100% Original Redmi K40s Battery Replacement – BM49
₹1,299.00
If your Xiaomi Redmi K40s battery drops quickly after a 100% charge, and you’re unsure why, you likely have a depleted battery in your phone. Battery issues commonly appear after using the phone for approximately 3 years, at which point a new battery is required. If you’ve any questions, please get in touch with us.
4 in stock

When your Redmi K40s battery discharges quickly, overheats, or charges slowly, it means that the battery's lifespan is nearing its end. When a battery degrades after continued use, it exhibits some unusual signs before it stops functioning.
As soon as you start facing problems, consider buying a new battery to restore your phone's battery health and performance.
Battery Quality | 100% Original (OEM) |
What's Included | 1 PC of the Original Redmi K40s Battery |
Battery Model Number | BM49 |
Mobile Phone Model Number | Xiaomi Redmi K40s Battery |
Manufacturer | OEM (Navitasys) |
Product Condition | Brand New, Direct From Factory |
Model Name | Xiaomi Redmi K40s Battery |
Rated Voltage | 3.87V |
Battery Capacity | 4500 mAh |
Battery Type | Lithium-Ion |
Warranty | 6 Months |
Q: What is the price of a new Xiaomi Redmi K40s battery?
A 100% original Xiaomi Redmi K40s battery replacement (BM49) costs approximately Rs 1,300-1,400.
Q: Is the battery 100% OEM or a duplicate one?
It is a 100% original OEM battery, identical to the one your phone came with from the factory. Original batteries have exceptional build quality and backup time.
Q: What if the new battery doesn't work?
If your phone doesn't turn on with the new battery, the first thing you should do is charge the battery. Still, if it doesn't work, you're protected by our return and replacement policy.
Q: What is the meaning of an OEM battery?
The OEM battery arrives from the manufacturer who makes the original batteries for new phones.
When we refer to an OEM battery, it means you're purchasing a 100% genuine battery for your phone, made by the original equipment manufacturer (OEM).
Q: Should I install the battery at home?
Replacing the battery at home is relatively easy, but it depends on an individual's expertise. You can do it yourself or hire a mobile phone technician.
Q: What's the battery warranty after installation?
We offer a six-month guarantee on the new battery after installation.
- 6 Months Replacement Guarantee.
- Puffed-up batteries are not eligible, as these issues result from using duplicate accessories and charging cables.
- You will need to share the battery usage graph to verify the problem.
- Warranty policies are not to be misused, and your cooperation is always necessary.
You can return the product in its original condition within 30 days of delivery. However, you can't return a product after installing it.
- Delivery Charges: Free Delivery.
- Shipping Time: 1 Hour after confirmed order.
- Delivery Time: 3 -4 Working Days (Remote Locations Take Additional 2-3 days)
- Packing: We use a hard plastic box, bubble wrap, and a corrugated box to pack fragile items, and there is no chance of damage.
- Defective Battery Replacement: If you face any issues while testing the new battery during installation, you can always contact us for a free pickup and replacement.
You can always contact our support team for product or order related queries. Please call our helpline at 8112293573.