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303030 250mAh 3.7V Lipo Polymer Rechargeable Lithium Battery For Wearable & Small Electronics

Name: 303030 250mAh 3.7V Lipo Polymer Rechargeable Lithium Battery For Wearable & Small Electronics
Brand: Shenzhen Vats Power Source Limited
SKU: 303030
Price: 0.98 USD
Availability: InStock

Brand Name:	Vats Battery
Model Number:	303030
MOQ:	3 pcs
Price:	$0.98~2
Delivery Time:	7 work days
Payment Terms:	T/T

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

Guangdong, China

Certification:

Max Discharge Current:

Nominal Voltage:

3.7V

Standard Discharge Current:

0.2C-0.5C

Dimension:

3.0±0.2*30±0.5*30±2.5mm

Nominal Capacity:

250mAh

Max Cut-off 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:

250mAh Lipo polymer rechargeable battery

3.7V lithium battery for wearable electronics

small electronics lithium polymer battery

Product Description

303030 250mAh 3.7V Lipo Polymer Rechargeable Lithium Battery For Wearable & Small Electronics

303030 250mAh 3.7V Lipo Polymer Rechargeable Lithium Battery for Wearable & Small Electronics

Specifications

Item	Details
Model	303030
Cell Type	Lithium polymer battery
Nominal Capacity	250mAh (Custom size/capacity/voltage available)
Nominal Voltage	3.7V
Max Cutoff Voltage	4.2V
Discharge Current	0.2C–0.5C (Std), Max 1C
Dimensions	3.0±0.230±0.530±2.5mm (ThickWidthLength)
Cycle Life	500 charge cycles
Connector	JST / Molex, customizable
Certifications	UL, KC, IEC62133, CE, ROHS, UN38.3, MSDS
Packaging	Industrial carton, compliant with air & sea shipment standards

Product Overview

This 3.7V wearable device battery is a reliable lithium polymer battery built for compact consumer gadgets. It delivers steady 250mAh power, passes global safety certifications, and supports custom connectors to fit your small electronic projects perfectly.

Key Advantages

Stable & Safe Power Output: Built as a quality lithium ion battery cell, it holds consistent voltage during discharge and carries full global safety certifications to lower device risk for your end users.
Customizable Form & Connector: Adjustable size, capacity, voltage plus optional JST/Molex connectors. Match this 3.7V wearable device battery directly to your product design without extra modification work.
Long Service Cycle: Supports up to 500 charge cycles, extending the usable lifespan of your compact electronics and reducing replacement frequency for your customers.
Shorter Lead Time: Stock items ship in 3–7 days; custom orders finish within 2–3 weeks, helping you keep inventory schedules on track.
Sample Testing Supported: You can order samples for pre-production verification before bulk purchase to confirm performance matches your device requirements.

Applications

Fit this lithium polymer battery for a wide range of compact electronics: car recorders, GPS navigators, smart home gadgets, massagers, digital cameras, sprayers, dental rinsers, smart bracelets, blackhead cleaners, remote controls and other small wearable consumer devices for daily home use, travel and commuting.

Frequently Asked Questions

Is this 3.7V wearable device battery rechargeable?

Yes, this lithium polymer battery is rechargeable, with a 4.2V max charging cutoff voltage.

Can I get a custom lithium ion battery cell with different capacity?

Sure, we support custom size, voltage and capacity to match your device design.

What is the typical cycle lifespan?

The battery supports around 500 charge and discharge cycles under standard usage.

What connectors are available for this 250mAh lipo battery?

JST and Molex connectors are available; we can adjust terminals per your request.

Do you offer sample testing before bulk order?

Yes, sample testing is supported for performance validation.

What safety certificates does this lipo battery hold?

It comes with UL, KC, IEC62133, CE, ROHS, UN38.3 and MSDS for global shipping compliance.

How long is the production lead time?

In-stock goods ship within 3–7 days; custom orders take 2–3 weeks after confirmation.

After-sales Guarantee

All lithium polymer battery units follow strict factory inspection before shipment. We provide compliant packaging that meets international air and sea transport rules. Our professional support team assists with technical checks and order queries. Reach out promptly if you meet product quality issues within valid usage conditions for proper 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

3 stars

2 stars

1 stars

All Reviews

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!

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:

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Li Ion Battery Pack

LiFePO4 Battery Pack

High Temperature Lipo Battery

Custom Lipo Battery

products details

303030 250mAh 3.7V Lipo Polymer Rechargeable Lithium Battery For Wearable & Small Electronics

250mAh Lipo polymer rechargeable battery

3.7V lithium battery for wearable electronics

small electronics lithium polymer battery

Overall Rating

Rating Snapshot

All Reviews

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