302030 3.7V 140mAh Li Polymer Battery Custom Lithium Ion Battery Cell
Product Overview
This compact li polymer battery delivers steady 3.7V power for small electronics. It is a practical 3.7V wearable device battery with stable output, ideal for compact smart gadgets. We support sample testing and custom lithium ion battery cell configurations to match your project needs.
Technical Specifications
| Item |
Details |
| Model |
302030 |
| Cell Type |
Lithium polymer battery |
| Dimension |
3.0±0.2*20±0.5*30±2.5mm (Thickness*Width*Length) |
| Nominal Capacity |
140mAh (120mAh optional; custom size/capacity/voltage available) |
| Nominal Voltage |
3.7V |
| Max Cutoff Voltage |
4.35V |
| Standard Discharge Current |
0.2C–0.5C |
| Max Discharge Current |
1C |
| Connector |
JST / Molex, customizable |
| Cycle Life |
500 charge-discharge cycles |
| Packaging |
Industrial carton, compliant with air & sea shipping standards |
Key Advantages
Stable Power Output for Mini Electronics
Controlled 0.2C–0.5C standard discharge, peak 1C protects your device mainboard and maintains consistent operation.
Long Service Life to Lower Replacement Cost
Rated for 500 cycles to reduce recurring component costs for your finished products.
Custom Connector & Specs
JST/Molex optional, plus custom size, capacity and voltage for smooth hardware integration.
Factory Supply With Sample Support
Direct manufacturer supply with sample testing available to validate performance before mass production.
Compliant Shipping Packaging
Carton packaging follows international air and ocean standards to reduce customs hold-up risk.
Applications
This 3.7V wearable device battery fits many compact consumer and smart electronics for home, commute and outdoor use:
Car Recorders
GPS Navigators
Smart Home Appliances
Massagers
Digital Cameras
Sprayers
Dental Rinsers
Smart Bracelets
Blackhead Removers
Remote Controls
Smart Watches
Electronic Toy Guns
Electric Air Pumps
Smart Trash Cans
Bluetooth Speakers
Fingerprint Locks
Electric Hair Clippers
Dog Trainers
Pest Repellents
Camping Lights
Robot Vacuums
Electric Toothbrushes
Pet Water Fountains
Electric Shavers
Mini Handheld Fans
Frequently Asked Questions
Is this li polymer battery compatible with my small wearable device?
It is a 3.7V wearable device battery made for low-current compact electronics. Confirm your device voltage, size and connector pinout before ordering. We also provide custom lithium ion battery cell if standard 302030 does not fit.
Can I order samples for testing?
Yes, sample testing is supported so you can verify performance before bulk purchase.
What is the production lead time?
Stock items ship within 3–7 days. Custom orders take 2–3 weeks after confirmation.
Can I change the connector or adjust capacity?
Yes. We offer JST/Molex connector selection and custom size, capacity and voltage for your project.
How many cycles can this battery last?
It supports up to 500 charge and discharge cycles under proper use.
Does the packaging pass air and sea lithium transport rules?
Yes. Our industrial carton packing meets international air and shipping standards for lithium cells.
What is the maximum discharge current of this lithium ion battery cell?
The maximum discharge current is 1C, standard discharge range is 0.2C–0.5C.
Are you the direct manufacturer?
Yes. VATS BATTERY is a professional lithium battery manufacturer based in China for stable factory direct supply.
After-sales Guarantee
We stand behind our li polymer battery for small electronics. All cells go through basic quality checks before packing. Reach out to our technical support team quickly if you meet product matching or performance issues. We maintain clear communication for custom spec adjustment, sample arrangement and bulk order scheduling. Our packaging follows international lithium shipping rules to help your cargo clear customs smoothly. We offer responsive support to resolve compatibility questions for your 3.7V wearable device battery and custom lithium ion battery cell requests.
