Tel: +86 13632635357
WhatsApp: +86 13632635357 
Email: sales@miyoenergy.com
3.7 V Li-ion Battery 500-1000mAh
3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
  • 3.7 V Li-ion Battery 503040-600mah
3.7 V Li-ion Battery 503040-600mah
  • Model: 503040
  • SKU: YXE503040
Functions reliably even at -40℃, ideal for harsh environments. A stable 3.7 V output ensures consistent power delivery for various electronics. Extended cycle life maximizes usage, ensu
  • Functions reliably even at -40℃, ideal for harsh environments.

  • A stable 3.7 V output ensures consistent power delivery for various electronics.

  • Extended cycle life maximizes usage, ensuring cost efficiency.

  • Built-in protections against overcharging, over-discharging, and short circuits for secure performance.

  • Tailored for diverse device needs with customizable capacities and sizes.

Product Details

discharge-rate-normal-ternary.webp
Lithium batteries exhibit varying discharge rates. Mingyu batteries support a maximum discharge rate of 5.0C, delivering high power output in short durations.
long-cycle-life-lithium-polymer-battery.webp
Mingyu lithium battery maintains over 80% capacity after 500 cycles at room temperature,utilizing 0.5C charge and discharge conditions.
ultra-low-self-discharge.webp
Batteries exhibit differential self-discharge rates at 100% and 70% charge states.
Self-discharge is higher at 100% state of charge (SOC) compared to 70% SOC.
wide-temperature-range-normal.webp
Lithium batteries operate within the -20°C to 60°C discharge temperature range.
 Mingyu custom low-temperature batteries can be used for -40°C to 55°C operation, catering to diverse outdoor scenarios.
Battery Capacity Testing
Before shipment, each lithium battery undergoes meticulous testing to validate voltage, current, and other essential parameters, ensuring consistency and reliability in performance.
Environmentally Friendly
We use A-grade batteries, eco-friendly, safe and no droplet, energy-saving and environmentally friendly, economical and durable.
Environmentally Friendly

Li-ion Battery Series Table Display

Battery   NameLithium Polymer Battery
CertificationUN38.3 / IEC62133 / KC / CB /   UL1642 / UL2054 / BIS / WERCS / PSE / CE / ROHS /CCC
Nominal   Voltage3.7V
ModelCustomized as needed
Advantage5C fast charging technology   features, 10 minutes charging more than 80%.
High cycle life technology   features, battery life is 3 times that of the industry
Semi-solid-state lithium battery   technology features, the cycle life is increased by 30%-50% compared with   ordinary liquid<br>batteries, and the battery capacity is increased by   20% 
High and low temperature lithium   battery technology characteristics, ultra-low temperature 0.2C discharge   battery capacity retention rate of more than 70%. 
Graphene lithium battery   technology features, internal resistance reduced by 30%, cycle doubled, and   rate increased by 20% 
High energy density   technology 
OEM/ODMThickness range from 2mm to 14mm
Capacity range from 50mAh to   10000mAh+
Mini Lipo Battery High   Temperature Battery,LiPo Battery Pack,Uitra Thin LiPoBattery,Smallest LiPo   Battery 
Cycle   life500 Times
Warranty12 Months
AppllcatlonsOffice Series
Intelligent robot series   products
Personal care and beauty   products
Smart home series products
Learning and education products
Pet series products
IoT GPS series products
Security products
Wearable products
Health care series products
Tablet PC series products
Model airplane series products

3.7 V Li-ion Battery 503040-600mah Lithium Ion Battery Application

Lithium Polymer Battery for Smart Temperature Control Water Bottles

Our batteries for smart temperature control water bottles feature high energy density and low power consumption, supporting continuous temperature display and long-lasting battery life. They adopt a compact design to fit seamlessly into slim bottle structures, delivering stable performance for daily hydration tracking. Besides, they ensure reliable operation even with frequent use, keeping your water temperature visible at all times

Smart insulated cup.jpg



Lithium Polymer Battery for Automatic Pet Feeders

Our batteries for automatic pet feeders feature long cycle life and low self-discharge rate, supporting scheduled feeding and continuous operation even during power outages. They adopt a stable power output design to ensure consistent feeder performance, delivering reliable power for pet care while you’re away. Besides, they maintain long endurance to keep your pets fed on time, with no interruptions to their daily routines.

Automatic pet feeder.jpg



Lithium Polymer Battery for Kids’ Dictionary Scanning Pens

Our batteries for kids’ dictionary scanning pens feature high energy density and quick charging capability, supporting long study sessions with continuous scanning and translation functions. They adopt low-power consumption design to ensure all-day use between charges, delivering stable performance for language learning and homework help. Besides, they provide safe and reliable power for frequent use, keeping kids’ learning tools ready whenever needed.

Intelligent Learning Pen.jpg



Lithium Polymer Battery for Neck & Shoulder Massagers

Our batteries for neck and shoulder massagers feature high energy density and long cycle life, supporting extended massage sessions with multiple intensity levels. They adopt a compact, lightweight design for easy portability, delivering stable power for relaxing massages at home, in the office, or while traveling. Besides, they ensure consistent performance with frequent use, keeping your massage device ready to relieve stress anytime.

Massage device.jpg



Lithium Polymer Battery for Home Blood Pressure Monitors

Our batteries for home blood pressure monitors feature stable voltage output and long cycle life, ensuring accurate and consistent readings for daily health monitoring. They adopt low-power consumption design for extended use between charges, delivering reliable performance for at-home blood pressure tracking. Besides, they maintain consistent operation even with frequent use, supporting uninterrupted health management for the whole family.

Portable blood pressure monitor.jpg

The Complete Guide For 3.7 V Li-ion Battery 503040-600mah

This 3.7V lithium-ion battery (503040, 600mAh) is a compact rechargeable cell for portable low-power electronic devices.

Part 1. Advantages and Applications

It features compact size, high energy density and stable power output. Widely applied in smart wearables, Bluetooth devices, mini sensors and other small electronic gadgets. Rechargeable design reduces costs and is eco-friendly, available for standard and customized orders.

Part 2. Technical Specifications

Nominal Voltage: 3.7VRated Capacity: 600mAhIt complies with universal lithium-ion charging standards and delivers stable discharge performance. Proper use maintains battery stability and prolongs its service life.

Part 3. Safety and Handling

Built-in multi-protection circuits protect against overcharge, over-discharge, over-current, short circuit and overheating. Use and store the battery in a cool, dry and ventilated area, away from direct sunlight and moisture. Follow product guidelines strictly.

Part 4. Maintenance and Longevity

Avoid deep discharge in daily use and only use certified lithium-ion chargers. For long-term storage, keep the charge level at 40%-60%, and recharge every 3 to 6 months to prevent capacity loss.

Part 5. Buying Guide and Recommendations

Select 503040-600mah lithium batteries from MingYu energy. Our strict quality control and professional technical support ensure stable and reliable performance for your products.


  • Q1. Can you provide cell traceability?
  • Q2. Does charging in low temperature damage the battery?
  • Q3. Do you have formal quality standard documents?
  • Q4. Can you ship via battery-specialized lines?
  • Q5. Can you send photos/videos during production?
  • Q6. Can samples go through the same testing process as mass production?
  • Q7. Is your BMS in-house or outsourced?
  • Q8. Can batteries be connected in series/parallel?
Share the page to
High Energy Density
It stores large amounts of energy in a smaller and lighter package
Longer Cycle Life
Withstands extensive charge and discharge cycles
Low Self-Discharge
Maintains power longer when not in use
Safety
Minimizes the risk of accidents and ensures safe operation
Related Products
View More Batteries
Related Articles
How to Revive Dead Batteries and Fix Lithium Batteries that
To meet the growing demand of global customers for advanced lithium battery solutions, Mingyu has recently expanded its production with the addition of multiple automatic winding machines and an autom……
Mingyu + 2026-03-31
How to Revive Dead Batteries and Fix Lithium Batteries that
To meet the growing demand of global customers for advanced lithium battery solutions, Mingyu has recently expanded its production with the addition of multiple automatic winding machines and an autom……
Mingyu + 2026-03-31
How to Revive Dead Batteries and Fix Lithium Batteries that
To meet the growing demand of global customers for advanced lithium battery solutions, Mingyu has recently expanded its production with the addition of multiple automatic winding machines and an autom……
Mingyu + 2026-03-31
How to Revive Dead Batteries and Fix Lithium Batteries that
To meet the growing demand of global customers for advanced lithium battery solutions, Mingyu has recently expanded its production with the addition of multiple automatic winding machines and an autom……
Mingyu + 2026-03-31
Get a Free Quote Now!
Your Trusted Partner for Advanced Battery Solutions!
Please fill out the form with your contact details or give us a call, and we will get back to you within 24 hours.
Contact Us
  • WhatsApp/Skype
    +86 13632635357
  • Hotline
    +86 13632635357
  • Email
    sales@miyoenergy.com
Follow Us
Copyright © 2026 Mingyu Battery. All rights reserved.