KP 701855 3.7V 500mAh Lithium Polymer Rechargeable Battery with 2-Pin Connector – 1.85Wh

1. Product Overview

The KP-701855 is a compact 3.7V 500mAh lithium polymer rechargeable battery designed for compatible RC toys, small drones, portable electronics and DIY projects. It provides 1.85Wh of nominal energy and comes with red and black wires terminated in a white 2-pin connector.

Its compact pouch construction makes it suitable for devices with limited battery space. Compatibility must be checked carefully before installation, particularly the dimensions, connector, polarity and required discharge current.

2. Electrical Specifications

3. Physical Specifications

• Battery type: Soft LiPo pouch cell
• Approximate nominal dimensions: 55 × 18 × 7 mm
• Wire configuration: 2-wire output
• Connector: Pre-fitted white 2-pin plug
• Protection PCB: A PCB section is visible on the battery pack; specific protection functions are not stated
• Polarity: Red wire is positive and black wire is negative

Finished-pack dimensions may vary slightly because of the pouch, protection PCB, insulation tape, wires and manufacturing tolerances.

4. Suitable Applications

This battery may be used in compatible:

• RC drones and quadcopters
• RC helicopters and toys
• Mini robotics projects
• Bluetooth and portable electronic devices
• Small rechargeable gadgets
• Embedded electronics
• DIY battery-powered projects

The device must be designed for a single-cell 3.7V LiPo battery and must operate within the battery’s supported current capability.

5. Charging and Usage

Use only a charger designed for a single-cell 3.7V lithium polymer battery with a maximum charging voltage of 4.2V.

Do not connect the battery directly to a 5V power supply or use a charger intended for a different battery chemistry or cell configuration. Confirm the connector polarity before connecting it to the device or charger.

6. Compatibility Note

Before purchasing or installing this battery, verify:

• 3.7V nominal battery compatibility
• 4.2V full-charge voltage
• Available battery compartment dimensions
• Connector shape and size
• Connector polarity and wire sequence
• Device charging system
• Required discharge current
• Available space for the battery, wires and connector

A similar-looking connector does not guarantee identical polarity. Always compare the wire arrangement with the original battery.

7. Safety Note

• Do not puncture, crush or bend the battery.
• Do not short-circuit the wires or connector.
• Do not overcharge or over-discharge the battery.
• Keep away from fire, water and excessive heat.
• Do not use a swollen, leaking or physically damaged battery.
• Always observe correct polarity.
• Charge only with a compatible 1S LiPo charger.