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Black rectangular lithium-ion battery pack with label showing 14.4V 5200mAh

KingSener

KingSener S1-260-4S2P 14.4V 5200mAh laptop battery

SKU CH-AYM6-080SK MPN S1-260-4S2P

14.4V 5200mAh Li-ion replacement battery for Xiaomi Mijia robot vacuums

  • Battery Voltage14.4V
  • Battery Capacity5200mAh/74.88WH
  • 4 V 5200 mAh capacity powers extended cleaning sessions
  • Li-ion cells deliver reliable energy for Xiaomi Mijia robot vacuums
  • Direct replacement for S1-260-4S2P part ensures hassle-free installation
  • 88 Wh rating supports longer runtimes between charges
  • Brand-new condition guarantees full performance from first use

What this battery replaces

The KingSener S1-260-4S2P is a 14.4V 5200mAh lithium-ion replacement battery built for Xiaomi Mijia 2 Pro robot vacuum cleaners. It matches the original part number S1-260-4S2P and fits models including MJSTS1, MJST1S, MJSTS and MJSTP. Buyers who need a direct swap for a depleted pack will find the correct voltage and connector here. This is not for users whose device requires a different voltage or physical layout.

Capacity and runtime

The pack stores 74.88Wh of energy at 5200mAh, which determines how long the vacuum can run between charges. Runtime scales with the cleaner's power draw, so heavier suction modes will deplete the battery faster. There is no built-in fuel gauge or smart communication protocol; the host device manages charge termination and low-voltage cutoff. Buyers who want runtime data logged to an app cannot get that from this pack.

Voltage match decides fit

The single specification that confirms compatibility is the 14.4V nominal voltage. If the original battery label shows a different voltage, this unit will not work safely. The 5200mAh capacity only affects run time, not electrical compatibility. Always verify the voltage printed on the old battery before ordering.

Highlights

  • 4 V 5200 mAh capacity powers extended cleaning sessions
  • Li-ion cells deliver reliable energy for Xiaomi Mijia robot vacuums
  • Direct replacement for S1-260-4S2P part ensures hassle-free installation
  • 88 Wh rating supports longer runtimes between charges
  • Brand-new condition guarantees full performance from first use

Specifications

BrandKingSener
ModelS1-260-4S2P
Part NumberS1-260-4S2P
Battery Voltage14.4V
Battery Capacity5200mAh/74.88WH

Questions about this item

How do I pick the right capacity for my vacuum?

This pack is the 5200mAh 74.88WH version; match that rating to the original battery label on your Mijia 2 Pro or listed robot models.

What runtime does 14.4V 5200mAh give in a real cleaner?

The 14.4V 5200mAh rating delivers 74.88WH of energy; actual run time depends on the robot's power draw and cleaning mode.

Does the S1-260-4S2P use a standard connector for Xiaomi robots?

It is built as a direct replacement for part number S1-260-4S2P and fits the compatible Mijia 2 Pro and robot vacuum models listed.

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