Many manufacturers hear “WERCS” for the first time and think it’s just another certification like UL or CE.It is NOT.

For battery companies targeting Walmart, Costco, The Home Depot, or Amazon US,WERCSmart is a mandatory “data passport” you cannot skip.

This guide explains everything clearly:What WERCS really is · How to register · How much it costs · The top pitfalls to avoid.

1. WERCS is NOT a certification — it’s a retail compliance database

WERCS (Worldwide Environmental Regulatory Compliance System)is a product safety and environmental data platform owned by UL (USA).

It does NOT issue test certificates.It is an online review system for retailers.

How it works:

1. You upload product data: chemical composition, SDS, transport classification, etc.
2. The system automatically assesses risks in storage, shipping, sales, and disposal.
3. If approved, you get a WERCS registration number.
4. This number is synced to retailers like Walmart to prove your product is safe and compliant.

Over 125 major retailers REQUIRE WERCS:

• Walmart (mandatory)
• Costco
• The Home Depot
• Amazon US
• Sears, Tesco, and more

In short: No WERCS = No entry to their warehouses or shelves.

2. How to complete WERCS registration? 4 simple steps

No sample testing is needed — 100% online.But details are critical; one mistake leads to rejection.

Step 1: Prepare core documents (most important)

• UN38.3 test report + TSD (Test Summary Document)Mandatory for lithium batteries. Must match the exact battery pack being registered.
• English SDS (Safety Data Sheet)Compliant with GHS, showing full hazard classification and disposal instructions.
• Chemical composition listWith CAS numbers and exact percentages (must total 100%).
• Product photos, packaging photos, UPC code (if retail mode).

Important:If the battery is sold separately on shelves (e.g., 18650 retail packs),you need bilingual SDS: English + French for Canada.

Step 2: Create account & submit

Register on WERCSmart, select your target retailers, fill in information, and upload files.

Step 3: System review

Typically 48 hours to 7 working days.Incomplete or wrong information will be returned.

Step 4: Get WERCS ID

Once approved, the ID is synced to retailers. You can now ship.

3. 3 “deal-breaker” mistakes for lithium batteries

Deadly mistake 1: Wrong order — “Cell first, finished product later”

For power banks, earbuds, or any device with built-in battery:

1. First register the cell / battery pack
2. Then register the finished productReverse order = instant rejection.

Deadly mistake 2: UN38.3 + TSD is mandatory

Since 2019, Walmart and others require:

• Valid UN38.3 report matching your battery
• TSD (Test Summary Document) (required since 2020)Missing either = blocked.

Deadly mistake 3: Retail vs Non-retail needs different files

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4. How much does WERCS registration cost?

Cost has 3 parts:

1. WERCS annual platform feeTiered subscription (up to 3, up to 25, up to 100 products).Fixed fee per tier, not per product.

2. UN38.3 test feeAround ¥3,000 for batteries <100Wh (if you don’t already have a report).

3. Agency service feeAround ¥1,000 for SDS editing, document review, full submission.

Money-saving tip:Within the subscription year, you can replace old products with new ones for free.

5. Why choose Guangdong ESTL for WERCS?

WERCS itself is simple, but details kill approvals.We help you avoid all the traps.

Our core strengths

1. Authorified qualificationsCNAS (L13753), CMA (202019014977), IECEE CBTL, UL TPTDP.Our UN38.3 & SDS are fully accepted by WERCS.

2. 10+ years focused on battery complianceKnow Walmart, Costco, Amazon’s ever-changing rules.Predict and fix errors before submission.

3. One-stop service

   • Compile chemical list
   • Make GHS-compliant EN/FR SDS
   • Choose the most cost-effective subscription tier
   • Support RMB payment
   • Account management & renewal reminders

4. Strict compliance & risk controlEnsure 100% accurate data to avoid fines or blacklists.

6. FAQ

Q: How long does WERCS registration take?A: 7–10 working days if UN38.3 and SDS are ready.

Q: How long is it valid?A: 1 year from the subscription payment date, not from product registration.

Q: Must every model be registered separately?A: No — you can register multiple products under your tier limit for one fee.

Q: How to verify our qualifications?A: Check CNAS & CMA official websites with our full name:Guangdong ESTL Technology Co., Ltd.

Conclusion

WERCSmart is the final gate for lithium batteries into North American retail.It’s not about product testing — it’s about compliance management.

For any battery company targeting the US market,WERCS is not optional — it’s mandatory.

If you need to supply Walmart, Costco, or fix Amazon listing issues,send us your product specification for a free professional evaluation.