Direct answer: The first decision is a system-architecture question. Review inverter-side conditions, required usable energy, installation limits, service approach and target-market documentation before advancing a low-voltage or high-voltage route.
Core comparison questions
| Review area | Low-voltage route | High-voltage route |
|---|---|---|
| Typical first question | How should modular batteries and the inverter be paired? | How should the stacked or integrated system match the inverter and phase? |
| Installation review | Rack, parallel, cable and service context | Stack, controller, footprint and installation boundary |
| Evidence review | Exact pair, BMS protocol, wiring and firmware | Exact system identity, inverter support, communication and certificate scope |
Inputs for a residential ESS review
- Backup or self-consumption objective
- Critical loads and expected runtime
- Existing or proposed inverter
- Available installation space and environment
- Required usable-energy range
- Monitoring and target-market documents
Compatibility is a field-level claim
CAN or RS485 wording by itself is not compatibility proof. The selected inverter and battery require two-sided support evidence, protocol and wiring information, firmware conditions and known limitations.
Next step
Use this framework to prepare the requirement, then request current selected-model documents. Category-level guidance does not establish exact compatibility, certification, performance or commercial readiness.