CE Certified 3.7V 400mAh Lithium Polymer Battery Lipo Battery 402540 Size for Humidifier and Beauty Instruments
Price:
CN¥6.76-10.35
MOQ:
3
Delivery Time:
Negotiable
Brand:
VATS Battery or Netural
Product Description
CE Lithium Polymer Battery 3.7V 400mAh 402540
High-quality CE certified lithium polymer battery designed for humidifiers and beauty instruments. This 3.7V 400mAh 402540 model offers reliable power with advanced safety features.


Product Specifications
| Product Name | Polymer Lithium Battery | Model | 402540 |
|---|---|---|---|
| Voltage | 3.7V | Capacity | 400mAh |
| Charge Voltage | 4.2V | Cut-off Voltage | 2.75V |
| Std. Charging | 0.2C | Max. Charging | 1.0C |
| Warranty | 12 Months | Certification | ISO9001/CE |
| Application | Beauty Instrument | Samples | Support free samples |

Battery Quality Features
- Grade A cells ensuring high and full capacity performance
- Dual IC chip protection against over-charge, over-discharge, over-current, and short circuits
- Injection technology for enhanced battery stability
- Long life cycle for extended product durability
Technical Characteristics
- Customizable sizes, models and capacities with thickness range from 1 to 12mm
- Wide capacity range from 15-10000mAh
- Built-in BMS or PCB protection for over-charge and discharge safety
- Lightweight design: 1/3 weight of lead acid batteries, 70% size/weight of Ni-MH/Ni-Cd batteries
- Customizable voltage, capacity, and mating plug/connector options
- Wide operating temperature range: -20°C to 60°C
- Steady performance with high power output and low self-discharge rate (<3% monthly)
- No memory effects with highly efficient charging capability
- Environmentally friendly green product with no pollution
- Short delivery times with comprehensive service support
Packaging & Shipping
We offer multiple shipping options to meet your needs:
- HK UPS: 4-6 days delivery
- Air Cargo: 7-10 days delivery
- Sea Shipment: Approximately 1 month delivery
With 10 years of experience and trustworthy forwarder partners, we can arrange sea, air, and express transportation efficiently.

Application Areas

- Civil consumption: digital cameras, MP3/MP4 players, PDA, electronic dictionaries, e-book readers
- Electric tools: saws, electric drills, and power tools
- Small household appliances: portable vacuum cleaners, electric mops
- Electric toys: remote control toys, model boats and ships
- Electric vehicles: electric bicycles and cars
- Lighting: emergency lights, solar lights, LED lights
- Beauty and health care: electric beauty devices, hairdressing tools
- Medical devices: portable electronic medical equipment, hearing aids
- Other applications: instruments, GPS devices, access control systems
Our Certifications

Company Information


Our Services & Strengths
- ISO9001:2015 certified factory with strict environmental controls
- Comprehensive quality assurance using high-quality materials and 100% production inspection
- Professional R&D center offering customized size, capacity, PCM, wires and connectors
- Low MOQ with strong production capacity and fast dispatch options
- Authorized international certifications meeting global standards
- Excellent service system with quick response times and 12-month warranty
Production Process - Workshop


Our facilities include water purification systems, research & test labs, plate workshops, cell workshops, capacity grading stations, and PACK workshops.
Production Process - Equipment


Advanced equipment including mixing LDH-60L, coating machines, calenders, formation/capacity grading systems, auto-injection machines, and winding cell equipment.
Customization Services
We specialize in custom battery solutions. Contact us directly to confirm necessary parameters for a customized battery design.
- High standard quality management system with ISO9001:2015 and TUV-UL depth certification
- We provide not only batteries but also comprehensive solutions for our customers

Why Choose Us

Frequently Asked Questions
Q: How about the warranty of li-ion batteries?
A: Warranty of li-ion battery can be as long as 1 year.
Q: Do you have current sample in stock?
A: We usually have stock for battery cells. For battery packs, we can finish samples quickly once order is confirmed.
Q: Can I have a sample order?
A: Yes, we welcome sample orders and offer OEM/ODM services with customization available.
Q: What's the delivery time for mass production?
A: Usually 25-30 days, depending on quantity, material, and battery cell model.
Q: What kind of certificates could you provide for the battery?
A: We can apply for CE, UL, UN38.3 and other certificates. Certificate fees apply for custom designs.
Q: What is your quality control process?
A: We are ISO9001 certified and perform 100% inspection on all batteries before delivery.
Quick Response Contact
Contact: Lynn
Mobile/Skype/Whatsapp/Wechat: +86 13476615395
Tel: 86-0755-86909458
Web: www.vatsbattery.com

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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Shenzhen Vats Power Source Limited
Location
1A 702, Huaqiang Creative Industrial Park, Biyan Street, Guangming District, Shenzhen, Guangdong Province,China
Contact Person
Lily