The 3.7V 400mAh Li-Po Rechargeable Battery is a compact and lightweight lithium polymer battery designed for low-power portable electronics and embedded applications. With an energy capacity of 1.48Wh, it is ideal for Arduino, ESP32, wearable devices, Bluetooth projects, IoT applications, and other battery-powered electronics where space is limited.
⚙️ Key Features
-
Compact 400mAh lithium polymer battery
-
Nominal voltage: 3.7V
-
Energy capacity: 1.48Wh
-
Lightweight and slim design
-
Rechargeable with low self-discharge
-
Stable and reliable power output
-
Ideal for small portable electronic devices
📦 Technical Specifications
|
| Battery Type | Lithium Polymer (Li-Po) |
| Nominal Voltage | 3.7V |
| Capacity | 400mAh |
| Energy | 1.48Wh |
| Maximum Charge Voltage | 4.2V |
| Recommended Cut-off Voltage | 3.0V |
| Dimensions | Approx. 20 × 30 mm (model dependent) |
| Rechargeable | Yes |
| Protection Circuit | Model dependent |
🛠️ Applications
-
Arduino and ESP32 projects
-
Wearable electronics
-
Bluetooth devices
-
IoT applications
-
Portable sensors
-
Mini robotics projects
-
DIY battery-powered electronics
⚠️ Safety Notes
-
Charge only with a Li-Po compatible charger using a 4.2V charging profile.
-
Do not overcharge, over-discharge, puncture, or expose the battery to excessive heat.
-
Use a suitable Battery Management System (BMS) or protection circuit if the battery does not include built-in protection.
