One Inverter, Two AES 210HV

When two AES 210HV cabinets are paired with a single Solis S6-EH3P inverter, total available energy increases to approximately 418 kWh usable, while discharge power remains limited by the inverter’s output rating. Each cabinet operates independently, and the inverter draws from both equally within its limits.

These runtimes assume continuous full-power discharge at the inverter's rated limit. While the inverter determines the maximum power output, the dual-cabinet setup extends runtime. Dual cabinets increase total stored energy and are ideal for longer-duration backup or deeper cycling in time-of-use and peak-shaving applications.

System Scalability – One Inverter, Two AES 210HV

Each Solis S6-EH3P inverter can be paired with two AES 210HV battery cabinets, doubling the usable energy per inverter while maintaining discharge power based on inverter size. This setup supports:

• 418 kWh of usable backup energy per inverter (2 × 209 kWh)

• The inverter model (30–60 kW) limits discharge power.

On the backup side, up to six inverters can be connected in parallel, supporting up to 360 kW of backup power and up to 2.5 MWh of total backup energy (6 × 418 kWh).

Grid-Tied (Non-Backup) Scalability

For grid-tied applications, the number of batteries or inverters is not limited. Each inverter operates independently, enabling large-scale deployments for energy arbitrage, load shifting, or demand charge reduction without backup power constraints.

DC Battery Wiring – One Inverter, Two AES 210HV

When connecting two AES 210HV battery cabinets to a single Solis S6-EH3P inverter, each cabinet is wired to a dedicated battery input terminal:

• Battery 1 connects to the inverter’s BAT1 terminals

• Battery 2 connects to the inverter’s BAT2 terminals

The inverter’s integrated dual DC/DC converters are independently fused and control each input, allowing the inverter to manage each battery cabinet separately while balancing charge and discharge as needed.

Use two positive and two negative #4 AWG conductors per cabinet, with each conductor protected by a 70 A fuse inside the AES 210HV’s integrated DC distribution box. This configuration aligns with the Solis inverter’s dual 70 A battery input design and balances current flow for safe operation.

Always follow NEC guidelines for conductor sizing, 1,000 VDC insulation rating, proper torque values, and verify polarity before energizing the system.

Communication – One Inverter, Two AES 210HV

Each AES 210HV cabinet uses its own LYNK II Gateway for closed-loop communication with the Solis inverter in a two-to-one configuration. The inverter’s two BMS ports (BMS1 and BMS2) allow it to communicate with each battery independently.

Wiring setup:

• Use two CAT5 or CAT6 Ethernet cables, wired straight-through with RJ45 connectors

• Connect one cable from LYNK II #1 to the Solis inverter’s BMS1 port

• Connect the second cable from LYNK II #2 to the BMS2 port

This setup enables the inverter to independently manage and monitor both battery cabinets, receiving real-time data for state of charge, voltage, current, temperature, and charge/discharge limits from each LYNK II Gateway. Two independent LYNK II Gateways ensure precise, safe, and optimized performance across both battery units.