Sale!
BN46 4000mAh 3.85V Li-Polymer replacement battery for Redmi Note 8, Redmi Note 8T, Redmi 7, and Redmi Note 6, front view on white background showing battery surface and connector flex cable

BN46 4000mAh 3.85V Li-Polymer Replacement Battery for Redmi Note 8 / Note 8T / Redmi 7 / Note 6 18W

Original price was: $19.99.Current price is: $15.99.

🔘 BN46 4000mAh 3.85V | 🔋 Li-Polymer | 📱 Compatible with Redmi Note 8 / Note 8T / Redmi 7 / Note 6 18W

8 in stock

No PayPal account? 💳 Pay with credit/debit card | 🛡️ PayPal Buyer Protected
SKU: BN46 Category: Tags: , ,
📦 Shipping, Warranty & After-Sales Information (Click to expand ▼)

✅ Why Our Warranty Stands Out

Unlike marketplace sellers with short buyer protection windows, we handle claims directly — no automated disputes, no endless back-and-forth.

Compare✅ Qingsm Tech⚠️ eBay / AliExpress
Warranty Period90 days from delivery15-30 days from order confirmation
When It Starts📦 Upon delivery⚠️ Upon order confirmation (even before you receive it)
Claims HandlingWe do it directly — email usAutomated dispute system, seller dependent
After Window ExpiresStill can contact us for supportNo recourse, seller can ignore you

🔋 90-day warranty is the industry standard for replacement batteries. Batteries naturally lose capacity over time — this normal wear is not covered. Warranty applies to manufacturing defects only.

📦 Shipping Cost & Delivery Time (Economy Shipping from China)

📦 Note: Batteries are classified as hazardous goods and must be shipped via specialized channels, which may take slightly longer than standard couriers. Delivery times are estimates and may be affected by customs, weather, or other unforeseen circumstances. If your country is not listed in the table below, we are currently unable to ship batteries to that destination.

DestinationFreight (USD)Est. Delivery Time
United States$7.808–15 days
Canada$6.8018–30 days
Mexico$10.0030–60 days
Germany, France, United Kingdom, Greece$6.5018–30 days
Ireland, Austria, Belgium, Poland, Denmark, Switzerland, Portugal, Norway, Slovakia, Spain, Hungary, Italy, Czech Republic, Luxembourg, Netherlands, Sweden, Cyprus$8.0018–30 days
Croatia, Finland, Lithuania, Latvia, Slovenia$8.0030–50 days
Romania$14.0030–50 days
South Korea, Japan, Australia, New Zealand, Israel, Malaysia, Singapore, Thailand, Philippines, Kazakhstan$7.5018–30 days
United Arab Emirates, Saudi Arabia, Vietnam, Chile, Peru, Colombia, Brazil$18.0025–60 days

🇧🇷 Note for Brazil: Brazilian customs can occasionally cause delays of up to 80 days or more. And please indicate the recipient's CPF, as it is required for Brazilian customs and shipping. Thanks! We appreciate your understanding.

🔋 Can't find your battery model? Use our FREE Battery Lookup Service – tell us your device and we'll find a match within 24 hours. 👉 battery.qingsm.tech/find-my-battery

Description

✅ Condition: Brand New – Never used, factory-tested quality

✅ CE / RoHS / UN38.3 Certified

✅ 90-Day Warranty from delivery – Longer coverage than major platforms

✅ Ships in 3-7 days with tracking

🛡️ Shipping Protection Available at Checkout

✅ PayPal Buyer Protection included

✅ 100% Compatibility Guarantee – If it doesn’t fit, we’ll refund you. No questions asked.

⚠️ Low Stock Alert: Only 8 left in stock. Order now to avoid waiting.

Battery model: BN46
Capacity: 4000mAh (Typical) / 15.4Wh
Rated voltage: 3.85V
Charge limit voltage: 4.4V
Battery type: Li-Polymer / Li-ion
Compatible with: Redmi Note 8, Redmi Note 8T, Redmi 7, Redmi Note 6, Redmi 8A
Replaces OEM part number: BN46
Package include: 1 x battery
Restore the battery life of your Redmi smartphone with this BN46 4000mAh replacement battery. Compatible with Redmi Note 8 (released August 2019, featuring a 6.3-inch FHD+ display, Snapdragon 665 processor, and 48MP quad camera), Redmi Note 8T, Redmi 7 (March 2019, 6.26-inch HD+ display, Snapdragon 632, 4000mAh battery), and Redmi Note 6 (November 2018). All these devices feature a 4000mAh battery — delivering reliable all-day power for extended usage. This Li-Polymer battery delivers the factory-rated 4000mAh capacity for full-day usage, keeping you powered through calls, browsing, and media playback.
Built with high-quality Grade A Li-Polymer cells and multi-layer safety protection against overcharge, over-discharge, short circuit, and overcurrent. CE, RoHS, and UN38.3 certified for safe transport and use. The BN46 battery is equipped with a modern controller that protects your phone from overdischarge and overcharging, ensuring reliability and durability for daily use. The battery supports 18W fast charging (Redmi Note 8 / Note 8T) and 10W standard charging (Redmi 7). Li-Polymer technology offers no memory effect, allowing you to charge at any time without affecting battery lifespan.
Compatibility Note: Please power down your device and check your original battery label before ordering. Ensure the model number printed matches BN46. This battery is compatible with Redmi Note 8 (M1908C3JG), Redmi Note 8T, Redmi 7, Redmi Note 6, and Redmi 8A. Important: If your device has a slightly different battery model (e.g., BN48 for Note 6 Pro), please confirm compatibility. Professional installation is recommended as these models have sealed back covers with permanent adhesive.
Battery Care Tips: Avoid full discharge — keep battery level above 20%. Do not expose to high temperatures or direct sunlight. New batteries require 3-5 full charge cycles to reach optimal capacity. For best 18W fast charging performance, use the original charger that came with your phone (5V/3A, 9V/2A, or 12V/1.5A). If you don’t use the battery for a long time, store it in a dry and cool place and charge it fully once every three months. If you notice swelling or overheating, stop use immediately.

Discover more from Battery.qingsm.tech

Subscribe to get the latest posts sent to your email.

Reviews

There are no reviews yet.

Be the first to review “BN46 4000mAh 3.85V Li-Polymer Replacement Battery for Redmi Note 8 / Note 8T / Redmi 7 / Note 6 18W”

Your email address will not be published. Required fields are marked *
To receive the "Verified Owner" badge, please use the same email address you used when placing your order.

Frequently Asked Questions

The BN46 battery for Redmi Note 8 is compatible with Redmi Note 8 (M1908C3JG), Redmi Note 8T (M1908C3JH), Redmi 7 (M1810F6LG, M1810F6LH, M1810F6LI), Redmi Note 6 (M1806E7SG), and Redmi 8A. The Redmi Note 8 was released in August 2019 featuring a 6.3-inch FHD+ display, Snapdragon 665 processor, and 48MP quad camera. The Redmi 7 was released in March 2019 featuring a 6.26-inch HD+ display and Snapdragon 632. This 4000mAh battery for Redmi Note 8 is a direct replacement for the original BN46 battery. Important: Some Redmi Note 6 devices may use BN48 battery — check your original battery model before ordering. If your battery replacement is needed because the phone drains quickly or won't hold a charge, this is the correct BN46 battery. Please verify your device model and check the battery model BN46 printed on your existing battery before purchasing.

The BN46 4000mAh 3.85V battery has a typical capacity of 4000mAh (15.4Wh) and a rated voltage of 3.85V. Charge limit voltage is 4.4V. It is a Li-Polymer / Li-ion battery built with Grade A cells and is CE, RoHS, and UN38.3 certified. The Redmi Note 8 and Note 8T support 18W fast charging via USB-C — the original charger outputs 5V/3A, 9V/2A, or 12V/1.5A (QC3.0 compatible). The Redmi 7 supports 10W charging (5V/2A) via micro-USB. This BN46 Redmi Note 8 battery features no memory effect, allowing charging at any time without affecting lifespan. It is equipped with a modern controller that protects the phone from overdischarge and overcharging, ensuring reliability and durability for daily use.

Professional installation is strongly recommended for Redmi Note 8 battery replacement. The Redmi Note 8, Note 8T, Redmi 7, and Redmi Note 6 all have sealed designs with permanent adhesive securing the back cover. The process to replace BN46 battery in Redmi Note 8 requires heating to soften adhesive and careful prying to avoid damaging the display or back cover. The Redmi 7 includes a 4000 mAh battery with permanent adhesive, making repair and replacement more challenging for DIY. The phones have no official IP water resistance rating, so water seal maintenance is not a concern after replacement. If you choose DIY phone battery replacement, watch a full teardown tutorial before starting, use a heat gun at low temperature (no more than 70°C), use plastic tools to avoid damaging internal components, and never reuse a battery after removal. Third-party repair shops typically charge $15-30 for labor.

Related products

✅ Ready to order?

This battery is in stock and ready to ship within 3-7 days. 90-day warranty included.

👉 Add to Cart Now