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Rectangular black lithium-ion phone battery, 85.68 by 50.47 by 4.20 mm

Cameron & Co

Cameron & Co DS-CS-MUM002XL cell phone battery 2.05 Ah

SKU CH-9GKN-9H0MD MPN DS-CS-MUM002XL

Replacement lithium-ion battery for Xiaomi 2S, M2, MI2 and MI2s phones, 2.05 Ah capacity

  • Li-ion chemistry delivers reliable daily power
  • 05 Ah capacity extends talk and standby time
  • 7 V output matches original phone spec
  • 68 x 50.47 x 4.20 mm size fits Xiaomi 2S, M2, MI2, MI2s
  • Brand-new OEM-compatible unit replaces BM20 part

Direct replacement for Xiaomi 2S series

This Cameron Sino lithium-ion cell replaces the original BM20 battery in Xiaomi 2S, M2, MI2 and MI2s handsets. It delivers a 2.05 Ah capacity at 3.7 V for 7.59 Wh of energy. The pack is brand new and built to OEM specifications for a straightforward swap.

Standard lithium-ion thermal behaviour

In normal use the cell operates at the typical 3.7 V nominal voltage with no active cooling required. Internal resistance remains low enough that the phone’s own power management handles heat and current draw without extra noise or bulk. No separate charger or conditioning cycle is needed beyond the handset’s normal routine.

Slim black pack with stock connector layout

The 85.68 x 50.47 x 4.20 mm footprint matches the factory battery cavity, so the back cover closes flush and the original screws line up. A single black unit ships ready to install; the existing connector engages directly with the phone’s board for immediate operation.

Highlights

  • Li-ion chemistry delivers reliable daily power
  • 05 Ah capacity extends talk and standby time
  • 7 V output matches original phone spec
  • 68 x 50.47 x 4.20 mm size fits Xiaomi 2S, M2, MI2, MI2s
  • Brand-new OEM-compatible unit replaces BM20 part

Specifications

BrandCameron Sino
ModelDS-CS-MUM002XL

Questions about this item

How do I install the DS-CS-MUM002XL battery in my Xiaomi 2S, and which step is often missed?

Power off the phone, remove the back cover, disconnect the old battery connector, fit the new 85.68 x 50.47 x 4.20 mm cell, reconnect the connector securely, then replace the cover. The step most often missed is fully seating the connector before closing the case.

What maintenance or replacement will the DS-CS-MUM002XL need over time?

As a 3.7 V 2050 mAh Li-ion cell, it will gradually lose capacity after repeated charge cycles. No routine maintenance is required; when runtime drops below acceptable levels, replace the battery with another compatible unit.

What limit appears first when the DS-CS-MUM002XL is used continuously under load?

The 7.59 Wh capacity is the first limit reached during sustained use; once the stored energy is depleted the voltage drops and the phone shuts down until recharged.

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