4.0mm Ultra-Thin & 3.5g Featherlight: Eliminates facial pressure and skin redness, delivering a true “zero-feel” wearing experience even for side sleepers.
Absolute Cold-Run Safety: Integrated micro-amp static sleep BMS ensures near-zero working temperature rise, removing overnight thermal anxiety.
IPX7 Waterproof & Zero-Starvation: Complete protection against night sweat corrosion, featuring a under 1.0uA ultra-low standby leakage current.
Zero-Pressure, Zero-Heat: The Invisible Power for Sleep Tech
At just 3.5g and 4.0mm thin, Himax’s medical-grade micro LiPo battery redefines ultra-light wearing comfort while guaranteeing absolute “cold-running” safety all night long.
✦ Technical Empathy: Resolving the Invisible Friction in Wearable Sleep Engineering
Designing premium sleep electronics like EEG headbands, forehead patches, or smart eye masks is an exercise in managing human vulnerability. When a user undergoes a 10-hour sleep apnea or polysomnography (PSG) test, traditional rigid, bulky batteries present immediate product failure points: painful skin indentations and an undercurrent of thermal anxiety. As battery engineers, we understand that “unnoticed wearing” is your core competitive edge. By leveraging our standard 401230-1S1P micro lithium polymer system, we compress the finished battery thickness to a mere 4.2mm and a total pack weight to just 3.5 grams. Encased in high-comfort materials, this flexible soft-pack system behaves less like hardware and more like a textile, moving organically with the user to prevent sleep disruption.
✦ Industrial Rigor: Tailored Calibration for Low-Power Wireless Architecture
Beyond ergonomics, a wearable device is only as reliable as its electrical ecosystem. This 3.7V 150mAh custom solution is precision-engineered to match the exact low-voltage curves of modern BLE 5.2/5.3 chips and high-frequency PPG pulse oximetry sensors. To squeeze maximum runtime out of every single milliampere-hour, we intentionally omitted heavy digital communication protocol chips. Instead, your main MCU can read the battery voltage directly via a high-precision ADC, utilizing Himax’s calibrated discharge curve data to achieve an ultra-accurate state-of-charge (SoC) display within a 2% tolerance. Every batch leaves our factory after undergoing a rigorous 10,000-cycle micro-rubbing fatigue test to simulate pillow friction, ensuring robust connection via the space-saving Molex 51021 2-Pin connector. Manufactured under strict ISO9001 quality frameworks, our design complies with CE-EMC, IEC 62133-2, RoHS 2.0, REACH, and ISO 10993 standards, while fully passing UN38.3 transport safety clearance to guarantee flawless international logistics and Amazon listing compliance.
Specifications
3.7V 150mAh 401230 Wearable LiPo Battery
Battery Chemistry
Lithium Polymer
Configuration
1S1P (Single Cell Operation
Nominal Voltage
3.7 V
Rated Capacity
150 mAh
Rated Energy
0.555 Wh
Maximum Charge Voltage
4.2 V
Discharge Cut-off Voltage
3.0 V
Standard Charge Current
30 mA (0.2C profile)
Maximum Continuous Discharge Current
75 mA (0.5C active sampling)
BMS Static Standby Current
<= 1.0 uA (Ultra-low micro-amp leakage control)
Finished Pack Dimensions
4.2mm * 12.5mm * 32.0mm (Thickness * Width * Length, Tolerance: plus or minus 0.2mm)
UL1571 ultra-flexible silicone wire, single strand, 30mm length
Enclosure Packaging Technology
Dual Mylar film layer + rubber end seal + Flame-retardant Matte Black PVC
Ingress Protection Rating
IPX7 Waterproof and sweatproof (1-meter deep immersion for 30 mins)
Manufacturing System & Compliance
Factory certified to ISO9001; Battery pack passes UN38.3 test, and fully compliant with IEC 62133-2, CE-EMC, RoHS 2.0, REACH, and ISO 10993 standards.
Frequently Asked Questions
Navigating the micro-battery landscape for medical-grade wearables involves strict compromises between energy density, hardware footprint, and biological safety. To assist your R&D and purchasing teams, we have compiled the five most critical technical queries addressed by our engineering department regarding this custom 3.7V sleep tech battery solution.
How does Himax prevent the micro battery from "starving" to death during long retail storage or distributor idle phases?
Micro batteries with low capacities are highly vulnerable to self-discharge. Our proprietary 1S custom BMS integrates an ultra-low leakage hardware IC that restricts the static standby current to under 1.0uA. This advanced power management extends the calendar life to over 3 years, successfully preventing the cell from dropping below the critical 3.0V over-discharge threshold even during prolonged shelf storage.
Can the battery surface withstand acidic night sweat and regular surface disinfection without structural degradation?
Yes. The battery features an advanced three-tier hermetic enclosure: inner dual-layer thermal Mylar insulation, rigid rubber end-seals, and an outer medical-grade, flame-retardant PVC heat-shrink wrap. The entire assembly meets IPX7 waterproof standards (tested via 1-meter water immersion for 30 minutes), blocking overnight moisture and sweat from corroding contact points while allowing safe cleaning wipes.
Since there is no digital communication protocol chip, how do we guarantee reliable fuel gauging for users?
To eliminate the 3-5% capacity overhead consumed by digital protocol chips, we utilize a streamlined ADC direct-voltage sampling methodology. Himax provides a highly precise standard discharge curve tailored to wearable low-current states (0.2C to 0.5C discharge profiles). By mapping your MCU’s high-precision ADC readings against our data, you can build a reliable fuel gauge with a tolerance of under 2%.
What physical stress verification does this soft-pack battery undergo to simulate real-world sleeping movements?
Sleep trackers undergo continuous physical shifting as users roll over. Our quality control lab subjects 100% of the product design to a 10,000-cycle micro-rubbing and bending fatigue simulation test, closely replicating the prolonged physical distortion caused by head-to-pillow movements. Post-test analysis ensures zero hairline cracks on internal solder pads and absolute structural integrity of the outer PVC shell.
Is the battery outer shell safe for direct biological skin contact in the event of an accidental enclosure breach?
Absolute safety is our production bottom line. The outermost wrapping layer consists of a high-purity, medical-grade, flame-retardant matte black PVC material. The material formulation is developed to meet the strict requirements of the ISO 10993 biological evaluation series, guaranteeing zero skin irritation, zero sensitization, and 100% heavy-metal-free composition, rendering it completely safe for continuous human contact.
