Most importers pick a cordless tool supplier on price and sample quality, then discover the real problems eighteen months later — a platform that cannot be extended, a motor that cannot be replaced without retooling, and a supplier who turns out to be an assembler with a trading licence. This guide covers the checks that predict those problems before you pay a deposit.
KEY POINTS
- Ask who owns the motor. A supplier that buys complete brushless motors cannot fix a torque complaint without retooling.
- A shared battery platform is worth more than a lower unit price — it lets you extend the range without new tooling.
- Get MOQ, lead time, certification scope and payment terms in writing before the deposit, not after.
- Verify the factory address independently. An assembly workshop and a trading office look identical on Alibaba.
Start with the motor, not the price
The single cheapest question to ask a prospective cordless tool supplier is who winds the motor. A factory that winds its own brushless motors can change a winding, a magnet grade or a controller to fix a torque or overheating complaint. A factory that buys complete motors from a third party can only change the supplier — which usually means new tooling, a new minimum order, and a six-month delay.
This matters more for brushless tools than for brushed ones. In a brushed tool the motor is a commodity part that any assembler can swap. In a brushless tool the motor, the controller and the battery management system have to be matched, and the party that controls all three controls the quality ceiling of the product.
So the practical test is not "do you make brushless tools" — every supplier will say yes. It is "which operations happen inside your building". Motor winding, injection moulding of the housings, SMT of the controller board and final pack assembly are the four to ask about specifically.
Insist on a shared battery platform
A shared battery platform means several tools in the range run on the same pack and the same charger. For a distributor this is the difference between selling one tool and selling a system: a customer who buys a drill and a battery is far more likely to come back for an impact wrench, a saw or a blower if those tools take the same pack.
Ask which voltages the platform covers and how many models already run on it. A supplier with a genuine platform will answer with a number and a list. A supplier selling one-off designs will answer with a price.
For a new private-label brand, the platform question also decides your long-term tooling cost. Launching on an existing platform means your second and third products reuse the packs, chargers and much of the electronics, so each additional SKU costs materially less than the first.
Factory scale: verification beats brochures
Every Chinese supplier will send a capability deck with a factory photo on the cover. Very few importers verify that the address on the quotation is the address in the photo. That gap is where most sourcing losses happen.
Three checks close it. First, ask for the full company name and the plant address, then look the company up in China's national enterprise credit information system — the registration will show the legal entity, its registered capital and whether it is a manufacturing or a trading business. Second, ask for a live video walk-through rather than a recorded one, and ask the camera operator to show the motor winding area, the injection machines and the SMT line. Third, before the first deposit, send a small courier parcel to the factory address and confirm it is received.
None of these checks is expensive. Together they will separate a manufacturer from an assembler in about a week.
Get the order terms in writing before you commit
The commercial terms decide whether a supplier is workable for your business, and they should be confirmed in writing with the quotation — not negotiated after the sample is approved. There are five to pin down: minimum order quantity, sample lead time, bulk lead time, the deposit percentage, and who arranges and pays for certification.
A reasonable structure to expect from a mid-sized Chinese cordless tool factory is an MOQ in the low hundreds of pieces per model, samples inside two weeks, bulk production in four to six weeks after deposit and artwork confirmation, and a 30% deposit with the balance against a copy of the bill of lading. Terms far below that usually mean the work is being subcontracted.
Ask specifically how a mixed-model first order is handled. A supplier that will combine several models into one container makes a test order much cheaper, because you are paying for one shipment rather than five.
Match certification to the market you actually sell in
Certification is the most common cause of a first shipment being held at the port, and it is also the most common thing importers leave to the last minute. The requirements follow the destination market, not the factory: the EU needs the CE marking package and, for many power tools, the EMC and RoHS documentation; Germany additionally expects GS for many retail channels; North America has its own listing requirements, which are not met by CE.
Ask the supplier two questions. Which certifications can you supply, and on whose name is the certificate issued? A certificate in the factory's name is not automatically usable by your brand, and re-issuing it in your name is a separate step with its own cost and lead time.
The battery is a separate matter again. Lithium packs shipped by air or sea are subject to dangerous-goods rules, and the transport documents are not covered by the tool's CE file. Confirm early who prepares them.
The red flags worth walking away from
A supplier who cannot state an MOQ, a lead time and a deposit percentage without checking with someone else is not the manufacturer.
A supplier who quotes a price more than about 20% below everyone else on an identical specification is either leaving something out of the bill of materials or planning to substitute cells or magnets after the sample.
A supplier who will not let you or a third-party inspector visit, and offers only recorded video, is worth treating as an assembler until proven otherwise.
A supplier whose quotation does not mention certification at all, or who describes CE as "no problem, we can put the logo on", is a liability for anyone selling into the EU.
Where KESU fits
KESU is a brushless cordless power tool factory in Qidong City, Jiangsu Province, China — inside the Jiangsu electric-tool manufacturing belt, within reach of the Ningbo and Shanghai container ports. Nantong Kesu Electromechanical Tools Co., Ltd. operates a 12,000 m² plant with six assembly lines and 190 staff, and monthly output is around 250,000 units. Motor winding, injection moulding, SMT and pack assembly run under the same roof.
The range covers 100 models across eleven product lines on shared 12 V, 18 V and 21 V battery platforms, including drills and impact drills, impact wrenches, saws, chainsaws, blowers, grinders and rotary hammers. KESU works as both an OEM and an ODM supplier, so buyers can order KESU-branded tools or private-label models built to their own specification.
The minimum order quantity is 200 pieces per model, and mixed-model orders can be combined into one container, so a first order can cover several product lines at once. Samples take 7–10 days and bulk production runs 25–35 days after deposit and artwork confirmation. Standard terms are a 30% T/T deposit with the balance against copy of B/L, and KESU tools can be supplied with CE, GS, EMC and RoHS certification matched to the destination market.
KESU has been exporting cordless power tools for five years and currently manufactures for ten OEM and private-label customers alongside its own KESU® brand. Because that number is still small, there is no account-management layer between the buyer and the factory — the person who answers your first enquiry is the person who follows the order through production.
Next step
Send your model list, target market and expected first-order quantity, and KESU will reply with a factory quotation that states the MOQ, lead time, deposit and the certification scope for your destination. Importers are welcome to visit the plant in Qidong in person, or to take a live video tour of production and quality control before placing the first order.