Step 6: Move From Backup Experience to Battery Capacity
After the backup expectation is clear, the customer chooses a battery capacity category.
The form gives practical bands: 2.4–2.56 kWh entry backup, 5.0–5.12 kWh popular home backup, 7.5 kWh stronger residential backup, 10–10.24 kWh comfort backup, 12–16 kWh premium home or office backup, 20 kWh plus heavy backup, 100 kWh commercial ESS, or Zorays Solar to size after load sheet.
This structure educates the customer.
It helps the customer understand that battery planning is about usable energy, not just brand name. It also helps the technical team identify whether the customer is thinking about a small safety net, a serious home backup system, an office continuity solution, or a commercial energy storage project.
Lithium batteries are not decoration. They are system-defining components. Their capacity, voltage, battery management system, compatibility, warranty, IP rating, cycle life, and pairing with the inverter affect the entire experience.
Step 7: Keep Battery Brand Preference Optional
The next step asks for battery brand preference, but it remains optional.
That is the right structure.
Customers may already have brand comfort with EASUN, SES, Photon, Narada, Didu, FOX, Huawei, KSTAR, Dyness, Inverex, PylonTech, Sunwoda, or other market options. Their preference should be respected. But technical compatibility should not be sacrificed.
The final battery recommendation must consider inverter pairing, communication protocol, support, warranty, available stock, discharge needs, installation environment, and whether the project is residential, commercial, or industrial.
A customer can prefer a brand. The system must still be engineered.
Step 8: Separate Commercial ESS From Ordinary Home Backup
The merged journey also allows larger ESS or premium battery preferences.
This includes options such as KSTAR ESS combinations, Huawei hybrid battery ecosystems, FOX high-voltage storage, SES larger lithium options, and KSTAR 50 kW with 100 kWh ESS.
This is necessary because commercial and premium residential storage should not be forced into a small-home battery logic. A clinic, office, school, warehouse, or commercial operation may need structured backup, heavier inverter support, larger battery banks, future expansion, and better monitoring.
Commercial ESS is not just a bigger battery. It is a different planning category.
