What is the delivery time?

For the YOUWE brand, we have stock. This means we can ship within one week. For OEM usually 45 days. If we can confirm packing faster delivery time can be shorter.

4.0ah Lithium 18V Replacement Lithium Ion Battery for Power Tools

Name: 4.0ah Lithium 18V Replacement Lithium Ion Battery for Power Tools
Brand: Zhejiang Youwe Electrical Appliances Co., Ltd.
SKU: 1983024215

Zhejiang, ChinaZhejiang Youwe Electrical Appliances Co., Ltd.

US$10.00-34.00

500 Pieces

Sample price:US$100.00/piece.Request sample

Product profile

Customization

Available

Type

Li-ion Battery

Cathode Material

NCM

Model NO.

YW0021-01

Rechargeable

Yes

Size

Medium

Battery Voltage

21V

Electrolyte

Li-ion

Charging Time

4 Hours

Cycle Life

600 Times

Usage

for Power Tool

Transport Package

Brown Box + Sea Packing

Specification

21V 4.0Ah

Trademark

YOUWE

Origin

China

HS Code

850760009

Production Capacity

8000PC/M

Key features

High Capacity Battery: 4.0Ah (4000mAh) Li-ion battery pack for extended power tool usage.

Fast Charging Time: Fully recharges in approximately 4 hours for quick turnaround.

Long Cycle Life: Endures up to 600 charge cycles for reliable long-term performance.

Comprehensive Certifications: Certified by CE, CB, UN38.3, RoHS, MSDS, SDS, KC, and BIS standards.

Robust Safety Design: Features plastic housing and integrated PCM for enhanced safety.

Flexible Customization: Supports OEM/ODM with full, minor, and sample-based customization options.

Lightweight Construction: Compact design weighing only 320g for easy handling.

Sample Testing Available: One or two samples provided for testing with full refund upon order.

Company profile

Patents AwardedHigh Repeat Buyers Choice100% Finished Products InspectionQA/QC Inspectors

Zhejiang Youwe Electrical Appliances Co., Ltd.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 6 years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤1.90h

AI-Powered supplier vetting

SummaryThe supplier is a combined manufacturing and trading company focused on household appliances, wind and electric tools, metal tools, and automotive parts. It reports exports to more than 80 countries and regions, with exports representing 90% of total sales and six years of export experience. The supplier offers extensive customization and 3D software design services, supported by three years of total R&D engineer experience. Its production information indicates one production line and stated cordless drill output of 300,000 units, while quality control includes 6–10 staff and a quality assurance capability. However, no supplier management-system certification is reported, finished-product inspections lack written records, and several service-management processes—including complaint handling and corrective actions—lack written procedures or records. No evidence is provided regarding financial credibility or specific customer cases.

Supplier typeThe supplier is identified as a combined company and its business scope includes manufacturing and sales of household appliances, wind and electric tools, metal tools, and automotive parts. This supports classification as a combined manufacturing and trading supplier rather than a purely trading entity.

CertificationsThe supplier management-system certification field is explicitly reported as NIL. No certification is evidenced in the provided information, but the absence of listed certification alone does not establish a broader deficiency beyond this field.

After-Sales capabilityThe supplier reports in-stock service capacity and accepts multiple service quotation and payment terms, with a stated one-month lead time in both peak and off-season periods. However, it has no overseas warehouse or showroom, and it lacks written procedures or records for service assessment, corrective/preventive actions, and effective customer-complaint handling, indicating weakly documented after-sales management.

Production capacityThe supplier reports strong production technology, advanced production equipment, one operating production line, 6–10 quality-control staff, and stated cordless drill output of 300,000 units. It also has in-stock capacity, but no valid contract exists with its factory or related subcontractors, creating a documented manufacturing-capacity governance weakness.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also provides 3D software design services, directly supporting a broad customization capability.

Product Q&A

Q:Where is your factory located?

Our factory is located in Jinhua, Zhejiang, which is a hardware center well know city all over the world.

Q:What are your main export markets?

At present. We have exported to many areas, including North America, the EU, the Middle East, South America, Russia, Iran, Vietnam, India, Malaysia, and Africa.

Q:What is your Minimum Order Quantity (MOQ)?

For the YOUWE brand, we do small bulk wholesale. That means even one carton is acceptable. For OEM, MOQ is 500pcs, depending on your required model and packing.

Q:Can I get a sample for testing?

Yes, we can offer one or two samples for the clients to test with charging. When clients place an order, we will pay the sample money back.

Q:What is the warranty term for the product?

The battery is 12 month's warranty. the core of the motor is? 18 months warranty. For other problems, we can send you free spare parts.