KP 903040 3.7V 1200mAh Lithium Polymer LiPo Rechargeable Battery with 2-Pin Connector – 4.44Wh

1. Product Overview

The KP 903040 is a 3.7V, 1200mAh rechargeable lithium polymer pouch battery providing 4.44Wh of nominal energy. Its compact, flat construction makes it suitable for compatible portable electronics, rechargeable toys, robotics, Bluetooth devices and DIY projects.

The battery is supplied with red and black wires terminating in a white 2-pin connector. A protection PCB is fitted along one edge of the battery.

This battery is not verified as a high-discharge model. Confirm the equipment’s operating and peak-current requirements before installation.

2. Electrical Specifications

3. Physical Specifications

The finished battery may be slightly larger than the nominal cell dimensions because of the protection PCB, tape, wiring, connector and pouch tolerances. Measure the battery compartment before ordering for a tight enclosure.

4. Suitable Applications

This battery may be suitable for compatible:

• Rechargeable RC toys
• Small robotics projects
• Bluetooth speakers and wireless devices
• GPS and tracking equipment
• IoT devices
• Portable electronic instruments
• Embedded electronic systems
• DIY battery-powered projects
• Other equipment designed for a 1S LiPo battery

Suitability depends on the equipment’s voltage, physical dimensions, connector, polarity, charging circuit and current requirement.

5. Charging and Usage

• Charge only with a compatible 1S lithium-ion/LiPo charging circuit.
• The maximum full-charge voltage must not exceed 4.2V.
• Do not connect the battery directly to a 5V USB supply without a suitable LiPo charging controller.
• Verify the connector polarity before connecting the battery.
• Do not assume polarity based only on the connector shape.
• Do not use the battery where the device’s operating or peak-current requirement exceeds the battery or protection-PCB rating.
• Avoid pulling, twisting or placing mechanical stress on the wires and connector.

6. Compatibility Note

Before purchasing or installing this battery, verify:

• 3.7V nominal battery compatibility
• 4.2V full-charge compatibility
• 1200mAh capacity requirement
• Battery compartment dimensions
• Connector shape and size
• Connector polarity and wire sequence
• Device charging system
• Operating and peak-current requirements
• Available space for the battery, wires and connector

A matching voltage or similar-looking connector does not guarantee compatibility. Reversed polarity can damage the battery and connected equipment.

7. Safety Note

• Do not puncture, crush, bend or open the battery pouch.
• Do not short-circuit the wires or connector.
• Do not overcharge or use an incompatible charger.
• Keep away from fire, water and excessive heat.
• Do not use a swollen, leaking or physically damaged battery.
• Stop using the battery if it becomes unusually hot.
• Protect the connector from conductive objects during storage and transportation.