Are products certified?

Yes, they meet CE, UL, ISO, etc.

How is battery quality ensured?

Strict testing is done before every shipment.

Durable 5.03035mm High Energy Density Lithium-Ion Polymer Battery

Name: Durable 5.0*30*35mm High Energy Density Lithium-Ion Polymer Battery
Brand: Dongguan Youli Electronic Technology Limited
SKU: 1977539201

Guangdong, ChinaDongguan Youli Electronic Technology Limited

Durable 5.0*30*35mm High Energy Density Lithium-Ion Polymer Battery

US$0.62

100-499 Pieces

US$0.59

500-999 Pieces

US$0.56

1,000+ Pieces

Product specifications

3.7V

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Type

Lithium-Ion Polymer Battery

Rechargeable

Model NO.

503035

Size

Small

Products Name

Lithium-Ion Polymer Battery

Sample

Yes

Customized

Yes

Advantages

Ultra-Thin & Flexible Designs,High Energy Density

Application

Smartphones, Smartwatches, Bluetooth Earbuds

MOQ

100

Transport Package

Packed Into PE Bag & White Box, or Customized

Specification

5.0*30*35mm

Trademark

ULi

Origin

Guangdong, China

Key features

High Energy Density: Delivers stable discharge and lightweight performance for portable devices.

Ultra-Thin & Flexible: Easy to integrate into compact product structures with leak-proof safety.

3-5 Years Warranty: Comprehensive warranty coverage for our batteries ensuring long-term reliability.

24h Tech Support: Email or call our team for technical assistance with replies within 24 hours.

OEM/ODM Available: Customization options available for bulk orders to meet specific needs.

Certified Quality: Products meet CE, UL, ISO standards with strict testing before shipment.

Company profile

Fast Delivery100% Finished Products InspectionQuality AssuranceProduct Certification

Dongguan Youli Electronic Technology Limited

Guangdong, 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: 7 years CertifiedNearest Port: shenzhen portAverage Response Time: ≤1.57h

AI-Powered supplier vetting

SummaryThe supplier presents itself as a battery manufacturer with R&D, OEM/ODM, customization, and production capabilities. It reports two production lines, more than 70 automatic machines in an associated factory, and a stated capacity of at least 50,000 batteries per day. R&D information indicates new products were developed within the past year and multiple customization services are available. The supplier reports one-year product warranty coverage, debugging, maintenance, and training services, but its service procedures and records are incomplete. Certification capability includes UL, FCC, CE, and RoHS, while supplier-management-system certification is listed as NIL. Financial evidence is limited to year labels without financial figures, so credibility cannot be fully assessed. OEM service for known brands is reported, but no specific customer names or cases are provided.

Supplier typeThe supplier identifies itself as a battery supplier and reports R&D, OEM/ODM, and production capabilities. Its offerings indicate a manufacturer capable of customized battery development and supply rather than only a trading or distribution role.

CertificationsThe supplier reports sustainable-development and product certification capability covering UL, FCC, CE, and RoHS. However, certification of supplier management systems is explicitly listed as NIL, so the evidence supports product-related certification capability but not certified management systems.

After-Sales capabilityThe supplier states that all products have a one-year warranty and offers debugging, maintenance, and training. However, service assessment and complaint-handling procedures have no written records, and corrective-action records are also absent, indicating service offerings exist but documentation and control are incomplete.

R&D capabilityThe supplier reports an R&D department, two years of total R&D-engineer experience, new products within the past year, and ODM services. It also reports no available SDK, but this does not negate its stated product-development capability for battery customization and ODM work.

Production capacityThe supplier reports two production lines, more than 70 automatic machines in an associated factory, and a stated capacity of at least 50,000 batteries per day. It also has valid manufacturing contracts with associated subcontractors and in-stock capability, providing explicit evidence of production capacity.

Customization capabilityThe supplier explicitly provides customization from samples, designs, full customization, minor customization, and flexible customization. These services are consistently reported across both R&D and design-capability records, supporting broad customization capability.