How many cycles can a 3.8V HV battery provide?

500 cycles or more with at least 80 percent capacity retention under standard test conditions.

Can HV LiPo batteries be used in high-drain applications?

Yes. HV LiPo batteries are suitable for high-drain applications due to improved voltage stability, reduced voltage sag, and enhanced power delivery capability under load.

Do HV LiPo batteries require special protection circuits (PCM/BMS)?

Yes. HV LiPo batteries should be paired with compatible protection circuits that support 4.35V charge thresholds to ensure safe voltage control, overcharge protection, and long-term stability.

Can I use my existing 3.7V charger to charge a 3.8V HV battery?

No. A 3.7V charger cuts off at 4.20V, which will only partially charge an HV battery. Always use a 4.35V specific charger.

High Capacity Lithium Polymer Cell 3.85V 850mAh for Wearable Device with MSDS

Name: High Capacity Lithium Polymer Cell 3.85V 850mAh for Wearable Device with MSDS
Brand: Guangdong Ufine New Energy Co., Ltd
SKU: 2290542925

Guangdong, ChinaGuangdong Ufine New Energy Co., Ltd

US$3.50

5-4,999 Pieces

US$1.64

5,000-9,999 Pieces

US$1.57

10,000+ Pieces

Sample price:US$3.50/piece.Request sample

Product profile

Customization

Available

Type

Li-ion Battery

Cathode Material

LCO

Model NO.

UFX 502065

Rechargeable

Yes

Size

Small

Cycle Life

500 Cycles

Weight

Typically 12.8g

Capacity

850mAh

Nominal Voltage

3.85V

Charging Voltage

4.4V

Charging Temperature

0~45°C

Discharging Temperature

-20~60°C

Certification

MSDS

Battery Type

Lithium Polymer Cell

Cathode

Lco

Transport Package

410*255*230mm

Specification

5x20x67mm

Trademark

N/A

Origin

China

HS Code

8507600090

Production Capacity

500000000

Key features

Maximizes usable energy per cycle, delivering higher energy density than standard 3.7V LiPo batteries and extending device runtime within the same footprint.

Engineered with advanced HV chemistry that minimizes voltage sag under peak loads, ensuring stable power output for high-drain electronics and preventing performance drops during operation.

Built with a low self-discharge rate even under high-voltage storage conditions, maintaining charge longer and reducing maintenance requirements for intermittent-use devices.

Supports a 3.0V to 4.35V operating range, enabling higher usable capacity per cycle, improving system efficiency, and reducing recharge frequency.

Maintains a flatter discharge curve, ensuring stable and consistent performance throughout the entire usage cycle instead of rapid late-stage power decline.

Suitable for IoT devices, wearables, medical electronics, and industrial handhelds where space is limited but long-lasting and stable power is required.

Compliant with air and sea transport regulations for lithium batteries, ensuring safe international shipment and reliable global deployment.

Flexible customization, including capacity, dimensions, connector type, and wire length, is supported by factory-direct production with strict batch consistency and full traceability.

Company profile

Management CertificationProduct CertificationR&D CapabilitiesQuality Assurance

Guangdong Ufine New Energy 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. CertifiedExport Year: 4 Years CertifiedNearest Port: Guangzhou Port, Shenzhen PortAverage Response Time: ≤1.26h

About Our Factory & Business Background

AddressBuilding 41, Sunac Zhimei Industrial Valley, Siqian Town, Xinhui District, Jiangmen, Guangdong, China

Plant Area11786 square meters

Number of Employees238

Registered Capital30,000,000 RMB

Terms of PaymentT/T, PayPal, D/P, Western Union

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

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity1

Supply Chain Partners27

Our Production Capability & Technical Expertise

Main ProductsLithium Polymer Battery, Lithium Battery Pack, Low Temperature Battery

Production Lines10

Production MachinesCapacity Cabinet, Coating Machine, Forming Cabinet, Fully Automatic Liquid Injection Machine, Fully Automatic Winding Machine, High Vacuum Oven, Roller Machine, Sheet Processing Machine, Top-side Sealed All-in-one Machine, XRAY Machine, Automatic Sorting Machine, CCD Testing Machine, Thickness Tester, Density Testing Instrument, Diaphragm Permeability Tester, Digital Comprehensive Tester, Draught Drying Cabinet, RoHS Tester, Temperature and Humidity Chamber

QA/QC inspectors12 people

Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)

Inspection Method for Finished ProductsHave instructions and uniformly followed

R&D Engineers19 people

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2019-12-12

Main MarketsNorth America, Europe, East Asia(Japan/ South Korea), Domestic

Repeat Buyers Choice50%~80%

Number of Foreign Trading Staff9

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Management System CertificationISO9001:2015, ISO45001:2018, ISO14001

Product CertificationCE, CCC, UL, RoHS, FCC, Others

Cooperated with Fortune 500No

Product Q&A

Q:Can I get samples of lithium batteries before placing a bulk order?

Yes, many suppliers offer samples of lithium batteries for testing and evaluation purposes. However, there are costs associated with obtaining samples, including sample fees and freight charges.

Q:What is the delivery time after placing an order with Ufine Battery?

Normally, it takes 10 to 12 days for air transportation, and more than 45 days for sea transportation.

Q:How long does it take to make a sample of a custom battery?

It takes 1~3 days to make regular samples, and 7~10 days to make handmade samples. The time required increases with the number of samples.

Q:What is the difference between a high-voltage LiPo battery and a standard 3.7V LiPo battery?

An HV LiPo battery charges to 4.35V, while a standard 3.7V LiPo charges to 4.20V. The higher voltage allows HV cells to deliver more usable energy, longer runtime, and better voltage stability in the same size.

Q:What is the main benefit of HV LiPo in system design?

The main benefit is higher energy output at the same size, which allows designers to reduce battery volume or extend device runtime without changing product form factor.