402040 300mAh 3.7V Reliable Li‑Polymer Rechargeable Battery Cell
Price:
$0.91-1.28
MOQ:
10
Delivery Time:
7 work days
Brand:
VATS Battery or Neutral
Product Description
402040 300mAh 3.7V Reliable Li‑Polymer Rechargeable Battery Cell
Product Specifications
| Item | Details |
|---|---|
| Model | 402040 |
| Battery Type | Lithium polymer battery |
| Dimension | 4.0±0.2 * 20±0.5 * 40±2.5 mm (Thickness*Width*Length) |
| Nominal Capacity | 300mAh, custom size / capacity / voltage available |
| Nominal Voltage | 3.7V |
| Max Cut‑off Voltage | 4.35V |
| Standard Discharge Current | 0.2C‑0.5C |
| Max Discharge Current | 1C |
| Cycle Life | 500 charge‑discharge cycles |
| Connector | JST / Molex, customizable |
| Certification | KC certified |
Product Overview
This KC‑certified li polymer battery delivers steady 3.7V power for compact small electronics. As a practical lithium ion battery cell, it fits wearable and portable gadgets, preventing sudden power loss during daily use. Custom options and sample testing are supported for your project needs.
Key Features
- Stable Power Output for Compact Gadgets: Built as a 3.7V wearable device battery, it maintains consistent discharge performance under standard load, ensuring your portable devices run smoothly without unexpected shutdown.
- Reliable Long Cycle Performance: Up to 500 working cycles for repeated charge and discharge, providing extended service life and lower long‑term replacement cost for your finished products.
- Flexible Custom Connector & Parameters: Select JST or Molex connector to match your hardware. Custom size, capacity and voltage are acceptable with no extra modification work needed on your end‑product.
- Strict KC Safety Certification: This lithium ion battery cell passes KC certification, meeting basic safety requirements for importing electronic goods into Korea and many other regions.
- Factory Direct Supply & Sample Support: As original manufacturers, we provide sample testing before bulk orders, allowing you to verify real performance before placing mass production orders.
- Practical Lead Time Arrangement: Stock items ship within 3‑7 days; custom production finishes in 2‑3 weeks, helping you arrange inventory and project schedules efficiently.
Product Applications
This versatile 3.7V wearable device battery fits a wide range of portable consumer electronics for home, commute, travel and outdoor camping scenarios.
Car recorders
GPS navigators
Smart home appliances
Massagers
Digital cameras
Sprayers
Dental rinsers
Smart bracelets
Blackhead remover devices
Remote controls
Smart watches
Electronic toy guns
Electric air pumps
Smart trash cans
Bluetooth speakers
Fingerprint locks
Electric hair clippers
Dog training collars
Pest repellers
Camping lamps
Robot vacuum cleaners
Electric toothbrushes
Pet water fountains
Electric shavers
Mini handheld fans
Other compact smart products
Frequently Asked Questions
Can this li polymer battery work for my custom wearable project?
Yes. It acts as a 3.7V wearable device battery for most compact wearables. Send your device dimension and power requirement, we check compatibility for you. Custom capacity and size are also supported.
What is the typical cycle life of this lithium ion battery cell?
It reaches up to 500 standard charge‑discharge cycles under proper charging condition. Real service life varies with actual discharge load.
Do you support sample testing before bulk purchase?
Samples are available. You can test performance, dimension and connector fitting for your device before placing large orders.
What is your production and shipping lead‑time?
In‑stock items take 3‑7 working days. Custom orders require 2‑3 weeks for production. All packages follow international air & sea shipping standards.
Can I change the connector type on this li polymer battery?
JST and Molex connectors are optional. Notify your connector requirement when you place order.
Does this cell carry KC certification?
Yes, this model holds KC certification, suitable for goods selling into South Korea market.
Is custom capacity or dimension acceptable?
Yes, we support customized size, capacity and voltage according to your project specification.
What is your after‑sales support for bulk orders?
We provide professional technical guidance. Contact our support team once you meet product‑related issues after receiving goods.
After‑Sales Guarantee
- Sample verification is encouraged to confirm fit for your devices before mass procurement
- All goods are packed with industrial cartons complying with international air and sea transport rules
- Our support team offers fast reply for product parameter and application consultation
- For quality‑related defects from production, valid after‑sales solution will be arranged under proper usage condition
- Custom projects get dedicated follow‑up during the whole production cycle
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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
Lynn