Welcome to SUNLY

Custom Rechargeable Battery Pack Service

Sunly as a custom lithium-ion battery pack manufacturer supplies high-quality custom built battery packs, for business or company , with ODM OEM battery service. No MOQ required

Want Custom Rechargeable Battery Pack?

Sunly the best Chinese lithium battery manufacturer offers customized battery packs in the battery manufacturing industry, for different uses and applications. has designed, developed, and manufactured high-quality, reliable, custom battery packs of all chemistries that not only optimize performance but meet the requirements of OEM batteries partners. We specialize in the design and manufacturing of lithium-ion battery systems including in-house circuit and firmware design, with our technical expertise and chemistry knowledge it assures the safest and best match for your application.

Custom Lithium-Ion Battery

Custom lipo battery

Custom 18650 battery pack

Custom nimh battery pack

Custom Lithium Iron Phosphate Battery

Custom Lithium Battery Packs

Custom Lithium-Manganese Dioxide Battery Packs

Custom Nickel Cadmium Battery Packs

Get Custom Lithium Ion Battery Pack Manufactured From China

Sunly is among the top OEM lithium-ion battery pack manufacturers in China, providing customers with extensive standard and custom options for battery packs, modules, and cells. We export lithium-ion battery packs to  Australia, Canada, United Kingdom, United States,India.

Fill Up Custom Built Lithium Battery Specification Form

Cannot Find Your Ideal Battery Pack?

Sunly as a  certified custom battery pack manufacturer delivers custom rechargeable battery pack services that fit customers’ lithium battery requirements and specifications, helping you build your own lithium battery packs no matter which country you’re in. 

Customization OptionsDetails
BMS Functions
  • Communication Protocol (SMBus, CAN)

  • Communication Protection

  • SOC Indicator

  • Current Detection

  • Abnormal Log

  • Self-Inspection

  • Using Time Record

Charge Management Options
  • Charging Over-Voltage Protection
  • Charging Over-Current Protection
  • Charging Over-Temperature Alarm/Protection
  • Charging Low-Temperature Alarm/Protection
  • Abnormal Voltage Gap Warning
  • Charging Short Circuit Alarm/Protection
  • Self-Balancing
Discharge Management
  • Discharging Over-Current Protection
  • Discharging Under-Voltage Protection
  • Battery No-Load Protection
  • Discharging Short Circuit Alarm/Protection
  • Discharging Over-temperature Alarm/Protection
  • Discharge Low-Temperature Alarm/Protection
Other Functions
  • Self-Heating Technology for Low Temperature
  • Ultra-Low Power Consumption
  • Reverse Connection Protection
  • Self-Discharging in Fully Charged Storage
Customization OptionsDetails
Lithium Battery Shapes
  • Round lithium battery
  • Curved lithium battery
  • Thin lithium battery
Lithium Battery dimension
  • Customizable 
Lithium Battery Configuration
  • battery voltage
  • battery capacity
  • battery current rating
  • battery temperature
  • battery energy density
Performance Certification & Standard
  • GB/T182287
  • UL
  • CE
  • RO
  • UN38
  • MS
  • FCC
  • KC
Customization OptionsDetails
Lithium Battery Materials
  • PC
  • ABS+P
  • ABS
Lithium Battery Explosion Proof Strength
  • UL 
Lithium Battery Waterproof Grade
  • IPX
You-required Configuration
  • Styled Case
  • Heat Dissipation
  • Size & Weight 
  • Shock Resistance 
Customization OptionsDetails
Custom Lipo Battery PacksCompared to 18650 batteries, lithium polymer battery packs are lighter and can be made into a thin, flexible shape, making them ideal for use in portable electronic devices.
Custom LiFePO4 Battery PacksRechargeable LiFePO4 batteries are more stable, have a higher energy density, and can be discharged and recharged more times than their counterparts.
Custom 18650 Battery PacksOrder high-quality NiMH 18650 batteries including a higher energy density and a lower self-discharge rate, making them long-lasting power sources.

Fit Your Device With Sunly Custom battery pack solution

Fit for different commercial and industrial battery solution, including but not limited to custom mobile battery, custom portable battery, custom car battery, custom motorcycle battery, custom usb battery pack, custom cell phone battery pack.

Custom EV Battery Pack

Making lithium ion cells quality as Gens Ace, Turnigy, Zippy, and Zeee Power, Sunly makes custom batteries for radio-controlled cars, quad-copters, and UAVS.

Custom E-Bike Battery Pack

Sunly custom battery packs for e-bikes offer the same performance and reliability as those top brands (Luna Cycle, Tritek Battery, and Xander ) but at a more reasonable price.

Custom RC Battery Packs

Sunly battery packs are constructed from exceptionally engineered cells, biring the quality of allowing them to generate continuous energy discharge for electric vehicles.

Experienced 18650 Battery Pack Designer

Your 18650 battery pack configurations are exceptionally designed in our facilities using our software and strict quality standards.

One of kind 18650 battery design

Cheaper Than Built Your Own battery pack, we deliver professionally-built 18650 battery packs designed with superb engineering precision to ensure their performance and safety

Automatically calculated battery packs

Use our 18650 battery pack design calculator including essential metrics, such as the load, voltage, duration, and battery type.

a worker is operating the lithium ion battery making machine

Get Your Custom-Designed Battery Packs In Sunly​

The experience, technology, and competent workforce of SunlyPower enable us to fulfill the custom rechargeable battery pack

Build Your Battery Pack In Sunly Custom Battery Assembly

Sunly the best Chinese 18650 battery manufacturer has a tested-and-tried reputation in the battery manufacturing industry, boasting state-of-the-art facilities and experienced teams of engineers, chemists, and builders.

Match proper battery pack units & components

  • Corfirm ideal battery configuration (cell choice, form factor, and special requirements)
  • Providing samples based on the drafted configuration

Fulfill Your Required 18650 Battery Layout

  • Ampere or output
  • mAh output
  • Voltage output
  • Watt output 
  • Charging time
  • Safety systems
  • Weight

Manage Your Battery Management System 18650

  • battery pack system use printed circuit boards (PCBs). 
  • implement mechanisms and commands to ensure the safety

Inspect Battery Manufacturing From Start to End

  • create sample batteries from the configuration and specifications 
  • lithium ion cell dimensions
  • lithium ion cell capacity
  • battery cell packaging


SAFETY is our top priotiry!
Choose well-known battery core brands. We developed our own battery management system (BMS) to achieve intelligent balance, high stability, high-precision detection and other multiple protection
How it works

Easy Custom OEM Battery Service

Take a survey location

According to the customer's application scenario, we will provide lithium battery-related solutions or product requirements list.

Estimate your budget cost

After knowing the customer's procurement budget, operating costs, and other costs, we help customers provide the most reasonable lithium battery solution.

Develope your project

We provide whole solutions or specifications within 48 hours, from cell selection, circuit diagram, and structural design, to final product testing.​

Lauch prototype project

Welcome to sample requests, 3-days making samples, 7-days delivery out, and diversified products for customers to choose.

a worker is operating the lithium ion battery making machine

Your reliable oem battery service provider

The operation of the dual system and the combination of advanced battery testing equipment, Becoming a reliable portable power manufacturer, Sunly has passed the certifications including CE, ISO, ROHS,KC, PSE, TISI, BSMI and approval of many authoritative organizations at home and abroad, including US, UK, Australia, Canada, South Africa and more.

High quality 18650 battery pack
Custom made & built battery packs
Ensured 18650 battery safety
Competitive battery pack cost

battery brands we work with

We have served major brands all over the world who needed oem battery service, including Bosch, Honeywell, Audio-Technica, Parrot, and JD. You can guarantee that we can deliver the same quality of service and more to you!

Get in touch
Do not hesitate to contact us via the form below, we will reply to your message within 24 hours or sooner.


+86 184 7633 0578

+86 769 80285025


Let's start your project