Description
Introducing our 1000 mAh single-cell Lithium-ion Polymer (Li-Po) battery, a slim, flat power source for compact gadgets and IoT devices. Its 503040 form factor spreads the capacity across a wider, thinner pouch, so it fits neatly behind displays, inside enclosures and in wearable projects.
Specifications:
- Model: 503040
- Capacity: 1000 mAh
- Dimensions: 5.0 x 30 x 40 mm (Thickness x Width x Height)
- Nominal Voltage: 3.7V
- Fully Charged Voltage: 4.2V
- Discharge Cut-off Voltage: 3.0V
- Protection Circuitry: Built-in to prevent overcharging and over-discharging
- Connector Type: JST connector
About This Li-Po Battery
Designed for slim, space-constrained applications, this battery comes with built-in protection circuitry for safe operation. Charge it with a Li-Ion/LiPo constant-current/constant-voltage (CC/CV) charger at a recommended rate of 500 mA, up to a maximum of 1A.
Key Characteristics
- Slim Profile: Just 5 mm thick, ideal for flat enclosures and behind-display mounting.
- Lightweight Design: Perfect for portable and handheld projects.
- Safe and Reliable: Includes protection against overcharging and over-discharging.
- Versatile Use: Powers ESP32 boards, IoT nodes, sensors and small devices.
Applications
- Wearable Electronics and Smartwatch Projects
- Portable IoT Devices and Sensor Nodes
- Handheld Gadgets with OLED / TFT Displays
- Bluetooth Devices and Remote-Controlled Toys
Note:
- Product images may vary slightly in size and color.
- Compatible with TP4056 charging modules. The standard 1A charge rate is at this cell’s maximum, so for longer battery life, replace the RPROG resistor with a 2 kΩ resistor to charge at about 580 mA.
- Refer to our guide for proper usage and handling of Li-Po batteries.

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