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Ufx351426 3.7V 140mAh Bluetooth Earphone Battery
True Wireless Earbuds

Ufx351426 3.7V 140mAh Bluetooth Earphone Battery

Model: UFX351426 Customization available Headphones & Earphones
US$5.005–4,999 Pieces
US$1.255,000–9,999 Pieces
US$1.2010,000+ Pieces
MOQ 5 Pieces
Type
Li-ion Battery
Cathode Material
NCM
Rechargeable
Yes
Size
Small
Cycle Life
500 Cycles
Weight
Typically 3.93G
Send Inquiry Full specifications

Specifications

Product nameUfx351426 3.7V 140mAh Bluetooth Earphone Battery
CategoryTrue Wireless Earbuds
CustomizationAvailable
TypeLi-ion Battery
Cathode MaterialNCM
Model NO.UFX351426
RechargeableYes
SizeSmall
Cycle Life500 Cycles
WeightTypically 3.93G
Capacity140mAh
Nominal Voltage3.7V
Charging Voltage4.2V
Charging Temperature0~45°C
Discharging Temperature-20~60°C
CertificationMSDS
Transport Package410*255*230mm
Specification3.5*14*28mm
OriginChina
HS Code8507600090
Production Capacity5000000pieces/Year
Package Size41.00cm * 25.50cm * 23.00cm
Package Gross Weight9.600kg
Lead Time10 days (1 - 10 Pieces) 25 days (11 - 5000 Pieces) 30 days (5001 - 10000 Pieces) To be negotiated ( > 10000 Pieces)
High Energy DensityMaximizes power in a compact size.
Long Life Cycle>500 cycles for enduring performance.
Enhanced SafetyJapanese dual IC protection (Anti-short circuit, over-charge, over-current, over-load).
Lightweight & ThinAluminum-plastic composite construction.
Easy AssemblyPre-installed Molex/Tyco connectors.
Fully CustomizableOEM & ODM services available.
Quality AssuredRigorously tested for reliability.
Competitively PricedOutstanding value without compromise.
PriceUS$5.00 5-4,999 Pieces US$1.25 5,000-9,999 Pieces US$1.20 10,000+ Pieces
SupplierGuangdong Ufine New Energy Co., Ltd
Data retrieved2026-10-23

Available options

Cathode MaterialNCM
SizeSmall
Capacity140mAh
Nominal Voltage3.7V
Charging Voltage4.2V
Fully CustomizableOEM & ODM services available.

Additional data

1. Mechanical Characteristics
Cell351423PCMYes
NTCNoWeightappr. 2.15g
Configuration1S1PDemension3.5*14*25mm(MAX)
2. Electrical Specification
Capacity140mAhNominal Voltage3.7V
Energy0.74WhInternal Impedanceless than 258 mΩ
Max. Charge Voltage4.2VDischarge Cut Off2.75V
Max. Charge Current140mAMax. Discharge Current140mA
Standard Charge Current70mAStandard Discharge Current70mA
Charge Temp. Range0℃ to 45℃Discharge Temp. Range-20℃ to 60℃
Storage Temp. Range1 year at -20℃ to +30℃Cycle life100 cycles ≥92%
3 months at -20℃ to +45℃300 cycles ≥88%
1 month at -20℃ to +60℃500 cycles ≥80%
3. Cell protection
Overcharge Detection4.3 ±25mV (1000 to 1600msec delay, release 4.2V ±50mV)Over discharge Detection2.8V ±50mV (115 to 175msec. delay, release 3.0V ±50mV)
Overcurrent Detection1A to3 A (9 to 15msec. delayShort protectionYes

Product description

The supplier lists this product as Li-ion Battery. The listed model is UFX351426. The specifications below reflect the information publicly displayed on the listing. Cathode Material: NCM. Model NO.: UFX351426.

Specifications, options and prices reproduce the supplier's published listing. Please confirm critical parameters with us before ordering.

FAQ

What is the minimum order quantity for Ufx351426 3.7V 140mAh Bluetooth Earphone Battery?

The listed minimum order quantity is 5 pieces. Tell us your quantity in the inquiry form and we will confirm it with the manufacturer.

How much does Ufx351426 3.7V 140mAh Bluetooth Earphone Battery cost?

The published price is US$1.20 – 5.00 per piece, with lower tier prices for larger quantities. Final pricing depends on quantity, options and destination.

Can it be customized with my logo, color or packaging?

Yes — the listing states that customization is available (Available). Describe your requirements in the inquiry.

Where do these specifications come from?

Specifications, options and prices reproduce the manufacturer's published listing on the date shown in the specification table. Please confirm critical parameters before ordering.

Send an inquiry

Ufx351426 3.7V 140mAh Bluetooth Earphone Battery
Ufx351426 3.7V 140mAh Bluetooth Earphone Battery
UFX351426 · US$1.20 – 5.00 · MOQ 5 Pieces
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