SPIDER Automation | 3.7V 400mAh Micro Li-Po Battery | PCM Protected Compact Rechargeable Cell
The 3.7V 400mAh Micro Li-Po Battery is a compact single-cell Lithium Polymer rechargeable battery designed for portable electronic products, IoT devices and embedded applications. Its small physical profile makes it suitable for equipment where available installation space and battery weight are important design considerations.
The battery incorporates an integrated Protection Circuit Module (PCM) and provides a nominal 3.7V supply. Its rated capacity and specified discharge rate make it suitable for compatible low-power electronic systems. For proper integration, the charging circuit, connected load and battery voltage requirements should be matched to the battery’s electrical characteristics.
Technical Features & Functional Characteristics
- Single-Cell Lithium Polymer Design: Provides a rechargeable battery supply for electronic products designed around a single-cell Li-Po voltage range.
- 400mAh Energy Storage Capacity: Supports compact battery-powered applications requiring a modest amount of stored energy.
- Integrated PCM Protection: Includes a Protection Circuit Module as part of the battery assembly.
- Specified 0.2C Discharge Rate: Defines the stated discharge rate relative to the battery’s rated capacity.
- Compact Dimensions: The slim physical profile supports integration into small electronic enclosures and custom product designs.
- Lightweight Construction: Helps minimise the battery’s contribution to the overall weight of portable equipment.
- Rechargeable Operation: Designed for repeated charging and discharging using a compatible Li-Po charging system.
Electrical Configuration & Charging Requirements
This battery uses a single-cell Lithium Polymer configuration with a nominal voltage of 3.7V. A fully charged conventional single-cell Li-Po battery reaches 4.2V. The charging circuit must therefore use a compatible 4.2V Constant Current / Constant Voltage (CC/CV) charging profile.
The specified 0.2C discharge rate corresponds to a calculated current of 80mA based on the rated capacity. This is a C-rate calculation and should not be treated as an independently verified continuous-current rating. The integrated PCM is a protection circuit, not a battery charger or voltage regulator.
Applications
The compact construction and rechargeable characteristics make this battery suitable for small electronic products that require an integrated battery power source.
- IoT Devices: Compact battery-powered sensor nodes, monitoring modules and connected electronic products.
- Portable Electronics: Small handheld devices requiring a rechargeable power source.
- Electronic Gadgets: Compact consumer electronics and custom-designed electronic products.
- Wireless Devices: Battery-powered wireless modules and portable accessories, where the electrical requirements are compatible.
- Electronic Toys: Compact rechargeable power systems for compatible electronic toys.
- Embedded Systems: Microcontroller-based products designed for single-cell Li-Po operation.
- DIY Electronics Projects: Portable prototypes, custom circuits and compact battery-powered assemblies.
- Compact Sensor Modules: Small sensing products requiring an onboard rechargeable battery.
Package Contents
- 1 × 3.7V 400mAh PCM Protected Micro Li-Po Battery
Product Specifications
| Parameter | Specification |
|---|---|
| Product Type | Micro Lithium Polymer (Li-Po) Rechargeable Battery |
| Battery Chemistry | Lithium Polymer (Li-Po) |
| Cell Configuration | Single Cell (1S) |
| Nominal Voltage | 3.7V DC |
| Full-Charge Voltage | 4.2V DC |
| Rated Capacity | 400mAh (0.4Ah) |
| Nominal Energy | Approximately 1.48Wh (calculated from nominal voltage × rated capacity) |
| Discharge Rate | 0.2C |
| Calculated Current at 0.2C | 80mA (calculated from rated capacity) |
| Protection Circuit | Integrated PCM Protection |
| Charging Method | Single-cell Li-Po CC/CV charging |
| Charging Voltage | 4.2V DC |
| Recommended Charging Current | Refer to the battery datasheet |
| Cycle Life | 500 cycles |
| Operating Temperature | 0°C to 50°C |
| Length | 40mm |
| Width | 20mm |
| Height / Thickness | 6mm |
| Overall Dimensions (L × W × H) | 40 × 20 × 6mm |
| Weight | 9g |
| Rechargeable | Yes |
| Package Quantity | 1 Battery |
Connection & Operating Recommendations
Use a charging and power-management arrangement specifically designed for a single-cell Li-Po battery. The battery should operate within its specified temperature range, and the connected electronics must be compatible with its voltage and discharge characteristics.
- Use a Compatible Charging Circuit: Charge through a dedicated single-cell Li-Po charger using a 4.2V CC/CV charging profile.
- Select the Appropriate Charging Current: Follow the battery datasheet’s charging-current recommendation. The discharge C-rate does not establish the permitted charging current.
- Observe Battery Polarity: Connect positive and negative terminals correctly. Confirm the wiring or datasheet before making connections.
- Match the Connected Load: Ensure that the device’s voltage and current requirements are compatible with the battery’s electrical ratings.
- Avoid Excessive Heat: Keep the battery away from direct sunlight and external heat sources.
- Allow Temperature to Stabilise: Do not charge a battery while it remains warm after use or operate it while it remains warm after charging.
- Disconnect During Extended Non-Use: Disconnect the battery from the equipment where practical when it will remain unused for an extended period.
- Use Suitable Storage: Store the battery in a non-conductive, fire-resistant container, away from metal objects and other conductive materials.
- Prevent Physical Damage: Do not puncture, crush, bend or deform the battery pouch.
