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Lithium Polymer Battery

Lithium Polymer Battery Pack

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Created with Pixso. Home Created with Pixso. Products Created with Pixso.
Lithium Polymer Battery
Created with Pixso. 602030 300mAh 3.7V Li Polymer Battery for Small Wearable & Smart Devices
602030 300mAh 3.7V Li Polymer Battery for Small Wearable & Smart Devices
  • Name
  • Name
  • Name

602030 300mAh 3.7V Li Polymer Battery for Small Wearable & Smart Devices

Brand Name: Vats Battery
Model Number: 602030
MOQ: 3 pcs
Price: $0.98~1.48
Delivery Time: 7 work days
Payment Terms: T/T
Detail Information
Product Description
Ratings & Reviews
Detail Information
Place of Origin:
Guangdong, China
Certification:
CE
Nominal Voltage:
3.7V
Dimension:
6±0.2*20±0.5*30±2.5 Mm
Nominal Capacity:
300mAh
Max Cut-off Voltage:
4.2V
Standard Discharge Current:
0.2C-0.5C
Max Discharge Current:
1C
Packaging Details:
Industrial cartons compliant with air & sea shipping standards
Supply Ability:
Ships in 7 Business Days (In-Stock) / 30 Business Days (Out-of-Stock)
Highlight:

300mAh Li polymer battery for wearables

,

3.7V lithium polymer battery small devices

,

Li polymer battery with 300mAh capacity

Product Description
602030 300mAh 3.7V Li Polymer Battery for Small Wearable & Smart Devices
This reliable li polymer battery delivers steady power for compact electronics. As a practical 3.7v wearable device battery, it fits small-size smart gadgets with stable output and long cycle life. This lithium ion battery cell supports custom connectors to match your device needs.
Specifications
Item Details
Model HZ602030
Cell Type Lithium polymer battery
Dimension 6±0.2*20±0.5*30±2.5 mm (Thickness*Width*Length)
Nominal Capacity 300mAh, custom size/capacity/voltage available
Nominal Voltage 3.7V
Max Cut-off Voltage 4.2V
Standard Discharge Current 0.2C-0.5C
Max Discharge Current 1C
Cycle Life Up to 500 charge-discharge cycles
Connector JST / Molex, customizable
Key Features
  • Stable Consistent Output: Balanced discharge performance avoids sudden power drops. Your small devices run smoothly without unexpected shutdown.
  • Extended Cycle Lifespan: Up to 500 charge cycles maintain usable capacity. You replace batteries less frequently and lower long-term running cost.
  • Flexible Custom Options: Adjustable connectors, sizes and capacity. This 3.7v wearable device battery can match your unique hardware project requirements.
  • Safe Industrial-Grade Packing: Shipping packaging meets global air and sea transport standards. Your li polymer battery arrives undamaged for immediate use.
  • Sample Support Available: Test units are offered before bulk order. You can verify real-world performance for your project ahead of full purchase.
Applications
Fit for multiple compact consumer electronics for home use, daily commute and travel scenarios. Works for car dash cameras, GPS navigators, smart home small appliances, massage gadgets, digital cameras, oral irrigators, smart bracelets, remote controls and other compact smart products. This lithium ion battery cell suits many low-power portable wearable devices.
Frequently Asked Questions
What devices fit this 3.7v wearable device battery?
It works for small portable electronics requiring 3.7V input, such as smart bracelets, mini recorders and compact home smart gadgets. Please double-check your device dimension limits before ordering.
Can I get samples of this li polymer battery?
Yes, sample testing is supported for performance verification.
How long 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 type?
JST and Molex connectors are optional. We adjust terminals based on your request.
What is its cycle performance?
This lithium ion battery cell supports around 500 full charge-discharge cycles under standard use.
Does it support custom capacity or dimension?
Yes, custom size, capacity and voltage options are available for project needs.
What shipping standards are followed?
Units are packed in industrial cartons complying with international air and ocean shipping rules.
After-sales Guarantee
We provide reliable support for your li polymer battery orders. All units follow standard industrial production specifications. Reach our professional support team for compatibility and order questions. Custom project consultation is available. Please note physical damage from improper installation is not covered. For quality-related issues, contact us after receiving goods to start resolution.
Ratings & Review

Overall Rating

5.0
Based on 50 reviews for this supplier

Rating Snapshot

The following is the distribution of all ratings
5 stars
100%
4 stars
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

M
Markus K.
Germany May 15.2026
Helpful (45)
Ich war anfangs echt ein bisschen skeptisch, weil man im Netz ja viel zu hören bekommt, wenn es um Li-Polymer-Akkus geht. Aber der originale E66 Akku hier? Junge, Junge... das Teil ist ein Biest! Ich habe die Zelle jetzt seit ein paar Wochen in meinem DIY-Solar-Projekt verbaut und ausgiebig getestet. Was soll ich sagen: Die 66ah sind absolut real, kein Fake-Wert! Die Kapazität ist stabil, die Spannung von 3.7V bleibt auch unter Last super konstant und das Teil wird beim Laden kaum handwarm. Man merkt einfach sofort, dass die Verarbeitungsqualität stimmt und das PCB-Schutzboard ordentlich mitgedacht wurde. Für den Preis kriegt man hier in Deutschland aktuell kaum was Besseres. Versand war auch fix, Verpackung war bombensicher – so muss das laufen! Wer verlässliche Power sucht, kann hier echt bedenkenlos zugreifen. Von mir gibt's eine klare Kaufempfehlung und verdiente 5 Sterne. Daumen hoch!
R
Robert T.
United States May 13.2026
Helpful (99)
As a veteran engineer in portable audio and smart hardware R&D, I demand the absolute best in battery electrical performance. We sourced this 103048 3.7V 1500mAh Li-polymer battery for a BT speaker project, and its real-world performance has completely blown us away.
H
Harry
United Kingdom Mar 18.2026
Helpful (90)
I bought these 805050 3.7V 2500mAh lithium polymer batteries to replace the old cells in my Bluetooth speakers, and they work brilliantly. Fit is absolutely perfect, no trimming needed at all. The voltage and capacity are spot on, my speakers now hold charge for much longer than before. Power output is stable, sound quality isn’t affected one bit. They’re well-made and feel really durable. Delivery arrived quickly, items were well packed with no damage. Great value for money compared to local stores. I’ve been using them daily for weeks with zero issues. Would absolutely recommend these batteries to anyone needing replacements for wireless speakers. I’ll be coming back to buy more soon!
Tags: 

Lithium Ion Polymer Battery  

Rechargeable Li Polymer Battery  

Lipo Battery

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