Overview
The 3.7V 2500mAh Rechargeable Battery Pack provides high energy density in a compact form factor. This battery is designed for reliability and longevity, featuring a stable discharge rate that is ideal for sensitive electronics. Most of our packs come with an integrated Battery Management System (BMS) protection board to prevent overcharging, over-discharging, and short circuits, ensuring your project (and your home) stays safe.
Key Features
Huge Capacity: 2500mAh provides significantly longer runtimes compared to standard 1000mAh or 1200mAh cells.
Built-in Protection: Internal PCM/BMS circuit protects against over-charge ($>4.2V$) and over-discharge ($<3.0V$).
Standard Connector: Usually equipped with a 2-pin JST-PH 2.0mm or JST-XH connector for “plug-and-play” use with many development boards.
Lightweight Efficiency: Offers a much better power-to-weight ratio than NiMH or Lead-Acid batteries.
Fast Charging: Supports standard 0.5C to 1C charging rates.
Technical Specifications
| Feature | Specification |
| Nominal Voltage | 3.7V |
| Full Charge Voltage | 4.2V |
| Capacity | 2500 mAh |
| Chemistry | Lithium-ion Polymer (Li-Po) / Li-ion |
| Standard Discharge | 0.2C |
| Max Continuous Discharge | 1C (2.5A) |
| Operating Temp | -20°C to 60°C |
| Connector Type | JST-PH 2.0 / Pre-tinned Leads |
Safety Warning
Use a Dedicated Charger: Only charge with a dedicated Li-ion/Li-Po charger (like the TP4056). Never use a standard DC adapter.
Avoid Heat: Do not expose to temperatures above 60°C or direct sunlight for extended periods.
Do Not Puncture: If the battery looks swollen (“puffy”), stop using it immediately and dispose of it safely.
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