Xain-USA 3.7V 4400mAh Li-ion Battery Pack - JST-XH 2-Pin, Built-in BMS

Rechargeable battery pack for compatible speakers, lighting and DIY electronics.

Compatibility

• Applications: Compatible speakers, solar lights, toys, lamps and DIY electronics.

Specifications

• Voltage: 3.7V nominal; Capacity: 4400mAh; Energy: 16.28Wh.
• Chemistry: rechargeable lithium-ion; configuration: 1S2P; two 3.7V 2200mAh cells connected in parallel.
• Connection: White JST-XH 2-pin; positive polarity as shown in the connector image; red and black leads.
• Protection: Built-in battery management system (BMS).
• Dimensions: 67 × 37 × 19 mm.
• Weight: 3.3 oz.

Before ordering

• Compare the original battery’s voltage, part number, connector, pin assignments, polarity and dimensions. Confirm the device’s charging and current requirements before ordering.

Care & support

• Use only with compatible equipment and charging systems. Do not short-circuit, puncture or use a damaged battery. Keep away from extreme temperatures and children.
• Warranty: one-year limited warranty against manufacturing defects; terms apply.
• Returns: accepted within 30 days, subject to the return policy.
• Compatibility help: support@xain-usa-marketplace.com. Manuals and care information: xain-usa.com.

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.