Eufy RoboVac 11S/11S Max Replacement Battery — 2600mAh, 3-Pin

Replacement battery for compatible Eufy RoboVac 11S-series vacuums with a matching 3-pin connector.

Compatibility

• Models: Eufy RoboVac 11S (T2108), 11S Plus (T2119), 11S Max (T2126 and T2130).

Specifications

• Voltage: 14.4V nominal; Capacity: 2600mAh; Energy: 37.4Wh.
• Chemistry: rechargeable lithium-ion; configuration: 4S1P; four 18650 cells.
• Connection: JST-SM 3-pin.
• Dimensions: 2.8 × 1.5 × 1.5 in.
• Weight: 7 oz.
• Protection: Built-in battery management system (BMS).

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.
• Not interchangeable with RoboVac 11 or 11+ models T2102 and T2104, which use a 2-prong connector.

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 warranty; terms apply.
• 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.