Can you print our logo on the product?

Yes, we can print your logo/brand on the product free of charge if the order quantity is big enough. Please contact us for more details.

What certificates are available for these batteries?

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

How to handle quality problems after sales?

Please send photos and videos of the problem, then return the defective battery by express. Our engineer will analyze it within 2 working days.

Li-ion 18650 Battery Cell 3.7V 5200mAh Rechargeable Lithium Ion Battery Pack for Flashlight

Name: Li-ion 18650 Battery Cell 3.7V 5200mAh Rechargeable Lithium Ion Battery Pack for Flashlight
Brand: Shenzhen Resky Electronics Co., Ltd.
SKU: 796652562

Guangdong, ChinaShenzhen Resky Electronics Co., Ltd.

US$3.00-4.00

10 Pieces

Sample price:US$4.00/piece.Request sample

Product profile

Customization

Available

Type

Lithium-Ion Batteries

Usage

Car, Bus, UPS, Electric Power, Lighting, Electric Bicycle, Boat, Moutain Ebike, Electric Skateboard, Electric Golf

Model NO.

RESKY-1S2P

Nominal Voltage

3.7V

Discharge Rate

Low Discharge Rate

Shape

Square Battery

Electrolyte

Li-ion

Installation

Packaged

Rechargeable

Chargeable

Nominal Capacity

5200mAh

Structure

1s2p

Charging Cut-off Voltage

4.2V

Discharging Cut-off Voltage

2.75V

Charging Current

Continuous Discharging Current

Peak Discharging Current

Power

19.24wh

Payment Term

T/T

Cycle Life

500cycles

Warranty

12months

Weight

105g

Certification

CE,RoHS,MSDS,Un38.3

Lead Time

Within 15days

Shipping

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

Transport Package

1PCS/Carton

Specification

3.7v 5200mAh

Trademark

OEM/RESKY

Origin

Shenzhen

HS Code

8507600090

Production Capacity

50000000PCS/Year

Key features

Customizable Size: Size is customized to meet specific application requirements.

1-Year Warranty: One year warranty coverage for non-human factor quality problems.

High Safety Standards: Passed short circuit, overcharge, over discharge, thermal shock, and drop tests.

Long Cycle Life: Lifespan exceeds 500 cycles maintaining 80% prime capacity.

Professional Customization: Customized packs, tags, labels, plugs, connectors, and protection available.

Strict Quality Control: 100% inspection before delivery under ISO9001 quality control systems.

Wide Application Range: Suitable for flashlights, e-bikes, medical devices, power tools, and more.

Multiple Certifications: Provides CE, CB, KC, MSDS, and UN38.3 certifications for most models.

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: ≤3.25hTerms 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.

Product Q&A

Q:What is the warranty period?

We provide a 1-year warranty after leaving our factory. If non-human factor quality problems are confirmed, we will repair or replace the battery for free.

Q:What is the lead time for orders?

The lead time is 7-10 days for samples and 15-20 workdays for large quantities.

Q:Can I get a sample order?

Yes, sample orders are welcome. We can offer free samples if the quantity is not above 3 pcs; you only need to pay the shipping cost.

Q:What payment terms do you accept?

We accept T/T (50% deposit, balance before shipment), PayPal, Western Union, and Cash. For small amounts, full payment via PayPal or Western Union is also accepted.

Q:Do you provide customization services?

Yes, we have professional engineers to provide solutions according to special requirements. Customized packs, tags, labels, plugs, connectors, and protection are available.