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Rectangular black Li-Polymer cell phone battery, 77.80 by 65.30 by 3.60 mm

Cameron & Co

Cameron & Co DS-CS-MUM412XL cell phone battery 4000mAh 3.85V

SKU CH-CE0J-PQMJN MPN DS-CS-MUM412XL

Replacement Li-Polymer battery for Xiaomi Note 4X China Version, 4000mAh at 3.85V with BN43 compatibility

  • 4000 mAh capacity extends daily usage
  • 85 V 15.40 Wh rating matches original spec
  • Li-Polymer chemistry keeps the pack slim at 3.60 mm
  • 80 × 65.30 mm footprint fits the Note 4X bay
  • 100 % OEM compatible with BN43 part number

Compatible replacement for Xiaomi Note 4X China

This Cameron & Co DS-CS-MUM412XL battery is a Li-Polymer cell rated at 4000 mAh and 3.85 V, delivering 15.40 Wh. It matches part number BN43 and fits the China Version of the Xiaomi Note 4X and Redmi Note 4X. The unit ships new and black.

Check your exact model

Confirm the handset is the China Version of the Note 4X, as other regional variants may use a different battery. Verify that the original pack carries the BN43 marking so the connector and form factor align. The replacement measures 77.80 x 65.30 x 3.60 mm, so the phone’s battery compartment must accommodate those dimensions.

OEM-compatible build with direct-fit connector

The cell is built to 100% OEM compatibility, meaning the original connector plugs straight in without adapters or soldering. Its slim 3.60 mm profile sits flush inside the chassis, preserving the handset’s original thickness and back-cover fit. Li-Polymer chemistry keeps the pack lightweight while maintaining the rated 4 Ah capacity for daily use.

How it compares

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

Price $18.99
Pricier than about 75% of the 868 comparable items (median $14.99).

Specifications

Product
Brand nameCameron Sino
Model nameDS-CS-MUM412XL

Questions about this item

What comes in the box with the DS-CS-MUM412XL battery and do I need to buy any tools separately?

The box contains one Cameron Sino DS-CS-MUM412XL Li-Polymer battery rated at 3.85V and 4000mAh. No tools or additional components are included.

The listing mentions BN43 and X-Longer — which version should I choose for my Xiaomi Note 4X China Version?

This DS-CS-MUM412XL model is the X-Longer version built to replace the original BN43 part. It is specified as 100% OEM compatible with the Xiaomi Note 4X China Version.

What does the 4000mAh rating mean for daily runtime once the battery is installed in the phone?

The 4000mAh capacity stores 15.40Wh of energy, matching the original BN43 specification. It restores the factory runtime the phone had when new.

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