solinteg's compatibility list, connected over CAN, within its 150–840 V battery range. These are the batteries Solinteg lists for the M2HT 25–50 kW (Solinteg compatibility list Ver. 2.03, 22 July 2025):

Unlisted batteries

Solinteg states that a battery not on its list voids the inverter warranty, unless Solinteg has issued a compatibility statement for it. Solinteg updates its list from time to time: check with AERL that a battery is still listed before you order it.

3.1Batteries

The SRX default charge profile suits a generic LiFePO4 battery. AERL supports most other chemistries that do not need external BMS communication. The SRX-R 600/30-120 and SRX 600/30-120 are for 120 V batteries only.

3.2Inverters (DC Coupling)

The SRX does not communicate with third-party inverters. It charges the battery directly, and the inverter shares the battery.

Other charge controllers

Do not connect CoolMax controllers in parallel with third-party charge controllers.

3.3Communications

4.1AERL Nexus Gateway

The Nexus connects equipment to AERL Cloud. It finds supported devices on its CAN bus by itself; a Modbus or SNMP device is set up on the gateway in AERL Cloud (one of each per gateway).

The authoritative, current list is in the AERL Cloud documentation at docs.aerl.cloud. The Nexus CAN ports run at a fixed 500 kbps: every device on the bus must use 500 kbps. The two CAN sockets are linked inside the Nexus and have no built-in termination: at an end of the bus, fit a 120 Ω plug in the spare socket.

4.2Battery Sense

The AERL Battery Sense gives a CoolMax SRX the battery's temperature and voltage, for banks without a BMS that reports them. It plugs into a CANBUS port on the SRX (which powers it at 5 V; turn the SRX's CANBUS 5 V switch on), on cable up to 10 m, and measures 18–200 Vdc.

4.3EarthGuard EG-600 and EG-600-SC

The EarthGuard monitors insulation on DC circuits from 40 Vdc to 600 Vdc (two circuits on the EG-600, one on the EG-600-SC), powered from 12–60 Vdc. All AERL products are compatible. Third-party equipment listed in the EarthGuard manuals:

• Selectronic SP Pro Series 1, 2 & 2i
• Victron SmartSolar & BlueSolar MPPT Series
• Victron MultiPlus & Quattro Series
• Morningstar TriStar Series

For other equipment, check the device's earth-leakage specification before installation. Some third-party devices can exceed the permissible leakage and trip the EarthGuard. The alarm relays (dry contact, normally open, fail-safe) can signal a monitoring input such as a Victron Cerbo GX relay input.

4.4CoolPro CP30

The CoolPro CP30 Meter Board connects to the Nexus RS485 Modbus port for AERL Cloud monitoring (CoolPro User Manual and CoolPro Modbus RTU Communications Protocol).

6.1Using Unlisted Equipment

Third-party equipment must be installed and set up as its manufacturer instructs. Damage caused by incompatible equipment or by settings outside a battery's specification is not covered by AERL's warranties: see each product's warranty statement, at aerl.com.au. For Solinteg inverters, an unlisted battery voids the inverter warranty.

6.2Support

Before you contact AERL about a combination, note the equipment models and firmware versions. Contact AERL support on 1800 950 865 or [email protected].

6.3Change Log