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Rectangular black lithium-polymer phone battery, 73 by 63 by 4.3 mm

Cameron & Co

Cameron & Co DS-CS-MUM003SL cell phone battery 3.8 V 3000 mAh

SKU CH-ZAEW-PT0CW MPN DS-CS-MUM003SL

Lithium-polymer replacement battery delivers 3.8 V and 3000 mAh for Xiaomi Mi 3 models

  • Replacement battery restores power to Xiaomi Mi 3
  • 3000 mAh capacity delivers extended talk and standby time
  • Li-Polymer chemistry offers stable voltage and slim profile
  • Precise 73.00 x 63.40 x 4.30 mm dimensions ensure exact fit
  • 100 % OEM compatible for reliable performance from first charge

Direct replacement for Xiaomi Mi 3

This Cameron & Co DS-CS-MUM003SL battery is a 3.8 V 3000 mAh lithium-polymer cell built for the Xiaomi 3, M3 and Mi 3 handsets. It matches the original BM31 part number and delivers 11.40 Wh of capacity in a black finish. The unit is supplied new and rated as 100 % OEM compatible. It restores factory runtime without modification.

Verify model and connector before fitting

Confirm your handset is a Xiaomi 3, M3 or Mi 3 and that the original battery carries the BM31 code. Check that the existing cell measures approximately 73.00 x 63.40 x 4.30 mm so the replacement sits flush. Ensure the phone powers down completely before starting the swap. No tools or adhesives are mentioned in the data.

Suits owners of the listed Xiaomi phones needing

Buyers with other Xiaomi models or different brands should look elsewhere because the connector and dimensions are specific to the 3, M3 and Mi 3 series. Anyone requiring a higher capacity than 3000 mAh or a different voltage will need a different battery. The pack is a single cell only; multi-cell packs are not supported.

How it compares

Measured against everything we stock in Replacement Phone Batteries, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 60% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-MUM003SL

Questions about this item

What comes in the box with the Cameron & Co DS-CS-MUM003SL battery?

The package contains one new 3.8 V 3000 mAh Li-Polymer battery in black. No tools, adhesive or screws are included, so reuse the original hardware from the phone.

How do I choose between the listed versions for the Xiaomi Mi 3?

This model DS-CS-MUM003SL matches the original BM31 part number and fits the Xiaomi 3, M3 and Mi 3. No other capacity or voltage variants are offered for these devices.

What does the 3000 mAh rating mean for daily use in a Xiaomi Mi 3?

The 11.40 Wh cell restores the factory runtime for a Mi 3, M3 or 3. Expect similar screen-on time and standby as the original battery when the phone is in good condition.

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