Rechargeable 503030 3.7V 400mAh Lipo Battery for Wireless Bluetooth Earbuds

Name: Rechargeable 503030 3.7V 400mAh Lipo Battery for Wireless Bluetooth Earbuds
Brand: Dongguan APTPES Co., Ltd.
SKU: 2247168475

Guangdong, ChinaDongguan APTPES Co., Ltd.

US$0.70-0.90

5,000 Pieces

Product specifications

503030-3.7V 400mAh

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Type

Polymer Lithium Battery

Cathode Material

LCO

Model NO.

3.7V 400mAh-503030

Rechargeable

Yes

Size

Small

Model No.

3.7V 400mAh

Dimensions

50*30*30mm

Nominal Voltage

3.7V

Charge Voltage

4.2V

Connector

Jst/Molex/Other Available

Application

Electric Folklifts

Cycle Life

500 Times

Warranty

1 Years

Protection

Overcharge/Over-Discharge

Certification

CE UL

Transport Package

Battery Case

Specification

50*30*30mm

Trademark

APTPES

Origin

Guangdong China

HS Code

8507600090

Production Capacity

10000PCS/Day

Key features

Ultra-Thin & Lightweight Design: Merely 5.0mm in thickness, optimizing space for modern micro-wearables and compact smart electronics.

Exceptional Low Self-Discharge: Engineered with high-purity Cobalt material, ensuring extended standby time and reducing frequent charging cycles.

Premium Safety Standard: Equipped with a precision built-in Seiko IC Protection Circuit Module (PCM) against over-charge, over-discharge, and short circuits.

Company profile

Product CertificationStandardized quality controlOEM ServicesR&D Capabilities

Dongguan APTPES Co., Ltd.

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.Average Response Time: ≤2.30h CertifiedTerms of Payment: T/T, LC, PayPal, etc. CertifiedInternational Commercial Terms(Incoterms): FOB, EXW, CIF, CFR

AI-Powered supplier vetting

SummaryThe supplier demonstrates broad product development and customization capabilities, including 3D design, ODM, OEM for popular brands, and multiple customization modes. Its R&D organization includes specialized engineers, documented design controls, and evidence of new product development. Quality and service processes are documented and followed for complaints, corrective actions, supplier assessment, and finished-product inspection. Manufacturing support includes valid contracts with associated subcontractors and inventory capability, while export experience is stated as eight years with 51%–70% of sales from exports. Overseas service infrastructure is limited: the supplier has no overseas warehouse, showroom, agents, or branches, and reports zero countries served through such capabilities. Financial credibility cannot be assessed from the provided information.

Supplier typeThe supplier provides comprehensive energy solutions spanning project initiation, development, testing, production, and after-sales service. It also offers ODM services, OEM services for popular brands, inventory capability, and contracted manufacturing support, indicating a manufacturer with integrated development and production-related services.

After-Sales capabilityThe supplier has a documented and followed customer-complaint procedure, and its technology engineers provide technical support for production and after-sales service. The company description also explicitly includes after-sales service within its comprehensive solution coverage, supporting an established after-sales process.

R&D capabilityThe supplier reports new products during the past year, maintains an R&D team with masters and senior engineers across electronics, power supply, structure, technology, and electrochemistry, and retains auditable design input, output, review, verification, and validation documents. It also emphasizes technological innovation and applies technology from chip and cell-manufacturing partners to product R&D; however, no SDK is available.

Production capacityProduction-related controls include quality assurance, documented finished-product inspection instructions that are uniformly followed, valid manufacturing contracts with associated subcontractors, inventory capability, and stated average lead times of within 15 working days off-season and one month during peak season. These records support production and quality-control capability, although the stated quantity capability for own-brand products is only “1” and is not sufficiently defined for a capacity comparison.

Customization capabilityThe supplier offers customization from samples and designs, full, minor, and flexible customization, as well as 3D software design, ODM, and R&D-supported technical services. Engineers confirm customer requirements and support new product development, providing explicit evidence of broad customization capability.

Client casesThe supplier states that it maintains long-term, stable cooperation with world-renowned chip companies and cell manufacturing enterprises and provides OEM services for popular brands. It also reports participation in the GIFT & HOME Exhibition, but no specific customer names, project details, or independently verifiable case outcomes are provided.

Product Q&A

Q:How do you control the quality?

(1)Advanced precision stamping machine. (2)High quality precision mould & internal checking of mould. (3)Incoming material checking. (4)Production checking. (5)Finished products checking. (6)Export products checking.

Q:Do you have any related certification?

Yes, our battery products are recognized by UL, IEC62133, CE, UL, UN38.3,MSDS,KC etc certificates.

Q:What's the lead time of production?

It depends on order quantity. Normally, the lead time is about 5-7 working time for mass order.

Q:Are you a trading company or factory?

We're ISO manufacturer with 12000 sqm workshop and monthly capacity of 3.5 million lithium battery cells.

Q:How can I get a sample?

You can place a sample order so that we can proceed it until you get it.