Sunpower 21700 4000mAh 30A Solar Battery High Capacity for Power Tools

Name: Sunpower 21700 4000mAh 30A Solar Battery High Capacity for Power Tools
Brand: Guangzhou Dichen New Energy Co., Ltd.
SKU: 2303942865

Guangdong, ChinaGuangzhou Dichen New Energy Co., Ltd.

US$1.35

30-99 Pieces

US$1.20

100-999 Pieces

US$1.15

1,000+ Pieces

Product specifications

Nominal Voltage

Nominal Capacity

Color

Sample price:US$1.40/piece.Request sample

Product profile

Customization

Available

Type

Li-ion Battery

Cathode Material

NCM

Model NO.

SunpowerINR21700-4000

Rechargeable

Yes

Size

Small

Cycle Life

500 Times

Warranty

1 Year

Certification

UL/Reach/Bis/CB/PSE

OEM/ODM

Acceptable

Application

Robot Vacuum Cleaner

Operating

-20~+60

Cathode Materials

Licoo2

Weight

48g

Transport Package

30PCS/Carton

Specification

21*70mm

Trademark

Sunpwer

Origin

China

HS Code

8507600090

Production Capacity

50000PCS/Month

Key features

High Capacity 4000mAh: Nominal capacity of 4000mAh at 0.2C discharge rate for extended power tool usage.

Multiple Certifications: Certified with UL, Reach, Bis, CB, PSE, SGS, and UN38.3 for global safety compliance.

Flexible Customization: Accepts OEM/ODM, customization from designs and samples, and minor customizations.

Fast Response Support: Technical team provides responses within 24 hours for all inquiries.

Quality Assurance Process: Includes pre-production samples and final inspections before every shipment.

Diverse Payment Options: Accepts T/T, L/C, Credit Card, PayPal, Western Union, and Cash in multiple currencies.

Global Shipping Terms: Flexible delivery terms including FOB, CFR, CIF, EXW, FCA, DDP, and DDU.

Company profile

Experienced TeamFast DeliveryIn-stock CapacityProduct Certification

Guangzhou Dichen New Energy Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc.Export Year: 2009-06-10Nearest Port: GZAverage Response Time: ≤5.13hTerms of Payment: T/T

AI-Powered supplier vetting

SummaryTipsun is identified as a professional technical supplier focused on customized energy storage system solutions. It supports customization from designs and samples, minor customization, and flexible customization, but does not provide 3D software design, ODM, SDK, or popular-brand OEM services. Production evidence includes two production lines and multiple welding, coding, battery testing, aging, and electronic-load facilities. Quality assurance, raw-material traceability, warehouse procedures, and 12 quality-control test devices are documented, although only one quality-control staff member and one R&D engineer are reported. The supplier has inventory capability and a one-month average lead time in both peak and off-season, but lacks overseas warehouses, showrooms, agents, branches, and overseas service coverage. No supplier-management-system certification is reported, and the manufacturing arrangement lacks a valid contract with related subcontractors. Customer cases are not provided.

Supplier typeThe supplier is explicitly identified as a professional technical supplier and describes its business as providing customized energy storage system solutions and services. This indicates a technical, solution-oriented supplier profile rather than a general trading-only profile.

CertificationsSupplier management-system certification is reported as NIL. The slices therefore provide explicit evidence that no such certification is held or reported.

After-Sales capabilityThe supplier has procedures for corrective and preventive actions and customer complaints, but no written records are maintained for either process. It has inventory capability, while lacking overseas warehouses, showrooms, agents, branches, and overseas service coverage, limiting demonstrated international after-sales support.

R&D capabilityThe supplier has professional technical and R&D capability and one reported R&D engineer, whose role includes preparing samples to customer requirements. However, it reported no new products in the past year and does not provide ODM, SDK, or 3D software design services, indicating limited demonstrated innovation breadth.

Production capacityThe supplier operates two production lines and has equipment for spot and laser welding, coding, ultrasonic welding, aging, battery testing, charging and discharging, electronic-load testing, and internal-resistance measurement. It also reports inventory capability and a one-month average lead time in both peak and off-season, although the lack of a valid contract with related subcontractors is a production-governance weakness.

Customization capabilityThe supplier explicitly supports customization from designs and samples, minor customization, and flexible customization. Its R&D engineer provides samples according to customer requirements, directly supporting the stated customization capability.

Product Q&A

Q:Who are we?

We are based in Guangdong, China, start from 2017, sell to Eastern Europe (20.00%), North America (20.00%), Northern Europe (10.00%), Western Europe (10.00%), Southeast Asia (10.00%), Eastern Asia (10.00%), South America (8.00%), Mid East (5.00%), Africa (5.00%), Central America (2.00%). There are total about 51-100 people in our office.

Q:How can you guarantee quality?

Always a pre-production sample before mass production; Always final Inspection before shipment.

Q:What can you buy from us?

lifepo4 Battery, lifepo4 Battery Pack, 12V Battery Pack, 48V Battery Pack, Portable Power Station.

Q:Why should you buy from us not from other suppliers?

1. Battery Pack Experience Technology 2. Fast response within 24 hours. 3. Great After-Sale Service 4.Strong R & D team.

Q:What services can you provide?

Accepted Delivery Terms: FOB,CFR,CIF,EXW,FCA,DDP,DDU Accepted Payment Currency:USD,EUR,AUD,HKD,CNY; Accepted Payment Type: T/T,L/C,Credit Card,PayPal,Western Union,Cash; Language Spoken:English,Chinese.