Original Vivo B-K3 Battery for Vivo S1 Pro (1920) / Vivo Y9s (V1945A, V1945T) Mobile – 4500mAh

The Original Vivo B-K3 Battery is a high-quality replacement battery designed for Vivo S1 Pro (1920) and Vivo Y9s (V1945A, V1945T) smartphones. With a 4500mAh capacity and 3.87V voltage, this Li-Ion Polymer battery helps restore reliable battery performance and backup to your device.

If your Vivo smartphone is experiencing fast battery drain, unexpected shutdowns, poor battery backup, or charging issues, replacing the old battery with a compatible Vivo B-K3 replacement battery can help bring back dependable everyday performance.

Feature Details

Compatible Models

Vivo S1 Pro

• Vivo S1 Pro (1920)

Vivo Y9s

• Vivo Y9s (V1945A)
• Vivo Y9s (V1945T)

Important: Please verify your existing battery model number and phone model before ordering to ensure compatibility.

Why Replace Your Vivo S1 Pro / Y9s Battery?

Over time, smartphone batteries naturally lose their ability to hold a charge. You may need a replacement if your phone shows any of the following symptoms:

• Battery drains unusually fast.
• Phone requires frequent charging.
• Battery percentage drops suddenly.
• Phone switches off unexpectedly.
• Battery does not hold charge properly.
• Device performance is affected by low battery levels.
• Battery becomes swollen or physically damaged.
• Phone does not provide the backup it previously provided.

Replacing an aging battery can help restore more reliable battery life and everyday usability.

Original Vivo B-K3 Replacement Battery

This Vivo B-K3 battery is designed as a replacement for compatible Vivo smartphones using the B-K3 battery model. Its 4500mAh capacity provides a suitable power source for everyday smartphone use.

For best results, always match the battery model, phone model, connector, and specifications with your existing battery before installation.

Important Installation Information

Battery replacement should be performed by a qualified mobile phone technician or an experienced professional.

Lithium-ion polymer batteries can be damaged if they are:

• Punctured
• Bent or folded
• Crushed
• Exposed to excessive heat
• Modified or opened
• Installed incorrectly

Do not attempt to force the battery into the device. Improper installation may damage the battery or smartphone and may also void the warranty.

Warranty Information

This Vivo B-K3 Battery comes with a 90 Days (3 Months) warranty against manufacturing defects under normal use.

The warranty is applicable only when the battery is used with the compatible models and installed properly.

Warranty Does Not Cover

The warranty does not cover:

• Physical damage
• Improper installation
• Damage caused during installation
• Punctures, bending, crushing, or deformation
• Water or liquid damage
• Misuse or abuse
• Swelling caused by improper handling
• Bulging caused by external damage
• Accidental damage
• Damage caused by use in incompatible devices
• Tampering, modification, or opening of the battery
• Damage caused by incorrect installation or handling

Battery Safety Guidelines

For safe handling of this Li-Ion Polymer battery:

• Keep the battery away from fire and excessive heat.
• Do not puncture, bend, crush, or disassemble the battery.
• Do not expose the battery to water or other liquids.
• Avoid short-circuiting the battery terminals.
• Use the battery only with compatible devices.
• Have the battery installed by a qualified technician.
• Stop using the battery if it becomes excessively swollen, damaged, or unusually hot.
• Keep the battery away from children and pets.

Before Ordering

1. Check your phone model and confirm that it is listed under the compatible models.
2. Check your existing battery model and confirm it is B-K3.
3. Verify the battery capacity and voltage before ordering.
4. Make sure the battery connector and physical design match your original battery.
5. If you are unsure about compatibility, contact our support team before placing your order.

Support

For questions regarding compatibility, installation, warranty, or your order:

Email: support@batteryhub.online
Call / WhatsApp: 8356885211
Support Hours: 11:00 AM – 8:00 PM
Sunday: Closed

Frequently Asked Questions

Is this an original Vivo B-K3 battery?

This listing is for a Vivo B-K3 replacement battery intended for the compatible Vivo S1 Pro and Vivo Y9s models listed above.

What is the capacity of the Vivo B-K3 battery?

The battery has a rated capacity of 4500mAh.

What voltage does this battery use?

The approximate voltage is 3.87V.

What type of battery is it?

It is a Li-Ion Polymer battery.

Which phones are compatible with this battery?

It is compatible with:

• Vivo S1 Pro (1920)
• Vivo Y9s (V1945A)
• Vivo Y9s (V1945T)

How long does the battery take to charge?

The approximate charging time is 2 to 3 hours, depending on the phone, charger, charging conditions, and battery status.

What warranty is provided?

The battery comes with a 90 Days (3 Months) warranty against applicable manufacturing defects.

Should I install the battery myself?

Professional installation is recommended. Smartphone battery replacement requires proper tools and handling, especially with Li-Ion Polymer batteries.

What should I check before ordering?

Confirm your phone model, existing battery model B-K3, capacity, voltage, connector, and physical battery design before placing your order.

• Vivo S1 Pro Battery
• Vivo S1 Pro 1920 Battery
• Vivo S1 Pro Replacement Battery
• Vivo B-K3 Battery
• B-K3 Battery
• Vivo Y9s Battery
• Vivo Y9s V1945A Battery
• Vivo Y9s V1945T Battery
• Vivo 4500mAh Battery
• Original Vivo Battery
• Vivo Mobile Battery Replacement
• Vivo Battery 3.87V
• Vivo Li-Ion Polymer Battery