A defensible comparison of Qbits, Deye starts with exact model numbers. Brand-level scores hide differences between product families, firmware versions, accessories, warranty documents, sellers, and local service arrangements. This page does not declare a universal winner because the current official India documents for every compared SKU are not available in one place.
Warranty and service terms Qbits public datasheets describe an expandable warranty but do not define a universal duration, remedy, registration deadline, service deadline, labour coverage, transport responsibility, or exclusions. Obtain the current written terms for the exact model and sale. The same document standard should be applied to every competing brand.
What can be verified for Qbits
The Qbits datasheet library contains model-specific documents for on-grid and hybrid families. Those documents publish rated power, phase, MPPT configuration, DC voltage limits, maximum efficiency, enclosure rating, and communication options. Values differ by family, so a specification from one Qbits model must not be applied to another.
Qbits’ public documents do not state a universal replacement remedy, a fixed response time, a universal WhatsApp or AI-monitoring feature, or a single grid-voltage window across the range. Request the current installation manual, certificate, battery compatibility statement where relevant, and written warranty for the exact SKU.
What to collect for every brand
| Document | What to check | Why it matters |
|---|---|---|
| Current model datasheet | Rated power, phase, MPPT count, current and voltage limits, derating, IP rating | Confirms electrical and environmental fit |
| Installation manual | Clearances, protection devices, earthing, shutdown and commissioning steps | Controls safe installation |
| Current certificates | Exact legal entity, model coverage, standard, issue and expiry status | A logo or generic claim does not cover a specific model |
| Written warranty | Duration, remedy, registration, exclusions, labour, freight and transferability | A headline number does not define coverage |
| Monitoring documentation | Logger, app, account ownership, data fields, alert route and connectivity | Features may need accessories or configuration |
| Service terms | Ticket route, responsible party, location coverage, charges and target times | Dealer presence is not the same as a contractual SLA |
| Commercial quote | Exact SKU, tax, accessories, delivery, commissioning and validity | Brand-level price ranges become stale quickly |
How to compare the electrical design
Start with the array, not the logo. Check maximum string open-circuit voltage at the site’s minimum design temperature, operating voltage inside the MPPT window, current per MPPT, permitted strings per tracker, and AC phase and capacity. A qualified designer should validate those values against the exact module and inverter documents.
For hybrid equipment, obtain written confirmation for the exact battery model, nominal voltage, current limit, BMS protocol, backup output, transfer behaviour, black-start behaviour, and operating modes. “Lithium compatible” alone does not guarantee interoperability.
How to compare warranty and service
Compare the signed or supplied warranty document, not the marketing headline. Record who accepts a claim, what evidence is required, whether the remedy is repair, replacement, credit, or another option, who pays removal and transport, whether labour is included, and which events are excluded. Ask the seller to identify the document version in the quotation.
Local service also needs written evidence. Confirm the entity responsible for the site, the ticket channel, working hours, parts route, chargeable travel, and any response target. A directory entry or salesperson’s message should not be treated as a guaranteed outcome.
Monitoring and data questions
Confirm which app or portal serves the exact model, whether a logger or SIM is required, who owns the plant account, how often data updates, which faults create alerts, how long history is retained, where data is processed, and how access can be transferred. Qbits publishes iOS and Android app listings, but that alone does not confirm every feature for every model.
Compliance in India
MNRE’s current ALMM page publishes lists for solar PV modules and cells, not an inverter list. Verify inverter certificates and scheme or DISCOM requirements separately. Obtain the exact inverter certificates requested by the applicable scheme, tender, utility, DISCOM, or authority. Do not accept a statement that a particular model is eligible without those documents.
A fair decision rule
Choose the exact model that passes the electrical design, safety, certificate, warranty, service, monitoring, and commercial checks for the project. If a seller cannot supply a controlling document for a load-bearing promise, record that item as unconfirmed and do not award it points.
For Qbits, begin with the product catalogue and request the current model documents. For another brand, request the same document set from its official India entity or authorised seller.
Frequently Asked Questions
Which is better, Qbits, Deye?
Does Qbits have a universal warranty or service deadline?
Does ALMM list solar inverters?
Qbits Editorial
The Qbits Energy editorial team writes about solar inverters, battery storage, and the hardware powering India's energy transition.