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3.7V 220mAh Lithium Polymer Battery HZ751818 for Wearable & Small Electronics

Name: 3.7V 220mAh Lithium Polymer Battery HZ751818 for Wearable & Small Electronics
Brand: Shenzhen Vats Power Source Limited
SKU: 751818
Price: 0.98 USD
Availability: InStock

Brand Name:	Vats Battery
Model Number:	751818
MOQ:	3 pcs
Price:	$0.98~1.45
Delivery Time:	7 work days
Payment Terms:	T/T

Detail Information

Product Description

Ratings & Reviews

Detail Information

Place of Origin:

Guangdong, China

Certification:

Model:

HZ751818

Battery Type:

Lithium Polymer Battery

Dimension:

7.5mm *18mm *18mm

Nominal Capacity:

220mAh

Nominal Voltage:

3.7V

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:

3.7V 220mAh lithium polymer battery

HZ751818 wearable device battery

small electronics lithium polymer battery

Product Description

3.7V 220mAh Lithium Polymer Battery HZ751818 for Wearable & Small Electronics

This reliable lithium polymer battery delivers steady 3.7V power for compact small-size electronics. It serves as a practical power solution for wearable devices, replacing aging power cells and reducing device shutdown risk for your portable gadgets.

Specifications

Item	Details
Model	HZ751818
Battery Type	Lithium polymer battery
Dimension	7.5mm × 18mm × 18mm (Thickness × Width × Length)
Nominal Capacity	220mAh, custom size/capacity/voltage available
Nominal Voltage	3.7V
Max Cut-off Voltage	4.2V
Discharge Current	Standard: 0.2C-0.5C; Max: 1C
Connector	JST / Molex, customizable
Certifications	UL, UN38.3, MSDS, ROHS, ISO9001, CB, KC, PSE, IEC62133
Cycle Life	500 charge-discharge cycles

Key Advantages

Customizable Size & Connector Options: Adjust capacity, voltage and connector types to match your device housing without extra modification work
Complete Global Safety Certifications: Comprehensive UL, UN38.3 and MSDS approvals support smooth air and sea shipping
Stable Cycle Performance: Supports up to 500 cycles, maintaining consistent output and lowering long-term replacement costs
Available Sample Testing: Sample units supported for pre-order verification and performance validation
Flexible Lead Time: Stock items ship in 3-7 days; custom production finishes in 2-3 weeks

Applications

Ideal for a wide range of compact consumer gadgets in daily scenarios:

Home Daily Use: Smart bracelets, dental rinsers, blackhead removal devices, remote controls, smart home small appliances
Travel & Commuting: GPS navigators, car recorders, digital cameras for short trips
Personal Care & Portable Gear: Massagers, sprayers and other wearable small devices

This 3.7V wearable device battery fits most compact portable consumer electronics with matching dimension requirements.

Frequently Asked Questions

Can this lithium polymer battery work for my custom wearable project?

Yes. We offer custom voltage, capacity and connector solutions for wearable electronics projects. Confirm your dimension limits before ordering.

What is the typical cycle life for this lithium ion battery cell?

Rated for 500 standard charge-discharge cycles under proper operating conditions.

Do you support sample orders for this 3.7V wearable device battery?

Samples are available for performance testing. Please contact us for sample lead time and pricing.

What shipping standards do these batteries follow?

Packed with industrial cartons meeting international air and sea shipping standards, supported by UN38.3 and MSDS documents.

Can I change the connector type?

JST and Molex connectors are optional. Notify us your connector requirement when placing orders.

What is the production lead-time?

In-stock goods ship within 3-7 days. Custom production orders take 2-3 weeks.

Are these cells compliant for North America and EU market sales?

They hold UL, ROHS, IEC62133 and related certificates, meeting mainstream market access requirements.

After-Sales Guarantee

All our lithium polymer battery units are manufactured in-house. We provide standard product quality guarantee for manufacturing defects. If you receive defective items, please share test evidence for support. We supply complete certification documents for your customs clearance. Our sales team offers timely technical support for your integration questions. Stock items can be dispatched quickly to shorten your waiting time.

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!

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.

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products details

3.7V 220mAh Lithium Polymer Battery HZ751818 for Wearable & Small Electronics

3.7V 220mAh lithium polymer battery

HZ751818 wearable device battery

small electronics lithium polymer battery

Overall Rating

Rating Snapshot

All Reviews

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