Let's look at one of the phone's power elements. Xiaomi using the model as an example BN41.
This is a relatively small, lightweight, and easy-to-charge battery with no memory effect. It offers an average battery life of 2-3 years, with over 600 charge cycles. It offers excellent value for money. This Redmi battery supports fast charging, charging up to 60% in 30 minutes. In standby mode, this battery lasts up to 137 hours. Charge the battery frequently rather than waiting until it's completely discharged.
The manufacturer is a young Chinese company, Xiaomi, which appeared in 2011. It entered the consumer markets not long ago, but has already managed to gain popularity in various countries.
Redmi Note 4 battery specifications
The table below shows the main parameters.
| Model | BN41 |
| Limited charge voltage | Limited charging voltage 4.4V |
| Rated Capacity | Nominal power: 4100 mAh / 15.79 Wh |
| Raited Voltage | Nominal voltage 3.8 V |
| Maximum voltage | Maximum voltage 4.40 V |
| Li-ion Polymer Battery | Li-Pol (lithium polymer); |
| Warning:Do not disassemble, heat, crush, puncture, orburn. | Warning: Do not disassemble, heat, crush, puncture or burn. |
| Xiaomi Corporation | Manufacturer |
| Made in China | Made in China |
| Battery dimensions, mm | 79.30*66.30*4.20 |
| Form | Rectangular |
| Color | Black |
| Texture | Smooth, no stickers |
| Battery type | Non-removable |
The price range for this battery varies depending on the seller, but averages between 350 and 1,200 rubles. Original batteries are often more expensive because they require tools for replacement.
A specialist will remove the battery skillfully without damaging the phone, so don't skimp on this.
Following all the rules for operating the battery will increase the quality and duration of use.








