What certificates are available?

We provide CE, CB, KC, MSDS, UN38.3 for most models. For custom designs, certificates can be applied for with fees paid by the buyer, refundable for large orders.

Can you print our logo on the product?

Yes, we will do this free of charge if the order quantity is big enough. Please contact us for more details.

How to handle quality problems?

Send photos/videos and return the defective battery. Our engineer analyzes it within 2 working days. We repair or replace free if confirmed as non-human factor.

Lithium Cell 501230 3.7V 4.2V Rechargeable Lithium Ion Polymer Battery Pack for Bluetooth Earphone

Name: Lithium Cell 501230 3.7V 4.2V Rechargeable Lithium Ion Polymer Battery Pack for Bluetooth Earphone
Brand: Shenzhen Resky Electronics Co., Ltd.
SKU: 712543652

Guangdong, ChinaShenzhen Resky Electronics Co., Ltd.

US$1.00-1.50

10 Pieces

Sample price:US$2.00/piece.Request sample

Product profile

Customization

Available

Type

Li-ion Battery

Cathode Material

NCM

Model NO.

RESKY-LP501230

Rechargeable

Yes

Size

Small

Nominal Capacity

150mAh

Charging Current

0.2c

Continuous Dishcarging Current

0.5c

Max Discharging Current

Weight

MOQ

10PCS

Cycle Life

500times

OEM Service

Yes

Charging Cut-off Voltage

4.2V

Power

0.55wh

Disharging Cut-off Voltage

Shipping

UPS, DHL, FedEx, TNT, by Air, by Sea

Lead Time

Within 15 Workdays

Warranty

12months

Certification

CE,RoHS,MSDS,Un38.3

Transport Package

1PCS/Carton

Specification

Standard

Trademark

OEM

Origin

China

HS Code

8507600090

Production Capacity

50000000PCS/Year

Key features

Fast Charging Capability: Fully charged in 2-3 hours with 4.2V rated voltage per cell.

Long Cycle Life: More than 500 repeated charge/discharge cycles for durability.

High Energy Density: Compact 3.7V 150mAh Li-ion polymer battery with high output.

Multi-Layer Safety Protection: Dual IC chips prevent short-circuit, overcharge, and overload.

Custom OEM Service: Professional engineers provide solutions for custom battery designs.

Wide Application Range: Suitable for Bluetooth earphones, lights, power banks, and more.

Comprehensive Certifications: CE, RoHS, MSDS, UN38.3, CB, KC certified for global safety.

Eco-Friendly Design: Free from lead (Pb) and cadmium (Cd) for environmental safety.

Company profile

High Repeat Buyers ChoiceIn-stock CapacityFast DeliveryR&D Capabilities

Shenzhen Resky Electronics Co., Ltd.

Guangdong, China

Business Type: Manufacturer/Factory, Trading CompanyExport Year: 2012-09-09Nearest Port: SHENZHEN, HONGKONGAverage Response Time: ≤3.13hTerms of Payment: LC, T/T, D/P, etc.International Commercial Terms(Incoterms): FOB, CFR, CIF, DAT, FAS, DDP, DAP, CIP, CPT, FCA, EXW, Others

AI-Powered supplier vetting

SummaryShenzhen Resky Electronics Co., Ltd. is identified as a China-based limited company with both trading and manufacturing/factory characteristics, offering electric vehicle batteries, lithium batteries, RC LiPo batteries, Li-polymer batteries, and chargers. It reports ISO 9001 certification, six to ten quality-control staff, stated annual lithium battery pack output of 2,000,000 sets, and broad export coverage. The supplier supports customization from designs and samples, full and flexible customization, and minor customization. Its R&D function includes one engineer responsible for customer-request confirmation, technical after-sales support, and new product development; relevant R&D audit documents are available, but no SDK is available. It reports OEM service for well-known brands, although no specific customer names or case details are provided. Financial records are indicated for 2021–2023, but the supplied slices do not provide sufficient financial metrics for a substantive credit assessment. An...

Supplier typeThe supplier is described as a limited company based in Shenzhen, China, with both "Trading Company,Manufacturer/Factory" characteristics in one record and "Trading Company" in another. Its stated business scope includes technical development, electronic and solar-energy products, polymer lithium batteries, domestic trade, and import/export activities, indicating a trading-led business with manufacturing/factory capability also reported.

CertificationsThe supplier reports ISO 9001 certification. A BV audit is also recorded, with an audit report period from January 30, 2024 to January 29, 2025; however, the supplied slices do not explain the audit result code or confirm that the certification remains current beyond that period.

After-Sales capabilityThe stated R&D engineer responsibilities include providing technical support for after-sales service, which is direct evidence of technical after-sales support. The supplier also reports in-stock service capacity, but the slices do not establish the breadth, response time, staffing level, or formal service process.

R&D capabilityThe supplier reports one R&D engineer responsible for confirming customer requirements, technical after-sales support, and new product development, and states that design-input, design-output, review, verification, and validation documents are available for audit. It also reports no available SDK, so the evidence supports basic product-development capability but does not establish broader software or platform innovation capability.

Production capacityThe supplier reports lithium battery pack output of 2,000,000 sets and in-stock service capacity, with six to ten quality-control staff and exports to multiple global regions. However, the status of any manufacturing-capacity contract is unknown, so contractual production assurance is not established.

Customization capabilityThe supplier explicitly reports customization from designs, customization from samples, full customization, flexible customization, and minor customization. This indicates a broad stated range of product adaptation services.

Client casesThe supplier states that it provides OEM services for well-known brands, which is evidence of experience serving branded customers. However, no customer names, product examples, order details, or verifiable case descriptions are supplied, so the depth and verifiability of its customer-case record cannot be assessed.