Xain-USA 11.1V 1800mAh Rechargeable Li-ion Battery Pack | 19.98Wh | 5A Continuous Discharge | Bare Wire Leads | Built-In BMS & 10KΩ NTC Thermistor | Emergency Lighting, DIY & Electronics

Product Description

The Xain-USA 11.1V 1800mAh rechargeable Li-ion battery pack is designed for compatible emergency lighting fixtures, DIY electronics projects, and a wide range of rechargeable electronic applications requiring an 11.1V lithium-ion power source.

Constructed in a compact 3S1P configuration using three rechargeable 18650 Li-ion cells, this battery pack delivers 19.98Wh of nominal energy and supports up to 5A continuous discharge.

The battery features an integrated Battery Management System (BMS) designed to help protect against common electrical fault conditions, including overcharging, over-discharging, overcurrent, and short circuits.

An integrated 10KΩ NTC thermistor provides temperature-sensing capability for compatible equipment and monitoring circuits.

Equipped with bare wire leads, this battery pack offers flexible electrical connections for compatible emergency lighting equipment, custom battery installations, DIY projects, and other electronic applications requiring a 3S Li-ion battery.

Its compact design makes it suitable for applications with limited installation space, provided all electrical, mechanical, and charging requirements are met.

Common Applications

Designed for compatible equipment and projects requiring an 11.1V rechargeable Li-ion battery pack, including:

• Emergency lighting fixtures and battery backup systems
• DIY electronics projects
• Rechargeable electronic devices
• LED lighting systems
• Portable electronic equipment
• Custom battery-powered devices
• Industrial and commercial electronic equipment
• Other compatible 11.1V Li-ion battery applications

Important: Compatibility must be verified before installation. Matching battery voltage and capacity alone does not guarantee compatibility with a specific device or emergency lighting fixture.

Key Specifications

• Brand: Xain-USA
• Model: XA-1111800-BWT
• Battery Type: Rechargeable Lithium-Ion Battery Pack
• Nominal Voltage: 11.1V
• Maximum Charge Voltage: 12.6V
• Rated Capacity: 1800mAh (1.8Ah)
• Nominal Energy: 19.98Wh
• Cell Configuration: 3S1P
• Cell Count: 3 × 18650 Li-ion Cells
• Maximum Continuous Discharge Current: 5A
• Protection: Built-In Battery Management System (BMS)
• Temperature Sensor: Built-In 10KΩ NTC Thermistor
• Electrical Connection: Bare Wire Leads
• Dimensions: 70 × 57 × 21 mm (2.76 × 2.24 × 0.83 in)
• Approximate Weight: 143.6 g (5.07 oz)

Charge & Discharge Specifications

• Nominal Battery Voltage: 11.1V
• Maximum Charging Voltage: 12.6V
• Standard Charge Current: 360mA (0.2C)
• Charge Current at 0.5C: 900mA
• Discharge Current at 0.5C: 900mA
• Maximum Continuous Discharge Current: 5A
• Required Charging System: Compatible 3S Li-ion CC/CV charger, with a maximum charging voltage of 12.6V

Important: The maximum permitted charging current must be confirmed against the battery manufacturer's specifications before charging.

Key Features

• 11.1V 1800mAh Rechargeable Li-ion Battery: Provides 19.98Wh of nominal energy for compatible emergency lighting, DIY electronics, and general rechargeable applications.
• 3S1P Battery Configuration: Constructed using three rechargeable 18650 Li-ion cells connected in series to provide an 11.1V nominal output.
• Built-In BMS Protection: Integrated battery management circuitry designed to help protect against overcharging, over-discharging, overcurrent, and short-circuit conditions.
• Integrated 10KΩ NTC Thermistor: Provides battery temperature-sensing capability for compatible monitoring systems.
• Up to 5A Continuous Discharge: Designed for compatible electronic applications requiring discharge currents up to 5A.
• Bare Wire Leads: Provides flexible electrical connections for compatible equipment, custom installations, and DIY applications.
• Compact Battery Design: Measures approximately 70 × 57 × 21 mm for installation in compatible equipment compartments.
• Rechargeable Li-ion Technology: Designed for repeated charging and discharging using a compatible 12.6V 3S Li-ion charging system.

Xain-USA Quality & Support

• U.S.-Based Seller and Customer Support
• Battery Packs Inspected and Tested Prior to Shipment
• Integrated Battery Management System (BMS)
• Built-In 10KΩ NTC Thermistor
• 1-Year Xain-USA Warranty

Important Compatibility & Installation Information

This battery pack is equipped with bare wire leads and requires a compatible electrical connection.

Before purchasing or installing, verify the following:

• Voltage: Equipment must support an 11.1V nominal / 12.6V fully charged Li-ion battery pack.
• Capacity: Confirm that 1800mAh meets the equipment's operating time and power requirements.
• Dimensions: Ensure the battery dimensions of 70 × 57 × 21 mm fit the available battery compartment.
• Electrical Connection: Confirm that bare wire leads are appropriate for the intended installation.
• Polarity: Identify and verify all positive, negative, and temperature-sensing connections before installation.
• Charging Compatibility: The equipment must support a 3S Li-ion battery pack with a 12.6V maximum charging voltage.
• Discharge Requirements: Verify that the battery's 5A maximum continuous discharge rating meets the application's requirements.
• Temperature Monitoring: Confirm compatibility with the equipment's NTC temperature-sensing requirements, including thermistor resistance and wiring configuration.
• BMS Compatibility: Verify that the integrated battery protection circuitry is suitable for the intended application.
• Equipment Requirements: Confirm compliance with the equipment manufacturer's replacement-battery specifications and applicable installation requirements.

Do not select a replacement battery based solely on voltage and capacity. Matching electrical specifications does not guarantee compatibility with a particular device or emergency lighting fixture.

Installation Safety: Installation should be performed by qualified personnel familiar with rechargeable lithium-ion batteries. Prevent short circuits, reverse polarity, improper charging, and damage to the battery pack during installation.

For emergency lighting applications, verify that the replacement battery satisfies the fixture manufacturer's electrical, operational, and applicable safety requirements.

To ensure the longevity and safety of your lithium-ion (Li-ion) batteries, follow these care instructions:

• Avoid Extreme Temperatures
• Partial Charge is Better
• Avoid Overcharging
• Minimize Exposure to High Discharge Rates
• Store Properly When Unused
• Use Proper Chargers and Cables
• Keep Battery Contacts Clean

We ship our products using USPS Ground Advantage 2-5 Delivery. Please note that USPS may experience delays in its network.

Refer to your receipt email for the tracking code to view updates.

Warranty: Products advertised with a one-year warranty are covered against manufacturing defects. Check this listing for the applicable warranty. Contact our U.S.-based team with your order number and photos for a warranty or performance issue.

Standard returns: Request within 30 days of delivery. Items must be unused, uninstalled and complete in their original packaging; exclusions apply.

Return shipping: The buyer pays return shipping and prints the label. For a damaged, defective or incorrect item, contact us first to confirm the resolution and shipping arrangements. A prepaid label is not automatic.

Read the full return policy and warranty guidance or email support@xain-usa-marketplace.com.