Introduction
401015 Bluetooth Headphone Lithium Battery is a precision 4.0mm ultra-slim cell. It solves tight housing constraints in headsets while preventing capacity fraud and voltage drops through factory-graded Grade-A density.
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Item |
Specifications |
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Charge voltage |
4.2V |
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Nominal voltage |
3.7V |
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Nominal capacity |
50mAh 0.5C Discharge |
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AC Impedance |
≤ 600 mΩ |
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Charge current |
Standard Charging: 0.5C Rapid charge: 1.0C |
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Discharge current |
Standard discharging: 0.5C Rapid discharging: 1.0C |
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Standard Charging method |
0.5C CC(constant current)charge to4.2V,then CV(constant voltage 4.2V)charge till charge current decline to ≤0.02C |
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Charging Time |
Standard Charging: 3.5 hours |
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Standard discharge method |
1C CC(constant current)discharge to Min Discharge cut-off voltage(3.3) |
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Operating temperature |
Charging: 0℃~45℃ Discharging: -20℃~60℃ |
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Storage temperature |
-20℃~ +50℃ |
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Storage humidity |
45~65%RH |
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Free fall |
The battery to be fully charged with standard charging condition ,then fall from height of 1.0m and hit onto concrete ground 2 times |
Key Features
Tight Thickness Control
Thickness is controlled within ±0.1mm to ensure stable fit inside compact headset housings without pressure on the plastic structure.
High Density Cobalt Cell
High-purity cobalt chemistry is used to achieve stable 40–50mAh output within the 401015 footprint for consistent playback performance.
Ultrasonic Tab Welding
Nickel tabs are welded using ultrasonic process to improve mechanical strength and reduce failure during soldering on assembly lines.
Low Self Discharge
Cell chemistry is optimized to reduce voltage drop during storage, minimizing failure risk after long warehouse or shipping cycles.
Customization Options
Integrated PCM: Specialized protection boards to prevent over-charge, over-discharge, and short-circuits.
Lead Termination: Pre-installed JST, Molex, or ultra-fine enamel wires (30-32AWG) tailored to your PCBA layout.
High-Rate Versions: Specialized cells available for devices with high peak-current demands or ANC (Active Noise Cancellation) features.
Branding & Traceability: Custom laser etching of batch codes, production dates, and QR codes for quality tracking.
Application
Bluetooth Audio: Neckband headphones, mono headsets, and sport earhooks.
Smart Wearables: Slim fitness trackers, smart rings, and smart eyewear.
Medical Devices: Digital thermometers, hearing aids, and wearable sensors.
Micro-Digital: Smart styluses, fingerprint padlocks, and Bluetooth remote shutters.
FAQ
Q: What is the MOQ?
A: MOQ depends on customization level, with flexible trial orders available for standard specifications.
Q: Can samples be provided?
A: Yes, samples are available for evaluation with a typical lead time of 3–10 days.
Q: Do you support OEM/ODM customization?
A: Yes, customization is available for size, capacity, connectors, and packaging.
Q: How do you ensure consistency in mass production?
A: Through capacity grading, internal resistance sorting, and 100% batch inspection.
Q: Do you support global logistics and certifications?
A: All shipments are accompanied by updated UN38.3 and MSDS documentation. We use compliant UN-standard packaging for safe and smooth air or sea freight clearance.
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