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552035 3.7V 350mAh Li Polymer Battery with Seiko PCB, Rechargeable Lithium Ion Cell

Name: 552035 3.7V 350mAh Li Polymer Battery with Seiko PCB, Rechargeable Lithium Ion Cell
Brand: Shenzhen Vats Power Source Limited
SKU: 552035
Price: 0.95 USD
Availability: InStock

Brand Name:	VATS Battery or Neutral
Model Number:	552035
MOQ:	10
Price:	$0.95-1.35
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

Battery Size:

5.5±0.2*20±0.5*35±2.5mm

Discharge Rate:

0.5C

Capacity:

350mAh

Max Charge Voltage:

4.2V

Voltage:

3.7V

Cycle Life:

500 Charge Cycles

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 350mAh Li Polymer Battery

Rechargeable Lithium Ion Cell with Seiko PCB

Lithium Polymer Battery with warranty

Product Description

552035 3.7V 350mAh Li Polymer Battery with Seiko PCB, Rechargeable Lithium Ion Cell

This high-performance lithium polymer battery delivers reliable 3.7V power for compact electronic devices. Built with Seiko PCB protection, this 350mAh lithium ion cell ensures safe operation and extended service life.

Specifications

Parameter	Value
Model	HZ552035
Cell Type	Lithium polymer battery
Dimension	5.5±0.2 * 20±0.5 * 35±2.5mm (Thickness * Width * Length)
Nominal Capacity	350mAh, custom size / capacity / voltage available
Nominal Voltage	3.7V
Max Cutoff Voltage	4.2V
Standard Discharge Current	0.2C-0.5C
Max Continuous Discharge	1C
Connector Option	JST / Molex, configurable on request
Cycle Life	500 cycles
Manufacturer	Shenzhen VATS Power Source Limited
Lead Time	2-3 weeks for new orders; 3-7 days for in-stock units

Key Features

Seiko PCB Built-In Protection: Standard protection circuit prevents overcharge, over-discharge and short circuits for enhanced device safety
Stable 500-Cycle Service Life: Consistent capacity retention over repeated cycles for longer usable time
Flexible Connector & Custom Options: Choose JST or Molex connectors, with customizable size, capacity and voltage
Factory Direct Supply: Direct manufacturer support with sample testing available
Global Shipping Compliance: Industrial carton packaging meets international transport standards

Applications

This lithium polymer battery is ideal for compact portable electronics including: dash cameras, GPS navigators, smart home appliances, massagers, digital cameras, sprayers, dental rinsers, smart bracelets, blackhead removers, remote controls, smart watches, electronic toy guns, electric air pumps, smart trash cans, Bluetooth speakers, fingerprint locks, electric hair clippers, dog trainers, pest repellers, camping lamps, robot vacuums, electric toothbrushes, pet water fountains, electric shavers, handheld mini fans and other smart consumer electronics.

Frequently Asked Questions

Is this 3.7V wearable device battery rechargeable?

Yes, this li polymer battery is rechargeable, with 4.2V maximum charging cutoff voltage.

Can I request samples for testing?

Yes, sample testing is supported to verify compatibility and performance for your project.

Can I customize the connector, size or capacity?

Custom size, capacity and voltage are available. JST or Molex connectors can be selected per your requirement.

What is the typical production lead time?

2 to 3 weeks for custom orders; 3-7 days if the lithium ion cell is in stock.

Does the built-in Seiko PCB offer safety protection?

Yes, the integrated Seiko PCB protects the cell from overcharge, over-discharge and short-circuit.

What cycle life can I expect?

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

What shipping standards does the packaging follow?

Industrial carton packaging complies with international air and ocean shipping regulations for lithium batteries.

Who makes this battery?

Shenzhen VATS Power Source Limited, a direct manufacturer of li polymer battery products.

After-sales Guarantee

We provide consistent quality support for your bulk orders. All units undergo factory inspection before shipment. If quality issues arise under normal use, we support proper after-sales communication and solutions. Our professional sales team responds promptly to technical or order questions, and we follow global battery shipping regulations to ensure smooth logistics. Sample testing is available before large batch production to minimize project risk.

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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High Discharge Lipo Battery

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LiFePO4 Battery Pack

High Temperature Lipo Battery

Custom Lipo Battery

products details

552035 3.7V 350mAh Li Polymer Battery with Seiko PCB, Rechargeable Lithium Ion Cell

3.7V 350mAh Li Polymer Battery

Rechargeable Lithium Ion Cell with Seiko PCB

Lithium Polymer Battery with warranty

Overall Rating

Rating Snapshot

All Reviews

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