Xiaomi BM21 Excellent Quality Battery Replacement - Li-ion 2900mAh/11.1WH Battery
- In Stock! ETA: 3-7 business days!
- Brand New
- Reinforced, High performance, No memory effect
- Full 12 Months Warranty and 30 Days Money Back
This Xiaomi BM21 battery replacement using Li-ion technology to make the battery longer life.
Reasonable price and satisfied shopping experience by buying the BM21 replacement battery with one year warranty.
All of our batteries were certified by CE, UL, ROHS, ISO9001/9002 for safety, you can buy with confidence!
Thank you for purchasing this high quality replacement Xiaomi batteries BM21 Battery at Batterysg.net. All our high quality replacement batteries for Xiaomi batteries BM21 have been tested and proven to match or exceed original Xiaomi battery performance and are 100% compatible with Original Manufacturer Specifications.
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We operate a fair and open after-sales service. Over 99% of our orders are handled perfectly – goods are delivered on time and work without fault. We aim to offer a service most other online retailers fail to deliver on: Product availability, value, reliable delivery and a clear and fair after-sales service.
30-Day Money Back Guarantee
Our goal is to turn customer satisfaction into ‘Complete Customer Satisfaction’. That's why we offer you a 30-day money back guarantee!
Please note: in order to qualify to get your money back, you must first contact us and await instructions before sending back your product.
All our high-quality backup batteries or adapters have a 1-year warranty. If the purchaser has installed the product in the device and used it correctly, the warranty applies.
Compatible Part NumbersBM21
Compatible Model Numbers
XiaoMi Redmi Note Mi Note
If the capacity is low in current,CPU will be in electricity-saving model and battery can not be charged.In this case,take off the battery and fit on to rouse the CPU. The BM21 battery can be charged then.
Remove the battery when don't use if for long time,or the currency will be lost and the cell will be damaged.
Recharge the battery as the circle more than once per month to make the management of capacity reach its best status, and prolong Xiaomi BM21 Smartphone Battery useful life.
Q: Does your replacement Xiaomi BM21 battery compatibles with my original Xiaomi BM21 battery?
A: 100% OEM compatible, guaranteed to meet the specifications of your original Xiaomi BM21 battery (ensue same size & high quality). And all our batteries for Xiaomi BM21 have obtained international certification( CE, UL, ROHS, ISO9001/9002 ).
Q: How to Remove Replace Install and Upgrade your Xiaomi BM21 Smartphone Battery?
A: 1. Turn your Xiaomi BM21 laptop over.
2. Find the laptop battery release button lock for your Xiaomi BM21 laptop.
3. Now that your Xiaomi BM21 Smartphone Battery is unlocked, find the battery release button down.
4. Holding the Smartphone Battery release button, gently pull your battery away from the laptop.
5. Now that your Xiaomi BM21 battery is removed, grab your replacement Xiaomi BM21 battery for installation.
6. Insert the battery into the slot. Push the Xiaomi BM21 battery towards the laptop and secure it in place.
Q: Does overcharging damage the battery for Xiaomi BM21 laptop?
A: Overcharging can create excessive heat which bends the plate within the cells and shed active material then results in the capacity loss.
Q: How to extend the life of the battery for Xiaomi BM21 laptop?
A:1. A new battery comes in a discharged condition and must be charged before use. Upon initial use (or after prolonged storage period) the battery may require two or three charge/discharge cycles to achieve maximum capacity.
2. If the Xiaomi BM21 Smartphone Battery is not going to be used for more than a month, it is recommended that it be removed from the device and stored in a cool, dry, clean place.
3. A battery will eventually lose its charge if unused long time. It is necessary to fully recharge the battery after a storage period.
4. The battery for Xiaomi BM21 laptop healthy by fully charging and then fully discharging it at least once every two to three weeks. Exceptions to the rule are Li-Ion batteries which do not suffer from the memory effect.
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Currently, all of our shipments are through Priority Mail (EMS USPS),if you are dealer,you can selected others .We can not offer Overnight (UPS Red) and 2nd Day Delivery (UPS Blue) .
2.Shipping & Handling
Free Shipping on All Orders!
All orders placed for Standard Shipping on all stock items will be shipped within 1-2 business days.
Estimated Delivery Time:3-7 Business Days
It is very easy for you to check the status of your order and locate the package during transit, as an email with a tracking number will be sent to your email address after your order has been shipped out. Tracking number will be emailed to buyer once your ordered item is shipped out.
Shipping rates: Our rates include the expenses of shipping, handling and the high quality packaging.
Attention: Priority mail will be used for all PO Box shipping addresses ,But All APO's and military addresses do not apply here. Please use standard shipping for these. Thank you.
Find right battery for your laptop
Different laptops have different models of batteries and it thus becomes essential to buy the right replacement battery that fits into your laptop. The first thing you need to know is your laptop model or the battery model. We always recommend to our customers to provide the battery model number or the battery part number to avoid purchasing a wrong battery. Providing the correct information is essential to get the correct battery and the battery mode number of the laptop model number is different for each brand. It’s a bit confusing what exactly to look when you don’t have any technical knowledge. However at Batterysg.net our friendly staff always happy to help our valued customers to choose right battery for their laptop.
We have described some common methods to identify your battery model or the laptop model. By following below methods you can find correct part number for your laptop battery.
Battery model number (Recommended)
Try to locate the model number on the laptop battery. Different laptop brands have different terms and displayed in different locations however you will be able to find it because the battery model number will be in big bold letters. In some brands model is spelled as a module.
E.g. PA3534U-1BRS, AS07A71
Battery HSTN number, type number or the spare number
This method is common with HP, Dell and MacBooks. You would need to find the battery HSTNN number or the Battery type number or the spare number.
E.g. HSTNN-LB40, Type J1KND, HP replace spare number 484171-001
Lenovo T430s screen
On some brands you can’t and any information or a model number on the back side of the laptop. If you are having the same troubles try to locate the model number on your laptop keyboard or the screen frame area. In most cases you will be able to find something big and bold.
E.g Lenovo T430, Dell Studio 1535
Laptop model (For Advanced users)
Dell dos mode screen
We don’t recommend this option if don’t have good computers skills. To find your model from the laptop you would need to go to Dos mode before boot up the PC. Then you can locate a Tab called “Information” or “About” to find the model number. Some brands will display the model or the series number before the windows welcome screen.
e.g. Power Edge M710, Dell Studio 1735
Once you find the model number of your laptop battery you can easily purchase a replacement battery for your laptop
You can contact us and our friendly staff will help you to find right battery for your laptop.