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Lithium Polymer Battery
Created with Pixso. HZ350926 3.7V 55mAh Rechargeable Li Polymer Battery For Wearable Devices

HZ350926 3.7V 55mAh Rechargeable Li Polymer Battery For Wearable Devices

Brand Name: VATS Battery or Neutral
Model Number: 350926
MOQ: 10
Price: $0.98-1.35
Delivery Time: 7 work days
Payment Terms: T/T
Detail Information
Place of Origin:
Guangdong, China
Certification:
UL1642//UL2054/CB/KC/PSE/CE/ROHS/UN38.3/MSDS
Capacity:
55mAh
Discharge Rate:
0.5C
Max Charge Voltage:
4.2V
Battery Size:
3.5±0.2 * 9±0.5 * 26±2.5 mm
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 rechargeable Li polymer battery

,

55mAh wearable device battery

,

Li polymer battery for wearables

Product Description
HZ350926 3.7V 55mAh Rechargeable Li Polymer Battery For Wearable Devices
Product Specifications
Item Details
Model HZ350926
Cell Type Lithium polymer battery
Dimension 3.5±0.2 * 9±0.5 * 26±2.5 mm (Thickness*Width*Length)
Nominal Capacity 55mAh, custom size/capacity/voltage available
Nominal Voltage 3.7V
Max Cut-off Voltage 4.2V
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
Lead Time 2-3 weeks for mass order; 3-7 days for in-stock items
Product Images
HZ350926 Li Polymer Battery - Front View HZ350926 Li Polymer Battery - Side View HZ350926 Li Polymer Battery - Connector Detail HZ350926 Li Polymer Battery - Size Comparison
Product Overview

This compact li polymer battery delivers stable 3.7V power for small wearable electronics. This 3.7V wearable device battery fits space-tight gadgets, reduces frequent recharging and supports custom connector options for your project. It is a reliable lithium ion battery cell for compact consumer smart hardware.

Key Features
  • Compact Size for Tight Device Housing: Small footprint matches limited internal space of miniature electronics. You can build slim wearable gadgets without sacrificing battery performance.
  • Stable & Consistent Power Output: Steady discharge performance under standard load. Your wearable and portable devices run smoothly without unexpected power drops.
  • Long Working Cycle Life: Up to 500 cycles for repeated charging. Lower your long-term replacement cost for mass-produced end products.
  • Flexible Customization Support: Adjust capacity, voltage and connector types per your drawing. Get a tailored lithium ion battery cell for your unique product design.
  • Sample Testing Available: Order samples for lab validation before bulk purchase. Confirm real-world performance of this 3.7V wearable device battery before full investment.
  • Qualified Factory Supply: Direct manufacturer supply with international shipping-compliant carton packing. Stable stock and production schedule for your ongoing orders.
Applications

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

Compatible end devices include car recorders, GPS navigators, smart home appliances, massagers, consumer electronics, digital cameras, sprayers, dental rinsers, smart bracelets, blackhead removal devices, 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 and other compact smart products.

Frequently Asked Questions
Q1: Can this 3.7V wearable device battery work for my custom wearable prototype?
A: Yes. This li polymer battery supports connector modification. Send your device dimension requirement to check compatibility for your prototype project.
Q2: What is its typical cycle lifespan?
A: The lithium ion battery cell supports up to 500 charge-discharge cycles under proper charge-discharge operation.
Q3: Do you offer sample units for performance testing?
A: Samples are available. Sample lead time is 3-7 days for existing stock.
Q4: What is the production lead-time for bulk orders?
A: Mass production takes 2-3 weeks. Stock items ship within 3-7 working days.
Q5: Can I modify capacity, voltage or dimension?
A: Custom size, capacity and voltage are supported. Share your specification sheet for quotation.
Q6: What shipping standard does the battery packing follow?
A: Industrial carton packaging meets international air and sea shipping requirements for lithium batteries.
Q7: What connector choices do I get?
A: JST and Molex connectors are available. We can assemble other connectors based on your demand.
Q8: Is this battery suitable for small-volume DIY projects?
A: Yes. Both small-batch and bulk orders are accepted for this 3.7V wearable device battery.
After-sales Guarantee

We provide factory-direct support for this li polymer battery.

  • All units go through basic performance inspection before shipment.
  • Production defect support: Contact our support team once defective items are received. Provide order number and test records for assessment.
  • Custom orders follow confirmed technical specification. Any modification needs advance written confirmation.
  • Our professional sales team offers technical guidance for lithium ion battery cell integration questions.
  • Packaging complies with global lithium battery transport standards for smooth international delivery.
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
0%
3 stars
0%
2 stars
0%
1 stars
0%

All Reviews

M
Markus K.
Germany May 15.2026
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!
O
Owen
Canada Apr 7.2026
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.
H
Harry
United Kingdom Mar 18.2026
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!