Ultra-Flat 16.5mm Profile: Replaces bulky cylindrical packs with a card-like slim layout, seamlessly hiding in jacket inner pockets without any sitting pressure.
Dual-Layer Anti-Puncture Shielding: Features internal polymer PC isolation plates and heavy-duty flame-retardant PVC to completely eliminate piercing risks during intense outdoor sports.
Dual-Purpose Type-C PD Interface: Operates as both a high-efficiency heating controller and a standard emergency power bank for smartphones, backed by micro-ampere ultra-low standby leakage.
Upgrade your smart apparel with HIMAX ultra-flat 7.4V LiPo batteries. Engineered with dual-layer anti-puncture shielding for uncompromised style and winter comfort.
✦ Redefining Winter Comfort: The Symbiosis of High-Fashion Tailoring and Advanced Battery Engineering
As winter apparel designers, we often face a frustrating trade-off: traditional cylindrical battery packs inevitably ruin the silhouette of elegant heated coats, electric snow jackets, or intelligent heated shirts, causing a localized bulge and an uncomfortable pressing sensation when leaning back. Working closely with HIMAX battery experts, we resolved this ergonomic failure. By implementing the 805080-2S1P consumer-grade long-life A-grade ternary lithium polymer system, we successfully flattened the profile. Wrapping the cells in a premium matte black flame-retardant PVC heat shrink film with high-thermal Mylar insulation, this 7.4V flat pack slides weightlessly into inner mesh pockets. But low profile means nothing without security. For skiers and outdoor enthusiasts facing high-impact environments, we embedded internal high-molecular PC puncture-resistant plates protecting the cell edges. Manufactured under a rigorous ISO9001 quality management framework and certified by UN38.3, this integrated structural innovation survives a 1.2-meter multi-angle drop and heavy-weight compression, ensuring zero thermal runaway while maintaining the fashion line’s flawless integrity.
✦ Intelligent Power Delivery: High-Efficiency Thermal Control Meets Everyday Utility
From a strict electrochemical and hardware engineering standpoint, a premium wearable battery demands uncompromising electrical stability and continuous system reliability over consecutive winter cycles. This 7.4V 4000mAh (29.6Wh) energy system maintains a highly stable discharge voltage platform at 25°C, ensuring that your carbon fiber or composite fiber heating elements operate at peak thermal efficiency without sudden power drops. Our proprietary 2S high-precision BMS (Battery Management System) features a dedicated NTC thermistor positioned at the absolute center of the cells, guaranteeing an automatic safety cut-off if temperatures cross 60°C. To maximize user versatility, the pack features an embedded USB Type-C female socket supporting standard BC1.2 and PD fast-charge protocols. It delivers a 2.5A steady continuous output for up to 18.5W heating elements, handles a 4.5A冷态 cold-start pulse for instantaneous warming, and seamlessly switches into a 5V/2A or 9V/1.5A smart output to charge mobile devices. Engineered to meet the strict manufacturing requirements of IEC 62133-2, CE-EMC, RoHS 2.0, and GB 31241, every single batch undergoes 100% factory inspection—including internal resistance matching and hardware-level protection trip tests—making it the ultimate, dependable power solution for modern smart apparel brands.
Specifications
7.4V 4000mAh Thin LiPo Battery 805080-2S1P
Battery Chemical Type
Conventional Ternary Lithium Polymer
System Configuration
2S1P (2 Series, 1 Parallel)
Cell Model Designation
805080-2S1P
Nominal Voltage
7.4V (Tolerance: +/- 0.05V)
Maximum Charge Voltage
8.4V
Discharge Cut-off Voltage
6.0V
Rated Capacity
4000mAh (0.2C discharge to 6.0V)
Total Pack Energy
29.6Wh
Standard Charging Current
Constant Current 1.5A to Constant Voltage 8.4V
Continuous Discharge Current
2.5A Steady Output
Peak Discharge Current
4.5A Transient Pulse (Duration <= 3s)
Overcharge Protection Threshold
4.25V +/- 0.025V per cell
Overdischarge Protection Threshold
3.0V +/- 0.05V per cell
Overcurrent Protection Value
5A +/- 0.3A (Auto-recovery after anomaly removal)
Thermal Sensor Integration
Single Precision NTC Surface Mount Thermistor
Over-Temperature Cut-off
60 deg C System Shut Down (Tolerance: +/- 2 deg C)
Total Physical Dimensions
83.5mm * 51.0mm * 16.5mm (Tolerance: +/- 0.2mm)
Finished Pack Net Weight
Approx. 135g (Extreme lightweight design)
Enclosure Outer Material
Extra-Tough Flame-Retardant Matte Black PVC Heat Shrink
Supported Fast-Charge Protocols
Standard BC1.2 & Power Delivery (PD) Smart Negotiation
Frequently Asked Questions
Choosing the correct power component is critical for the long-term field performance of smart clothing. Below, our battery engineering team addresses five frequent technical challenges that international apparel brands and procurement managers encounter when sourcing 7.4V wearable energy storage systems.
How does this battery protect the wearer from injury if they suffer a heavy crash or sharp impact during alpine skiing?
Standard soft-pack LiPo batteries are highly vulnerable to localized tearing under sharp mechanical penetration, creating severe safety risks. To completely isolate this hazard, HIMAX engineered a robust multi-layered armor: we install high-molecular polymer PC puncture-resistant isolation plates directly over the core cell edges, heavily reinforced with flame-retardant Mylar and wrapped in double-layer thick PVC. It completely passes internal needle-puncture tests without fire or leakage, fully adhering to GB/T 2423 safety benchmarks for active wear.
Heated clothing is purely seasonal. How does the battery prevent swelling or bricking when stored throughout hot summer months?
Summer idling is the single biggest cause of premature battery failure. Our smart 2S BMS integrates an advanced deep-sleep power management logic. When there is no active load or external wake-up signal, the entire system’s residual leakage current drops into the single-digit micro-ampere range. This design restricted the monthly self-discharge decay to <=1.5% at 25°C room storage. Combined with Tier-1 premium factory cells exhibiting a flatness tolerance of <=0.1mm, the battery completely avoids swelling and retains healthy capacity even after months of prolonged storage.
Can our clothing line use this battery to directly drive both higher-wattage heating zones and fast charge user cellphones?
Absolutely. This is a true intelligent 2-in-1 power hub. Electrically, the battery supports a 2.5A continuous steady-state output designed for up to 18.5W carbon fiber heating zones, and accommodates an intensive 4.5A pulse for less than 3 seconds to tackle the cold-start resistance surge of composite fibers. Thanks to the built-in smart controller supporting standard BC1.2 and PD fast charge handshakes via the integrated Type-C port, it dynamically bargains for 5V/2A and 9V/1.5A lines to charge smart electronic devices on the go.
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.
What is the real-world cycle life of this ternary LiPo pack, and how many winters will it actively survive?
The battery delivers >=500 complete cycles at 80% Depth of Discharge (DOD) before its capacity degrades significantly. Under typical real-world seasonal parameters—where a consumer charges and discharges their heated vest high-frequently for about 4 to 5 cold months a year—this high-stability platform smoothly covers 3 to 5 consecutive winter periods while maintaining over 80% of its initial nominal performance, outliving most standard wearable market alternatives.
