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401214 50mAh 3.7V Rechargeable Li Polymer Battery For Wearable Devices

Name: 401214 50mAh 3.7V Rechargeable Li Polymer Battery For Wearable Devices
Brand: Shenzhen Vats Power Source Limited
SKU: 401214
Price: 0.98 USD
Availability: InStock

Brand Name:	VATS Battery or Neutral
Model Number:	401214
MOQ:	10
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:

UL1642//UL2054/CB/KC/PSE/CE/ROHS/UN38.3/MSDS

Voltage:

3.7V

Capacity:

50mAh

Battery Size:

4.0±0.2*12±0.2*14±2.5 Mm

Cycle Life:

500 Charge Cycles

Discharge Rate:

0.5C

Max Charge Voltage:

4.2V

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:

50mAh rechargeable Li polymer battery

3.7V wearable device battery

Lithium polymer battery with warranty

Product Description

401214 50mAh 3.7V Rechargeable Li Polymer Battery For Wearable Devices

Product Specifications

Item	Details
Model	401214
Cell Type	Lithium polymer battery
Dimension	4.0±0.212±0.214±2.5 mm (ThicknessWidthLength)
Nominal Capacity	50mAh (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
Connector	JST / Molex, customizable
Cycle Life	Up to 500 charge-discharge cycles
Packaging	Industrial carton for air & sea shipment

Product Overview

This reliable li polymer battery delivers stable power for compact small electronics. As a practical 3.7V wearable device battery, it fits space-tight gadgets, reduces frequent replacement and keeps your compact devices running steadily. It is a trustworthy lithium ion battery cell option for prototype and mass production projects.

Key Advantages

Customizable Size & Specs: Adjust capacity, voltage and physical dimension for your unique device project. You get battery units perfectly matched to your product housing.
Stable & Consistent Power Output: Controlled discharge performance keeps your small electronics working smoothly and avoids sudden power drops.
Long Service Cycle Life: Supports up to 500 charge cycles, reducing long-term replacement frequency and after-sales costs.
Flexible Connector Options: Select JST or Molex connector per your circuit design for direct plug-and-use assembly.
Sample Support Available: Test samples offered before bulk order to verify performance in your prototype.
Reliable Factory Supply: Direct source from professional battery manufacturer with stable lead times for all order volumes.

Applications

This compact li polymer battery fits wide ranges of consumer and smart electronics for home use, daily commuting and outdoor scenarios.

Car Dash Cameras GPS Navigators Smart Home Appliances Massage Tools Digital Cameras Spray Devices Dental Irrigators Smart Bracelets Blackhead Remover Tools Remote Controllers 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

Frequently Asked Questions

Can this lithium ion battery cell work for my custom wearable gadget?

This 3.7V wearable device battery suits most compact electronics. Send your dimension and power requirement, we check compatibility or offer customized li polymer battery solution.

What is your typical production lead time?

Custom order takes 2-3 weeks. In-stock items ship within 3-7 working days.

Can I get samples for testing purpose?

Yes, sample testing is supported for evaluation before bulk purchase.

What is the maximum discharge rate of this cell?

Standard discharge sits at 0.2C-0.5C, maximum discharge current reaches 1C for short-term load.

Do you support custom connector and cable length?

Yes. JST and Molex connectors are selectable. We adjust wiring to match your hardware requirement.

What packaging do you use for international shipment?

We adopt industrial carton packaging complying with international air freight and ocean shipping standards.

Is it possible to adjust capacity and voltage for special projects?

Yes, custom size, nominal capacity and voltage can be arranged upon request.

How many charge cycles can this li polymer battery endure?

It can reach around 500 full charge-discharge cycles under proper operating conditions.

After-sales Guarantee

All li polymer battery units go through basic quality inspection before dispatch. We provide professional technical support for your product integration questions. Reach our support team for any quality-related issues within valid warranty period. Our packing follows global shipping rules to secure goods during transit. We support sample pre-validation to reduce risk for your project. Should you meet product quality defects, please provide test evidence for our assessment and proper solution.

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

3 stars

2 stars

1 stars

All Reviews

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.

Owen

Canada Apr 7.2026

Helpful (86)

I’ve been using this 357090 3.7V 2500mAh lipo battery for a few weeks now, and I’m really satisfied with it. It is steady-quality rechargeable lithium polymer batteries that perfectly match the rated voltage and capacity. Output efficiency is great, which helps me save a lot of working time. Build quality feels solid too, no weird noises or faults during daily operation. Shipping was fast and the packaging was protective. For small-scale battery production and copying work, this is absolutely a practical and cost-effective pick. I’d definitely recommend it to fellow business partners and will consider reordering in the future.

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 Polymer Battery

Lithium Polymer Battery Pack

High Discharge Lipo Battery

Ultra Thin Lipo Battery

Round Lipo Battery

Curved Lipo Battery

Li Ion Battery Pack

LiFePO4 Battery Pack

High Temperature Lipo Battery

Custom Lipo Battery

Lithium Polymer Battery

Lithium Polymer Battery Pack

High Discharge Lipo Battery

Ultra Thin Lipo Battery

Round Lipo Battery

Curved Lipo Battery

Li Ion Battery Pack

LiFePO4 Battery Pack

High Temperature Lipo Battery

Custom Lipo Battery

products details

401214 50mAh 3.7V Rechargeable Li Polymer Battery For Wearable Devices

50mAh rechargeable Li polymer battery

3.7V wearable device battery

Lithium polymer battery with warranty

Overall Rating

Rating Snapshot

All Reviews

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