# Lesson 02: Hybrid Inverter RFQ Briefing

## Stop comparing hybrid inverters by kW before compatibility is clear

Hybrid inverter sourcing can look simple from the outside: compare 5kW, 10kW, 20kW or 50kW products and ask for price.

In practice, the buyer needs to clarify country, grid, battery compatibility, BMS protocol, PV input, backup behavior, monitoring, warranty and service boundary before comparing offers.

## Who should use this lesson

1. Overseas buyers comparing Chinese hybrid inverter suppliers.
2. Installers or distributors preparing a cleaner RFQ.
3. Chinese suppliers preparing a buyer-readable product evidence pack.
4. Local partners who need to understand what information buyers will ask for.

## 45-minute structure

| Time | Topic | Output |
|---|---|---|
| 0-5 min | Why kW-only RFQs fail | Buyer understands hidden variables |
| 5-15 min | Grid, country and phase type | Target-market requirements list |
| 15-25 min | Battery compatibility and BMS | Compatibility questions |
| 25-32 min | PV input, backup and parallel operation | System boundary checklist |
| 32-38 min | Monitoring, warranty and service | After-sales evidence list |
| 38-45 min | RFQ field list and next step | Buyer request or supplier evidence pack |

## Buyer assignment

Prepare one target RFQ with:

1. Country or region.
2. Single-phase or three-phase.
3. Target power range.
4. Battery voltage or battery system.
5. Backup requirement.
6. Monitoring requirement.
7. Warranty and service expectation.

## Supplier assignment

Prepare one product line with:

1. Model matrix and datasheets.
2. Certificate list with model mapping.
3. Battery compatibility list and BMS protocol notes.
4. PV input, backup and parallel operation details.
5. Monitoring screenshots or platform notes.
6. Warranty terms and service boundary.
7. Public-use image permission.

## Boundary

This lesson is for RFQ preparation and evidence discipline. It is not certification, supplier recommendation, price quotation or order commitment.