Original Xiaomi Redmi Y1 / Y2 / Note 5A / Note 5A Pro / Mi A1 / Mi 5X Battery BN31 – 3080mAh

The Xiaomi Mi A1 Battery BN31 is a 3080mAh Li-Ion Polymer replacement battery designed for compatible Xiaomi Redmi and Mi smartphones. With approximately 3.85V voltage and a specified charging time of 2 to 3 hours, this replacement battery is suitable for replacing an old, weak, or degraded battery.

This Xiaomi BN31 battery is listed as compatible with the Xiaomi Mi A1 / Mi 5X, as well as the Redmi Y1, Redmi Y2, Redmi Note 5A, and Redmi S2 models mentioned below. It is supplied in loose packing and comes with a 90 Days (3 Months) warranty.

Xiaomi BN31 Battery Specifications

Compatible Models

The Xiaomi Mi A1 Battery BN31 is listed as compatible with:

• Xiaomi Redmi Y1 / Redmi Note 5A – MDI6S
• Xiaomi Redmi Y2 / Redmi S2 – M1803E6G, M1803E6H, M1803E6I
• Xiaomi Mi A1 / Mi 5X – MDG2, MDI2

Important: Please check your device’s exact model number and existing battery model BN31 before ordering to help ensure compatibility.

Key Features

• 3080mAh battery capacity
• Li-Ion Polymer battery type
• Approx. 3.85V voltage
• Charging time of approximately 2 to 3 hours
• Designed for compatible Xiaomi Redmi and Mi smartphones
• Suitable for replacing an old, weak, or degraded battery
• Approximate weight: 55.5g
• Supplied in Loose Packing
• 90 Days (3 Months) warranty
• Country of Origin: China

Why Replace Your Xiaomi Mi A1 Battery?

With extended use, a smartphone battery may gradually lose its ability to hold a charge. If your Mi A1 or another compatible Xiaomi device is experiencing:

• Fast battery drain
• Reduced battery backup
• Frequent charging
• Unexpected shutdowns
• Poor battery performance
• An old or degraded battery

then replacing the battery with a compatible BN31 3080mAh battery can help restore dependable everyday power performance.

Package Contents

• 1 × Xiaomi BN31 3080mAh Replacement Battery
• Loose Packing

Warranty

This Xiaomi Mi A1 Battery BN31 comes with a 90 Days (3 Months) warranty.

Please handle and install the battery carefully. Warranty coverage may be affected by physical damage, puncturing, bending, short-circuiting, liquid exposure, overheating, or improper installation.

Battery Safety Guidelines

For safe handling and installation:

• Have the battery installed by a qualified technician.
• Do not puncture, bend, crush, or disassemble the battery.
• Do not short-circuit the battery terminals.
• Keep the battery away from excessive heat and open flames.
• Keep the battery away from water and other liquids.
• Do not use or install a swollen or physically damaged battery.
• Follow proper installation and charging procedures.

Before Ordering

Before purchasing the Xiaomi Mi A1 Battery BN31, please verify:

1. Your smartphone’s exact model number.
2. The battery model number printed on your existing battery.
3. Battery connector and physical compatibility.
4. The compatible models and model numbers listed above.

Matching the BN31 battery model with your device before ordering can help avoid compatibility issues.

Frequently Asked Questions

Is this battery compatible with Xiaomi Mi A1?

Yes. The BN31 battery is listed as compatible with the Xiaomi Mi A1 / Mi 5X (MDG2, MDI2).

What is the capacity of the Xiaomi Mi A1 BN31 battery?

The BN31 battery has a 3080mAh capacity.

What type of battery is BN31?

The BN31 is a Li-Ion Polymer battery.

What is the voltage of the BN31 battery?

The approximate voltage is 3.85V.

Which other Xiaomi phones are compatible with BN31?

The supplied compatibility list includes Redmi Y1 / Redmi Note 5A, Redmi Y2 / Redmi S2, and Mi A1 / Mi 5X.

What is the warranty period?

This battery comes with a 90 Days (3 Months) warranty.

Is the battery supplied in retail packaging?

No. The supplied packing specification is Loose Packing.

• Xiaomi Mi A1 Battery BN31
• Mi A1 BN31 Battery
• Xiaomi Mi A1 Battery Replacement
• Xiaomi Mi 5X Battery BN31
• Redmi Y1 Battery BN31
• Redmi Y2 Battery BN31
• Redmi Note 5A Battery BN31
• Redmi S2 Battery BN31
• Xiaomi BN31 3080mAh Battery
• BN31 Battery Replacement
• Original Xiaomi BN31 Battery
• Xiaomi Redmi Battery BN31
• 3080mAh Xiaomi Replacement Battery

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