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3.7V 75mAh Li‑Polymer Rechargeable Battery 351125 For LED & Wearable Devices

Name: 3.7V 75mAh Li‑Polymer Rechargeable Battery 351125 For LED & Wearable Devices
Brand: Shenzhen Vats Power Source Limited
SKU: 351125
Price: 0.65 USD
Availability: InStock

Brand Name:	VATS Battery or Neutral
Model Number:	351125
MOQ:	10
Price:	US$0.65-1.03
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

Nominal Voltage:

3.7V

Nominal Capacity:

75mAh

Max Cut-off Voltage:

4.35V

Max Discharge Current:

Standard Discharge Current:

0.2C-0.5C

Dimension:

3.5±0.2*11±0.5*25±2.5 mm

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:

3.7V Li-Polymer rechargeable battery

75mAh battery for LED devices

351125 wearable device battery

Product Description

3.7V 75mAh Li-Polymer Rechargeable Battery 351125 For LED & Wearable Devices

Product Overview

This reliable lithium polymer battery delivers stable 3.7V 75mAh power for compact electronics. As a practical 3.7V wearable device battery, it fits small-size gadgets and supports custom modification to match your project requirements. It reduces power-failure risk for your portable devices.

Technical Specifications

Item	Details
Model	HZ351125
Battery Type	Lithium polymer battery
Dimension	3.5±0.2 × 11±0.5 × 25±2.5 mm (Thickness × Width × Length)
Nominal Capacity	75mAh, custom size / capacity / voltage supported
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 upon request
Cycle Life	Up to 500 charge-discharge cycles
Production Lead Time	2-3 weeks for mass order; 3-7 days for in-stock items

Key Features

Customizable Size & Specs: We adjust dimension, capacity and voltage for your projects. You get a lithium ion battery cell tailored exactly for your compact device.
Stable & Safe Output: Rated 0.2C-0.5C standard discharge with 1C peak current. Consistent power output protects your circuit boards and extends product service life.
Flexible Connector Options: Select JST or Molex connector per your assembly needs, saving assembly labor and production time.
Long Cycle Performance: Up to 500 charge cycles, maintaining usable capacity after repeated charging.
Available Sample Testing: Order samples for pre-production verification before placing large bulk orders.
Standard Shipping-Ready Packaging: Units packed with industrial cartons meeting air and ocean shipping rules.

Applications

This compact lithium polymer battery fits a wide range of portable electronics for home use, outdoor camping, daily commuting and travel scenarios.

Car recorders & GPS navigators
Smart home appliances & massagers
Consumer electronics & 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 vacuums
Electric toothbrushes & pet water fountains
Electric shavers & mini handheld fans
Other smart compact gadgets

Frequently Asked Questions

Q1: Can I get sample of this li polymer battery for testing?

A: Yes, sample testing is supported. You may request samples to verify performance of this 3.7V wearable device battery before bulk purchase.

Q2: Can you make custom voltage or capacity for this lithium ion battery cell?

A: Custom size, capacity and voltage are available. Share your dimension and power requirement with our team for quotation.

Q3: What is your order lead-time?

A: Stock items ship within 3-7 days. Custom mass production takes 2-3 weeks after order confirmation.

Q4: What connectors are offered for this battery?

A: JST and Molex connectors are optional. We can follow your drawing to match your device port.

Q5: How many charge cycles can this li polymer battery support?

A: It reaches up to 500 charge-discharge cycles under standard usage conditions.

Q6: What kind of devices fit this 3.7V wearable device battery?

A: It suits small-size portable electronics including wearables, LED lights, handheld gadgets and compact smart home devices.

Q7: Do you support international air and sea shipment?

A: Yes, batteries are packed in industrial cartons complying with global air and ocean shipping standards.

Q8: Is this lithium ion battery cell safe for consumer finished goods?

A: Our units follow global battery manufacturing standards for consumer electronics, suitable for integration into end-user products.

After-sales Guarantee

We stand behind our lithium polymer battery for your business projects. All units go through internal quality inspection before shipment. If manufacturing defects occur under normal usage conditions, we provide corresponding after-sales support. Our sales team offers prompt professional support for pre-sales consultation and order follow-up. Sample verification is encouraged to confirm the 3.7V wearable device battery matches your hardware. We follow international shipping rules for battery cargo to keep your global supply chain stable. Reach out to our support team for any product-related questions.

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!

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