CE-Certified 4V Cordless Tools: Specs, Standards & MOQ

Most 4V cordless tool enquiries begin with a voltage and end with a customs problem. A buyer sees a 4V cordless staple gun, a 4V cordless screwdriver and a 4V hot glue pen on the same catalogue spread, assumes that one set of paperwork covers the range, and only discovers at import clearance that compliance is granted per model, per standard and per market. The “4V” label groups products for merchandising. It does not clear them for sale.

This guide is written for importers, private-label brand owners, retail buyers and procurement teams who have already decided that a 4V-class cordless programme is worth pursuing and now need to evaluate suppliers on evidence rather than on catalogue language. It explains what a CE-certified 4V cordless tools claim actually has to contain at document level, how to read a certificate scope against a model number, which electrical parameters decide whether a tool performs or generates returns, and what HOTAK PRO TOOLS can currently document across its 4V cordless range.

Why 4V Cordless Tool Sourcing Goes Wrong Before It Goes Right

Failures in this category are rarely caused by a bad tool. They are caused by a mismatch between what the buyer believed was covered and what the supplier can actually evidence. Four specific gaps account for most of the friction.

1. “4V” is a merchandising label, not a specification

In the tool trade, a product is normally described as “4V” when it runs on a single lithium-ion cell platform. On the technical documents that matter to customs and to technical file reviewers, the same tools are usually listed at a rated voltage of 3.7 V. Across the HOTAK PRO TOOLS cordless range, for example, the YJSG-501 and YJSG-500 nail guns, the YJPS-902 and YJPS-912 power screwdrivers, the YJPS-906 and YJPS-907 precision screwdrivers, the YJGG-001 hot glue pen and the YJTS-3526 household electrical screwdriver set are all documented at a rated voltage of 3.7 V.

The practical consequence is straightforward: do not negotiate a 4V cordless tools order on the strength of the “4V” wording alone. Ask for the rated voltage, the battery capacity in mAh, the output speed in rpm and the torque figures, then decide whether the tool matches the job.

2. A certificate covers a model, not a product family

CE marking is a manufacturer’s declaration supported by a technical file and, where a directive requires it, by a notified-body certificate. Those documents name a scope. That scope is typically one product type and one model designation — not the entire catalogue.

For the cordless range, the documented example is the 5-in-1 cordless power staple gun model YJSG-501. Its CE Certificate of Conformity under the Machinery Directive 2006/42/EC carries certificate number AM 50559365 0001, issued by TÜV Rheinland LGA Products GmbH, and cites the standards EN ISO 12100:2010 and EN ISO 11148-13:2018. The certificate applies to the EU market. Any buyer who extends that approval to a different model without checking has made an assumption, not a verification.

3. Electrical parameters, not voltage, decide the return rate

Two tools can both be “4V cordless screwdrivers” and still serve completely different jobs. The YJPS-906 electric precision repair tool set produces 0.15 N·m of electric torque and 3 N·m of manual torque at 0–220 rpm, with a 320 mAh battery. The YJPS-902 power screwdriver produces 2 / 3.5 / 5 N·m of electric torque and 10 N·m of manual torque at 0–280 rpm, with a 2000 mAh battery.

Put the YJPS-906 into a furniture-assembly kit and it will stall on long screws. Put the YJPS-902 into an electronics repair kit and it will strip the fasteners. The voltage class was never the deciding variable — torque, speed and battery capacity were.

4. Customisation needs to be defined before tooling, not after

Private-label buyers usually want colour and logo changes, and both are routinely available. What causes delay is leaving the commercial terms loose until after artwork is approved. If colour, logo placement, packaging, insert layout and documentation language are not fixed in the same conversation as the technical specification, the sample round becomes the negotiation round, and the schedule slips.

How the 4V Cordless Category Sits in the Tool Market

4V-class cordless tools occupy a distinct shelf position from 12 V and 18 V platforms. They are not a substitute for a high-torque drill or an impact driver. They are the tools that get used when the job is small, the access is tight, or the alternative is doing it by hand.

Three characteristics define the category in the eyes of retail buyers. First, portability: a single-cell tool is light enough to be held for long, repetitive work such as furniture assembly or upholstery fastening. Second, low barrier to entry: the tool price point and the charging setup — increasingly a 5 V USB-style input rather than a dedicated dock — make the category practical for entry-level DIY buyers. Third, kit economics: a 4V tool is often sold inside a set rather than alone, which is why the accessory count and the case quality matter as much as the tool itself.

On the compliance side, the category is not treated as a low-risk afterthought by European market surveillance. Cordless tools with a powered fastening or driving mechanism fall inside the machinery safety framework, which is why certification language — not marketing language — is the correct basis for supplier comparison. Buyers who treat 4V as “too small to be regulated” tend to be the ones discovering the problem at the port.

How HOTAK PRO TOOLS Structures 4V Cordless Supply and Compliance

HOTAK PRO TOOLS is the tool brand supplied by Ningbo (Yinzhou) Yongjia Electrical Tools Co., Ltd., a manufacturer founded in 2000 and based in Ningbo, Zhejiang Province, China. The company operates a production base of more than 45,000 m², runs a technical and R&D group of 25 engineers, and produces 18,000,000 units annually. Approximately 95% of output is exported, with the main markets being the EU, the USA, Southeast Asia and South America. Its range covers hex keys, staple guns, precision screwdrivers, hobby knives, hand tool sets, cordless staple guns, 4V cordless screwdrivers and mini rotary tools.

The 4V cordless range and its documented electrical data

The cordless portfolio is built around a single 3.7 V lithium platform, which gives buyers a consistent charging and battery story across a mixed programme. The documented specifications are as follows.

• YJSG-501 — five-use lithium electric nail gun. Rated voltage 3.7 V, battery capacity 2000 mAh, rated power 25 W. Intended for household and manufacturing applications.
• YJSG-500 — two-use lithium electric nail gun. Rated voltage 3.7 V, battery capacity 2000 mAh, rated power 25 W. Intended for household and manufacturing applications.
• YJPS-902 — power screwdriver. Rated voltage 3.7 V, battery capacity 2000 mAh, no-load operating time ≥60 min, electric torque 2 / 3.5 / 5 N·m, manual torque 10 N·m, output speed 0–280 rpm, charge output voltage 5 V.
• YJPS-912 — power screwdriver set. Rated voltage 3.7 V, battery capacity 800 mAh, no-load operating time ≥50 min, electric torque 2.5 N, manual torque 10 N·m, output speed 0–250 rpm, charge current 500 mA.
• YJPS-906 — electric precision repair tool set. Rated voltage 3.7 V, battery capacity 320 mAh, no-load operating time ≥30 min, electric torque 0.15 N·m, manual torque 3 N·m, output speed 0–220 rpm.
• YJPS-907 — 26-piece cordless precision power screwdriver set. Rated voltage 3.7 V, battery capacity 320 mAh, output speed 220 rpm, charging time 1 hour, power torque 0.15 N·m, hand torque 3 N·m.
• YJTS-3526 — 41-piece household electrical screwdriver tool set. Rated voltage 3.7 V, battery capacity 320 mAh, output speed 220 rpm, charging time 1 hour, power torque 0.15 N·m, hand torque 3 N·m. Supplied with LED lighting and a mixed bit selection for multiple working scenarios.
• YJGG-001 — cordless hot glue pen. Rated voltage 3.7 V, battery capacity 320 mAh, rated power 4.2 W, operating time ≥120 min, glue flow speed 60 seconds, operating temperature 150 °C, charge output voltage 5 V, full charge time 120 min ±10 min.

Certification coverage: what is documented today

Certification is where a supplier either answers a question or deflects it. The following documents are on file and attributable to specific models.

• CE — cordless power staple gun, model YJSG-501. Certificate of Conformity under Machinery Directive 2006/42/EC; certificate number AM 50559365 0001; issued by TÜV Rheinland LGA Products GmbH; scope defined as the 5 IN 1 CORDLESS POWER STAPLE GUN, model YJSG-501; standards cited: Directive 2006/42/EC, EN ISO 12100:2010 and EN ISO 11148-13:2018; EU market; issue date 2022-09-10; valid to 2030-12-31.
• CE — hand-operated staple guns, models YJSG-105 and YJSG-023. Certificate of Conformity under Machinery Directive 2006/42/EC; certificate number AM 50694538 0001; issued by TÜV Rheinland LGA Products GmbH; scope defined as Staple Gun (Tacker / hand-operated tacker); standards cited: Directive 2006/42/EC, EN ISO 12100:2010 and EN ISO 11148-13:2018; EU market; issue date 2026-03-02; valid to 2030-12-31.
• GS — hexagon screw keys with ball end. GS Product Safety Certificate; certificate number S 50694620 0001; issued by TÜV Rheinland LGA Products GmbH; standards cited: DIN ISO 2936-10.16 and AfPS GS 2019:01 PAK; market DE / EU; issue date 2026-03-18; valid to 2031-03-17.

Quality management and factory approvals

Behind the product certificates sits the factory system. Ningbo (Yinzhou) Yongjia Electrical Tools Co., Ltd. holds ISO 9001 certification for its quality management system, holds BSCI business social compliance certification, has TÜV/GS approval, has been audited and approved by Walmart (USA), has been audited and approved by Kingfisher (UK), and holds VPA (Verify Production Audit) approval. The company was accredited as a National High-Tech Enterprise in 2014 and recognised as a “Little Giant” enterprise in Ningbo. Its patent portfolio includes 7 invention patents, more than 20 European patents, 50 utility model patents and over 100 design patents.

Manufacturing is integrated in-house, covering mould development, forging and stamping, heat treatment, surface finishing, precision machining, assembly and packaging. Quality control runs through three checkpoints — incoming inspection, in-process inspection and final inspection — rather than a single end-of-line check. For a buyer, the relevant point is not the list itself but the fact that each item can be verified against a document rather than a brochure.

OEM, ODM and private-label terms

The company operates in OEM and ODM mode with colour and logo customisation. Monthly capacity is 1,500,000 units, standard lead time is 30–45 days, and the minimum order quantity is 600 units. After-sales support is provided remotely. For private-label programmes, the practical decision is whether the customisation stays at the appearance level — housing colour, printed logo, packaging, insert and manual language — or reaches the electrical assembly. The former is a routine configuration; the latter changes the technical file and should be discussed as an engineering project rather than a print change.

Step-by-Step: How to Verify a 4V Cordless Tool Supplier

The following sequence works for a first order and for a repeat order. Each step produces a document or a decision, so the process can be audited rather than remembered.

Step 1 — Fix the target market and the regulatory route

Decide the destination markets first. An EU-bound cordless power staple gun, for example, is handled under the machinery safety framework, which is why the YJSG-501 certificate cites Machinery Directive 2006/42/EC with EN ISO 12100:2010 and EN ISO 11148-13:2018. A product sold only in a market without that requirement has a different document set. Choosing the market first prevents you from ordering the wrong configuration.

Step 2 — Match the certificate scope to the exact model number

Take your intended model number and read it against the scope field of the certificate. Not the title. Not the product family. The scope. If the scope says model YJSG-501 and your order says YJSG-500, you have two different products and, unless a separate document exists, one of them is unverified.

Step 3 — Cross-check electrical parameters against the use case

Build a small parameter table before you request quotations. For every intended SKU, record rated voltage, battery capacity, output speed, electric torque and manual torque. Then test the list against the job. A precision repair kit needs roughly the YJPS-906 or YJPS-907 profile; a general assembly screwdriver needs the YJPS-902 or YJPS-912 profile; a fastening tool needs the YJSG-501 or YJSG-500 profile.

Step 4 — Confirm the charging interface and the battery documentation

Confirm the charge output voltage and the charging time for each model. In this range the charge output voltage is documented at 5 V for the YJPS-902, YJGG-001 and comparable units, with charging times of 1 hour for the YJPS-907 and YJTS-3526 and 120 min ±10 min for the YJGG-001. Charging behaviour is one of the most common sources of consumer complaints, and it is fully checkable before you place an order.

Step 5 — Agree MOQ, customisation and packaging before tooling

Fix the commercial frame in writing: minimum order quantity, colour and logo scope, packaging format, insert layout, manual and label languages, carton configuration. The published terms for this supplier are MOQ 600 units, lead time 30–45 days and monthly capacity of 1,500,000 units. Confirm them against your own launch calendar rather than assuming they are universal.

Step 6 — Validate with a sample and a pre-shipment inspection

Order a sample of the exact model and configuration you intend to buy, not a sister model. When the sample is approved, freeze the specification in writing and use it as the reference for pre-shipment inspection. This locks the third-party audit trail to the same document the factory used.

Five Buyer Scenarios Where 4V Cordless Tools Earn Their Place

The category pays for itself in situations where a larger tool is impractical and hand tools are too slow. The mapping below connects each scenario to the models that fit it.

Furniture assembly and flat-pack retail

Flat-pack assembly is repetitive, low-torque and speed-sensitive. A cordless power screwdriver in the YJPS-902 or YJPS-912 profile is the right fit, and the 10 N·m manual torque figure matters because the final tightening is usually done by hand. Bundling the tool with the right bit selection reduces assembly time more than increasing voltage would.

Electronics and small-device repair

Precision work needs low torque and controlled speed, not power. The YJPS-906 precision repair set at 0.15 N·m electric torque and 0–220 rpm, and the YJPS-907 26-piece precision screwdriver set at 220 rpm with a 1-hour charge, are specified for this application. Related non-powered sets such as the YJTS-3140 43-piece mobile phone repair tools set and the YJTS-3018 77-piece smartphone repair kit cover the accessory side of the same programme.

Upholstery, decoration and light fastening

Fabric, edging, beading and light trim are fastened with low-energy, high-repeat actions. The 5-in-1 cordless power staple gun YJSG-501 and the two-use model YJSG-500 both run on a 2000 mAh battery at 25 W, which is the profile that suits decorative fastening better than an 18 V construction stapler would. Buyers who need a hand-operated alternative can use the CE-certified YJSG-105 medium-duty staple gun or the YJSG-023 heavy-duty three-way set.

Craft, hobby and bonding projects

Bonding work is a separate tool rather than a variant of one. The YJGG-001 cordless hot glue pen runs at 3.7 V with a 320 mAh battery, 4.2 W of power and an operating time of at least 120 minutes, with a glue flow speed of 60 seconds and an operating temperature of 150 °C. For a craft-focused range, this is the SKU that extends the basket beyond fastening and driving.

Household repair and DIY retail kits

Retailers building an entry-level cordless set often combine one powered tool with a broad accessory count. The YJTS-3526 41-piece household electrical screwdriver tool set pairs a 3.7 V powered handle with a mixed bit selection and LED lighting. The YJTS-3401 50-piece ratcheting screwdriver set is packaged in a durable box and is available for private label, which makes it a natural companion SKU for a branded kit programme.

4V Cordless Tool Range Comparison

The table below compares the documented cordless models on the parameters that actually drive a purchase decision: rated voltage, battery capacity, performance data and intended application. All values are taken from the manufacturer’s published specifications.

Model	Tool Type	Rated Voltage	Battery Capacity	Documented Performance Data	Typical Application
YJSG-501	Five-use lithium electric nail gun	3.7 V	2000 mAh	25 W rated power; CE certified under Machinery Directive 2006/42/EC (AM 50559365 0001)	Household and manufacturing fastening
YJSG-500	Two-use lithium electric nail gun	3.7 V	2000 mAh	25 W rated power	Household and manufacturing fastening
YJPS-902	Power screwdriver	3.7 V	2000 mAh	Electric torque 2 / 3.5 / 5 N·m; manual torque 10 N·m; 0–280 rpm; ≥60 min no-load operation	Assembly and general driving
YJPS-912	Power screwdriver set	3.7 V	800 mAh	Electric torque 2.5 N; manual torque 10 N·m; 0–250 rpm; ≥50 min no-load operation	Light assembly and kit programmes
YJPS-906	Electric precision repair tool set	3.7 V	320 mAh	Electric torque 0.15 N·m; manual torque 3 N·m; 0–220 rpm; ≥30 min no-load operation	Electronics and precision repair
YJPS-907	26-piece cordless precision power screwdriver set	3.7 V	320 mAh	220 rpm; 1-hour charge; power torque 0.15 N·m; hand torque 3 N·m	Precision repair kits
YJTS-3526	41-piece household electrical screwdriver tool set	3.7 V	320 mAh	220 rpm; 1-hour charge; power torque 0.15 N·m; hand torque 3 N·m; LED lighting	Retail household DIY kits
YJGG-001	Cordless hot glue pen	3.7 V	320 mAh	4.2 W; ≥120 min operating time; glue flow 60 sec; 150 °C; charge output 5 V	Craft, hobby and bonding

Frequently Asked Questions

Which 4V cordless tools carry CE certification?

On the documented evidence, the CE-certified cordless model is the 5-in-1 cordless power staple gun YJSG-501, covered by Certificate of Conformity number AM 50559365 0001 issued by TÜV Rheinland LGA Products GmbH under Machinery Directive 2006/42/EC, citing EN ISO 12100:2010 and EN ISO 11148-13:2018, with an issue date of 2022-09-10 and validity to 2030-12-31 for the EU market. The cordless range also includes models such as YJSG-500, YJPS-902, YJPS-912, YJPS-906, YJPS-907, YJTS-3526 and YJGG-001. Buyers should request the certificate or declaration for each specific model number in their order rather than relying on a category-level statement.

What standards and certificate numbers support the CE claim for the cordless staple gun?

The YJSG-501 certificate cites Directive 2006/42/EC (Machinery Directive), EN ISO 12100:2010 and EN ISO 11148-13:2018. The certificate number is AM 50559365 0001 and the issuing body is TÜV Rheinland LGA Products GmbH. The certificate scope explicitly names the 5 IN 1 CORDLESS POWER STAPLE GUN, model YJSG-501. Separately, the hand-operated staple guns YJSG-105 and YJSG-023 are covered by certificate number AM 50694538 0001, issued 2026-03-02 and valid to 2030-12-31, and the ball-end hexagon screw keys are covered by GS certificate number S 50694620 0001 under DIN ISO 2936-10.16 and AfPS GS 2019:01 PAK for the German market. Each scope names its own product, which is why the model number must be matched individually.

What rated voltages, battery capacities and torque values are available across the 4V cordless range?

Every cordless model in the range is documented at a rated voltage of 3.7 V — the single-cell lithium platform commonly merchandised as “4V”. Battery capacity differs by tool: 2000 mAh for the YJSG-501 and YJSG-500 nail guns and the YJPS-902 power screwdriver; 800 mAh for the YJPS-912 power screwdriver set; and 320 mAh for the YJPS-906, YJPS-907, YJTS-3526 and YJGG-001. Torque is where the models diverge most: the YJPS-902 delivers 2 / 3.5 / 5 N·m electric torque with 10 N·m manual torque, while the precision tools YJPS-906, YJPS-907 and YJTS-3526 deliver 0.15 N·m electric torque with 3 N·m manual torque. Selecting on voltage alone will not distinguish a furniture-assembly tool from an electronics-repair tool.

What is the minimum order quantity, and can 4V cordless tools be private labelled?

The published commercial terms are a minimum order quantity of 600 units, a lead time of 30–45 days and a monthly capacity of 1,500,000 units. OEM and ODM programmes are supported, with customisation available on colour and logo. For a private-label cordless programme, define the customisation boundary early: appearance-level changes such as housing colour, printed logo, packaging, insert layout and manual language are routine configuration points, while changes that reach the electrical assembly should be treated as an engineering project because they affect the underlying technical file. The YJTS-3401 50-piece ratcheting screwdriver set, for example, is packaged in a durable box and is explicitly available for private label, which makes it a workable companion SKU to a branded cordless kit.

What are the sample and production lead times for a 4V cordless tool order?

Standard production lead time is 30–45 days from confirmation, with a minimum order quantity of 600 units and monthly capacity of 1,500,000 units, so capacity is not usually the constraint on a first programme. The schedule risk sits earlier in the process: sample round, specification freeze and packaging approval. Order a sample of the exact model and configuration you intend to buy, freeze that specification in writing, and use it as the inspection reference. If you want to see the full cordless and hand tool range before shortlisting models, you can download the 2025 YONGJIA catalogue or send your target specification and destination market directly to the HOTAK PRO TOOLS team at yjtcl@yj-tools.com for a sample and quotation.

What to Do Next

Buying 4V cordless tools is not complicated once the decision variables are separated. Voltage is a merchandising label, not a selection criterion. Torque, speed and battery capacity determine whether the tool does the job. Certification determines whether it can be sold. And the certificate scope — not the catalogue heading — determines which models are actually covered.

The practical sequence for a first order is short: define the destination market, list the intended model numbers, request the certificate that names each model, build a parameter table from the published data, agree MOQ, customisation and packaging in writing, then validate with a sample of the exact configuration before production. Follow that order and the compliance conversation happens in the planning stage, where it costs nothing, instead of at the port, where it costs everything.