3.7V 800mAh Li Ion Polymer Battery Pack 573442P for Space-Constrained Medical

The 573442P is a premium lithium polymer battery, featuring a nominal 3.7V voltage (4.2V full charge), 800mAh capacity, and 2.96Wh energy output. Engineered with advanced lithium polymer chemistry and a slim prismatic form factor (5.9*33.5*44.8 mm), it merges ultra-thin flexibility, stable performance, and lightweight design—making it the ideal power source for wireless earbud charging cases, mini smartwatches, portable Bluetooth speakers, IoT sensors, and other compact consumer electronics that demand space-saving power without compromising runtime.

Engineered for consistent, stable performance in daily use scenarios:

• Stable 3.7V Voltage Output: Maintains a steady 3.7V nominal voltage throughout discharge, avoiding voltage drops that cause device lag, flickering, or sudden shutdowns. This stability is critical for sensitive electronics like smart wearables or IoT sensors, ensuring smooth operation until full depletion.
• Wide Temperature Adaptability: Operates reliably from -20°C to 60°C , performing well in both cold outdoor environments (e.g., winter fitness tracking) and warm indoor settings (e.g., home IoT devices) without compromising performance.
• No Memory Effect: Supports partial charging without capacity degradation. Users can top up the battery anytime (e.g., during work breaks or commutes) without affecting its long-term performance, adapting to busy lifestyles.

• 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.

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.

ISO9001, ISO14001, UL, BIS, KC, USTC, CE, CB - our battery packs have reliable quality assurance.

No limitation - we offer competitive pricing based on order quantity. Sample orders are welcome to test our quality before bulk orders.

Standard warranty is 12 months (negotiable for special products). Our complete production process ensures quality before shipment.

Standard products: 3-4 weeks for samples (depending on cell availability), 5-8 weeks for bulk orders (varies by model and quantity).