Description
🔋 WLY041020 1S 3.7V 55mAh Li-Po Micro Rechargeable Battery Pack
The WLY041020 3.7V 55mAh Lithium Polymer (Li-Po) Battery is an ultra-compact and lightweight rechargeable power cell designed for miniature electronics and ultra-low-power applications. With its small footprint and reliable output, this battery is ideal for IoT sensors, wearable electronics, tiny toys, medical devices, prototypes, and microcontroller-based gadgets.
Built using premium high-density lithium polymer cells, it offers stable voltage, reliable discharge performance, and a long cycle life, ensuring smooth operation for compact electronic systems.
⭐ Key Features
🔋 Ultra-small 55mAh capacity for low-power devices
⚡ Stable 3.7V nominal output
🧩 Super lightweight & slim form factor
🔁 Long service life: 300–500 charge cycles
🔌 Compatible with standard 4.2V Li-ion charging modules (TP4056, MCP73831, etc.)
🛠 Ideal for IoT, embedded electronics, learning kits & prototypes
🔧 Suitable Applications
✔ IoT Sensors & Modules
✔ Wearable Devices & Medical Monitoring
✔ Micro Robots & Educational Electronics
✔ Mini RC Models & Smart Toys
✔ BLE Modules, ESP Chips, NRF Modules
✔ Prototyping & DIY Electronics Kits
⚠ Safety & Charging Guidelines
Charge only using Li-Po compatible charger (4.2V CC/CV)
Avoid deep discharge below 3.0V
Store at 40–60% charge when unused for long periods
Do not puncture, crush, or short-circuit the terminals
