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The LP-422339-PACK is a premium lithium-polymer (Li-Pol) battery engineered for small, power-efficient electronics, featuring a slim prismatic form factor (42mm × 23mm × 3.9mm), nominal 3.7V voltage (4.2V full charge), and 350mAh capacity—delivering 1.295Wh of reliable energy. Designed with Li-Pol’s signature flexible, thin profile, this battery merges space-saving design, lightweight construction, and stable performance, making it the ideal power source for wearables, mini IoT sensors, portable medical devices, and compact consumer gadgets that demand tiny, long-lasting power.
Core Advantages of Pouch Li-ion Design
Crafted to solve the unique needs of miniaturized devices—where size and weight are critical:
Ultra-Slim & Flexible Design: With a thickness of 4.4mm and prismatic shape, the LP-422339-PACK fits seamlessly into ultra-compact devices like wireless earbuds, smart hearing aids, mini fitness trackers, and micro IoT beacons. Its flexible Li-Pol structure adapts to tight, irregular spaces (unlike rigid cylindrical batteries), enabling sleeker, more ergonomic product designs for modern gadgets.
350mAh Targeted Capacity: Optimized for low-power devices, delivering balanced runtime: powering a pair of true wireless earbuds for 4-6 hours of continuous playback, a mini smartwatch for 2-3 days (basic features), a small IoT temperature sensor for 2-4 weeks (low-frequency data transmission), or a portable glucose meter for 10-15 uses. Perfect for devices where every millimeter and gram counts.
Stable 3.7V Voltage Output: Maintains consistent 3.7V nominal voltage throughout discharge, avoiding the voltage drops that cause glitching, reduced functionality, or sudden shutdowns in sensitive small electronics. This stability is critical for precision devices like medical wearables or sensor modules, ensuring accurate performance until full depletion.
Featherweight Construction: Weighing only 8.8g, it adds virtually no bulk to mini gadgets—essential for wearables that need to be lightweight and comfortable for all-day use. Its flat, compact profile maximizes space efficiency, allowing manufacturers to create thinner, more discreet devices.
Ideal For:
Wearable Technology: True wireless earbuds, smart hearing aids, mini fitness trackers, and compact smartwatches.
IoT & Sensors: Micro Bluetooth beacons, environmental monitoring sensors (temperature/humidity), and small GPS trackers.
Portable Medical Devices: Mini glucose meters, portable pulse oximeters, and small health monitors.
Compact Consumer Gadgets: Mini LED flashlights, portable keychain speakers, and tiny handheld game consoles.
DIY & Custom Projects: Small drones (micro models), Arduino-based gadgets, and custom wearable prototypes.
About Us
Shenzhen BAKTH Technology Co., Ltd. was established in 2002. For 21 years, we've specialized in battery pack assembly and PCM/BMS design and production. Our 5,000-square-meter factory features automated production lines and SMT assembly capabilities.
No limitation - we offer competitive pricing based on order quantity. Sample orders are welcome to test our quality before bulk orders.
What's the warranty? How can we guarantee quality?
Standard warranty is 12 months (negotiable for special products). Our complete production process ensures quality before shipment.
What's the lead time?
Standard products: 3-4 weeks for samples (depending on cell availability), 5-8 weeks for bulk orders (varies by model and quantity).
Can we have our own Logo on the battery pack? Can you accept customized battery?
Yes - our professional R&D team can provide customized solutions according to your requirements.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2002
Total Annual:
15000000-20000000
Employee Number:
100~199
Ecer Certification：
Verified Supplier
Shenzhen BAK Technology Co., Ltd. founded in 2002, with more than 22 years experience in design and production of battery packs and PCB/BMS. BAKTH has its own R&D team, advance production & testing facilities. A fully automatic SMT line was introduced in 2021, further enhanced BAKTH producti... Shenzhen BAK Technology Co., Ltd. founded in 2002, with more than 22 years experience in design and production of battery packs and PCB/BMS. BAKTH has its own R&D team, advance production & testing facilities. A fully automatic SMT line was introduced in 2021, further enhanced BAKTH producti...
