Xain-USA 3.7V 5200mAh Replacement Battery for Altec Lansing iMW577 & iMW577-AB Bluetooth Speakers, PN INR18650-2S, 3A BMS Protection, Built-In 10K NTC Thermistor, Mini-SPOX 3-Pin

Product Description

Restore reliable power and dependable playback performance to your compatible Altec Lansing Bluetooth speaker with the Xain-USA 3.7V 5200mAh (19.24Wh) rechargeable lithium-ion replacement battery pack.

Designed for Altec Lansing iMW577 and iMW577-AB Bluetooth speakers, this replacement battery features two 2600mAh lithium-ion cells arranged in a 1S2P parallel configuration, delivering a combined capacity of 5200mAh (19.24Wh).

The battery pack incorporates an integrated Battery Management System (BMS) rated for 3A continuous discharge, providing essential electrical protection against overcharging, over-discharging, overcurrent, and short circuits.

A built-in 10K ohm NTC thermistor enables compatible speaker electronics to monitor battery temperature during operation and charging.

Equipped with a Mini-SPOX 3-pin connector, this rechargeable battery is intended to replace compatible original Altec Lansing battery packs identified by part number INR18650-2S.

Compatible Models

• Altec Lansing iMW577 Bluetooth Speaker
• Altec Lansing iMW577-AB Bluetooth Speaker

Replacement Battery Part Number:

• INR18650-2S

Key Features

• 5200mAh High-Capacity Battery: Built with two 2600mAh rechargeable lithium-ion cells connected in parallel, providing 19.24Wh of stored energy for reliable speaker performance.
• 3.7V Nominal Voltage: Designed for compatible Bluetooth speakers operating with a 3.7V lithium-ion battery system.
• 3A Continuous Discharge: Integrated 1S Battery Management System supporting up to 3A continuous discharge, equivalent to 11.1W at nominal voltage.
• Built-In BMS Protection: Helps protect against overcharging, over-discharging, overcurrent, and short-circuit conditions.
• 10K NTC Temperature Monitoring: Built-in 10K ohm NTC thermistor allows compatible speaker electronics to monitor battery temperature.
• Mini-SPOX 3-Pin Connector: Designed for compatible Altec Lansing speaker battery interfaces.
• Compact Battery Design: Approximate dimensions of 66.2 × 37.1 × 19.1 mm for installation in compatible battery compartments.
• Rechargeable Lithium-Ion Technology: Designed for repeated charging and dependable portable audio performance.

Technical Specifications

Specification                                      Details

Brand                                                 Xain-USA

Model Number                                    XA-0375200-ALi

Replacement Part Number                    INR18650-2S

Battery Chemistry                               Rechargeable Lithium-Ion

Cell Configuration                               1S2P (2 Cells in Parallel)

Nominal Voltage                                 3.7V DC

Maximum Charging Voltage                4.2V DC

Rated Capacity                                    5200mAh (5.2Ah)

Total Energy                                       19.24Wh

BMS                                                  Integrated 1S Protection Circuit

Continuous Discharge Rating               3A

Nominal Maximum Continuous Output 11.1W

Temperature Sensor                             Built-In 10K Ohm NTC Thermistor

Connector                                           Mini-SPOX 3-Pin

Dimensions                                         Approximately 66.2 × 37.1 × 19.1 mm

Weight Approximately:                        3.3 oz (94 grams).

Important Compatibility Notice

Please verify compatibility before ordering.

This battery is designed for compatible Altec Lansing iMW577 and iMW577-AB Bluetooth speakers using a 3.7V lithium-ion battery system.

Before purchasing, please verify:

• Voltage: Your original battery must operate on a 3.7V nominal lithium-ion system.
• Connector: Confirm that the Mini-SPOX 3-pin connector matches your original battery connector.
• Connector Polarity: Verify the positive, negative, and temperature-sensor wire positions against your original battery.
• Dimensions: Ensure the replacement battery fits inside your speaker's battery compartment.
• Battery Configuration: This replacement uses two 2600mAh lithium-ion cells connected in parallel (1S2P), with a maximum charging voltage of 4.2V.

Important Note: The original battery part number INR18650-2S is used for replacement identification. The electrical configuration of this Xain-USA battery is 1S2P (3.7V nominal), not a 7.4V 2S series battery.

If you are unsure about connector compatibility or polarity, please contact Xain-USA and provide photos of your original battery and connector before ordering.

Warranty & Customer Support

ONE-YEAR U.S.-BASED WARRANTY

Covered by Xain-USA's one-year warranty and supported by our U.S.-based customer service team.

For assistance or battery connector compatibility questions, please contact service@xain-usa.com.

Xain-USA LLC – Your Powerhouse.

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.