Redmi K40 Ulta Battery 3.87V 4400mAh Li-Polymer - Compatible Replacement

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  • Regular price $20.00


Replace the battery in your Redmi K40 Ulta with this 3.87 V 4400 mAh Li-Polymer compatible replacement. Confirm your full equipment model and compare the connector with the product photos before ordering.

  • Included: One replacement battery pack.
  • Compatible equipment: Redmi K40 Ulta

Current Estimated Delivery Date: 1-2 Weeks

Battery specifications

Voltage 3.87 V
Capacity 4400 mAh
Chemistry Li-Polymer
Energy 17.03 Wh
Dimensions 87.00 x 64.20 x 4.30mm
Battery weight 58.8 g /2.07 oz

Check the fit for your Redmi K40 Ulta

Compare the connector shape, wire arrangement and polarity with your original battery. Check all listed specifications; a similar model name or matching voltage alone does not confirm a fit.

Replacement battery numbers
  • Xiaomi: BM4Y

Need help matching your battery?

Contact Rocket Distributing with your equipment model and a photo of the battery label and connector.

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Additional compatibility details

X-Longer