Is it OK to print my logo on the battery?

Yes. Please inform us formally before production and confirm the design based on our sample.

Do you offer a guarantee for the products?

Yes, we offer a one-year warranty to the Li-ion battery products.

How do you deal with faulty products?

Defective rate is less than 0.2%. During warranty, we send new batteries for small quantities or repair/resend defective batches.

21700 5000mAh Cylindrical Li-ion Cell for Glare Flashlight

Name: 21700 5000mAh Cylindrical Li-ion Cell for Glare Flashlight
Brand: Howell Energy Co., Ltd.
SKU: 1959649341

Guangdong, ChinaHowell Energy Co., Ltd.

US$1.20-2.15

1,000 Pieces

Sample price:US$2.20/piece.Request sample

Product profile

Customization

Available

Type

Li-ion Battery

Cathode Material

NCM

Model NO.

21700 3.7V 5000mAh

Rechargeable

Yes

Size

Small

Weight

68g

Max Charge Voltage

4.2V

Max Discharge Voltage

2.75V

Standard Charge

0.2c

Standard Discharge

0.2c

Maximum Continuous Charge Current

1.0c

Maximum Continuous Discharge Current

1.5c

Charge Temperature

0~45 Degree

Discharge Temperature

-20~60 Degree

Storage Temperature

-20~40 Degree

Cycle Life

>800 Cycles

Certificate

CE/RoHS/UL/IEC/CB/Bis/Un38.3/MSDS

Transport Package

130 Per Carton

Specification

21.5*70mm

Trademark

OEM

Origin

China

HS Code

8507600090

Production Capacity

1000000PCS Per Day

Key features

High Capacity & Energy Density: 5000mAh capacity with NCM cathode material for superior gravimetric energy density.

Long Cycle Life: Expected cycle life exceeds 1000 cycles, ensuring long-term reliability.

Comprehensive Certifications: Certified with CE, UL, RoHS, UN38.3, IEC62133, and BIS for global safety standards.

Versatile Applications: Ideal for EVs, solar storage, medical devices, and portable electronics.

Low Self-Discharge Rate: Maintains charge with less than 3% monthly self-discharge for stable storage.

Flexible Customization: Supports full customization including logo printing and design adjustments.

Safe & Green Energy: No toxic materials, no memory effect, and strict quality control with <0.2% defect rate.

Company profile

100% Finished Products InspectionStandardized quality controlFull CustomizationManagement Certification

Howell Energy Co., Ltd.

Guangdong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 15 Years CertifiedNearest Port: Shenzhen Port, Hong Kong PortAverage Response Time: ≤4.65h CertifiedTerms of Payment: LC, T/T, PayPal, etc.

About Our Factory & Business Background

AddressB1010, Genzon Times Square, Longgang, Shenzhen, Guangdong, China

Plant Area2329 square meters

Registered Capital12,500,000 RMB

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: one month

Minimum Order Quantity1 Pc

Supply Chain Partners30

Our Production Capability & Technical Expertise

Main ProductsLiFePO4 Battery, Li-ion Battery, Solar Energy Storage Battery, RV/Electric Vehicle Battery, Solar Battery, Customized Battery Pack, UPS Battery, Solar Street Light Battery, Battery Pack, Motorcycle Battery

Production Lines6

Production MachinesAutomatic production line, Battery sorting machine, Heat shrink film machine, Coding machine, Aging rack, Battery detection system, Lithium batteny pack equalization repair analyze, Lithium battery pack intelligent charger, Lithium battery protection board tester, Battery comprehensive tester, High performance battery testing system, Battery heavy impact tester, Battery needle punching and extrusion integrated machine, Programmable constant temperature and humidity chamber

QA/QC inspectors3 people

Inspection Type for Finished Products100% inspection(Visual inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers3 people

Traceability of Raw MaterialsYes

Test Reports for Raw MaterialsUL, Others