How do I know if a Chinese EV charger supplier is a real factory?

Ask for the business licence and check that its scope includes manufacturing; ask for a live video walk-through of the assembly line, test area and warehouse; and check that the company name on certificates and test reports matches the company you will pay. Traders often show product photos but cannot show production or ageing tests on request.

What certificates should an EV charger manufacturer have?

It depends on the market: CE (with LVD and EMC test reports) and often UKCA or TÜV marks for IEC markets; UL or ETL listing and ENERGY STAR for North America; plus ISO 9001 for the factory. Certificates must name the exact model you buy.

What is a reasonable MOQ for EV chargers?

MOQ varies by product and customisation. Standard models with a logo change usually have low minimums; new housings, new electronics or new certifications need larger orders to cover tooling and testing. Ask the manufacturer to separate the MOQ for a standard model from the MOQ for a custom one.

How long should an EV charger warranty be?

Two years is a common standard warranty for chargers; some suppliers offer extensions for power modules or for whole units on service contracts. Read what is excluded — installation faults, surge damage and wear parts such as cables and connectors are typical exclusions.

Should I choose the cheapest EV charger quotation?

Not without comparing line by line. Quotations differ in cable length, metering class, RFID, connectivity modules, protection devices, packaging, spare parts and warranty. Compare the five-year cost, including failures and downtime, not the unit price alone.

Sourcing from China

How to Choose an EV Charger Manufacturer: 15 Checks Before You Sign

A practical checklist for choosing an EV charger manufacturer: company, product, certification, commercial and support checks, a scoring sheet and red flags.

Prepared by: VULTAE Engineering Team
Published: October 4, 2026
Reading time: 5 min
Sources: 4 references

Key takeaways

1Judge a manufacturer on four things: the company (is it really a factory?), the product (certified model, power electronics, operating limits), the commercial terms (MOQ, lead time, payment, warranty) and the support (spare parts, firmware, training).
2Certificates are issued for a specific model and factory. Check the model number on the certificate against the one on your quotation.
3Ask for an OCPP test with your own charge point management system before the bulk order — “OCPP supported” on a datasheet is not enough.
4Use a weighted score sheet so the cheapest quotation does not win by default; total cost over five years matters more than unit price.

Two different AC wallbox samples with Type 2 cables on a workbench next to a caliper, tape measure and multimeter

Contents

01The 15 checks
02A process that narrows 20 suppliers to one
03A weighted score sheet
04Red flags
05What to ask us

Short answer: choose an EV charger manufacturer the way you would choose a long-term partner, not a one-off seller. Check that it is a real factory with test equipment; that the exact model you buy is certified for your market; that its power electronics, operating limits and OCPP implementation suit your sites; that MOQ, lead time, payment terms and warranty are written down; and that spare parts, firmware updates and training are available for years. The 15 checks below turn that into a process you can run with any supplier, including us.

The 15 checks

#	Area	Check	How to verify
1	Company	Is it a manufacturer, not a trading company?	Business licence scope; live video of assembly and test lines
2	Company	How long has it built chargers, and for which markets?	Export history, references in your region you can call
3	Company	Does it have its own R&D?	Ask who designs the control board, firmware and app
4	Company	What does quality control look like?	Incoming inspection, ageing (burn-in) test, final test records per serial number
5	Product	Is the exact model certified for your market?	Model number on CE / UKCA / UL / ETL certificates and test reports
6	Product	Who makes the power modules (DC) and key parts?	Module brand, contactors, RCD / RDC-DD, connectors, and their warranty
7	Product	What are the real operating limits?	Temperature at full output, IP / IK rating, altitude, derating curve
8	Product	Does OCPP work with your back end?	Test log with your CPMS; OCPP 1.6J or 2.0.1 feature list
9	Product	Is metering good enough for billing?	Meter accuracy class; MID or Eichrecht where required
10	Commercial	What are MOQ and lead time — standard vs custom?	Written in the quotation, by model
11	Commercial	What are the payment terms?	Deposit, balance before or after inspection, letter of credit
12	Commercial	What does the warranty cover?	Length, what is excluded, who pays shipping for replacements
13	Support	Are spare parts available, and at what price?	First-year spare-parts list with prices and stock
14	Support	How are firmware updates handled?	Over-the-air updates, release notes, who owns the firmware
15	Support	Will the factory train your technicians?	Training plan, manuals, remote support hours in your time zone

A process that narrows 20 suppliers to one

A typical selection funnel: ask many suppliers for information, test samples from a few, audit two, and start with a trial order before scaling.

Request for information. Send the same short questionnaire to every supplier: models and power range, certificates by model, OCPP version, metering, operating temperature, MOQ, lead time, warranty, spare parts. Ask for the documents, not just answers.
Desk review. Score each supplier on the 15 checks. Discard anyone who cannot show certificates for the model they quoted.
Samples. Test two or three samples in your own conditions — see our guide to sample testing.
Factory audit. On site or by live video: production line, test stations, ageing room, warehouse, incoming inspection. Our verification guide lists what to ask for.
Trial order. One pilot site or one container. Agree acceptance criteria and response times before the larger order.

A weighted score sheet

A score sheet stops the lowest price from winning automatically. Adjust the weights to your business — a distributor will weight OEM flexibility higher, a charge point operator uptime and back-end integration.

Area	Weight (example)	What earns full marks
Certification and compliance	25 %	Certificates and test reports name the exact model; meets local billing rules
Product performance	20 %	Full output at your site temperature; efficiency; metering class; connector options
Software and integration	15 %	OCPP test with your CPMS passed; OTA updates; clear firmware ownership
Quality and reliability	15 %	Ageing tests, traceable serial numbers, field data you can verify
Commercial terms	15 %	Clear MOQ, lead time, payment terms tied to inspection, written warranty
Support	10 %	Spare parts stocked and priced, training, response time in your time zone

Red flags

Certificates in a different company name, or for a different model, than the one quoted.
“OCPP compatible” with no version, no feature list and no test with any back end.
A temperature range on the datasheet with no statement about output at the top of the range.
No answer about who makes the power modules or what their warranty is.
Prices far below the market with no explanation of what was left out (cable length, RFID, metering, protection devices, packaging).
Pressure to pay 100 % up front before inspection.
No spare-parts price list, or spare parts “available on request” without stock.

What to ask us

We answer these 15 checks for every quotation: the certificate and test report for the exact model, power-module details for DC chargers, OCPP 1.6J / 2.0.1 feature lists, operating limits, MOQ and lead time for standard and custom versions, warranty terms (two years as standard), and spare-parts information for the models you choose. Send your questionnaire through the contact form and an engineer will reply.

Questions buyers ask

How do I know if a Chinese EV charger supplier is a real factory?: Ask for the business licence and check that its scope includes manufacturing; ask for a live video walk-through of the assembly line, test area and warehouse; and check that the company name on certificates and test reports matches the company you will pay. Traders often show product photos but cannot show production or ageing tests on request.
What certificates should an EV charger manufacturer have?: It depends on the market: CE (with LVD and EMC test reports) and often UKCA or TÜV marks for IEC markets; UL or ETL listing and ENERGY STAR for North America; plus ISO 9001 for the factory. Certificates must name the exact model you buy.
What is a reasonable MOQ for EV chargers?: MOQ varies by product and customisation. Standard models with a logo change usually have low minimums; new housings, new electronics or new certifications need larger orders to cover tooling and testing. Ask the manufacturer to separate the MOQ for a standard model from the MOQ for a custom one.
How long should an EV charger warranty be?: Two years is a common standard warranty for chargers; some suppliers offer extensions for power modules or for whole units on service contracts. Read what is excluded — installation faults, surge damage and wear parts such as cables and connectors are typical exclusions.
Should I choose the cheapest EV charger quotation?: Not without comparing line by line. Quotations differ in cable length, metering class, RFID, connectivity modules, protection devices, packaging, spare parts and warranty. Compare the five-year cost, including failures and downtime, not the unit price alone.