Xiaomi uses 5000mAh battery in most phones, and it has used up to 120W fast charging in its latest phones like the Redmi Note 13 Pro+ for the Indian market, and the Redmi K70 Ultra which was introduced in China recently uses a 5500mAh battery with 120W fast charging that can be charged up to 100% in 24 minutes.
According to leaker Digital Chat Station, the company is testing phones with 5500mAh, 6000mAh, 6500mAh, 7000mAh and even 7500mAh with 100W or 120W fast charging.
| Battery | Fast Charging | Full charge in |
| 5000mAh | 120W | 18 minutes |
| 5500mAh | 100W | 34 minutes |
| 6000mAh | 120W | 30 minutes |
| 6500mAh | 100W | 49 minutes |
| 7000mAh | 120W | 40 minutes |
| 7500mAh | 100W | 63 minutes |
OnePlus recently introduced the Ace Pro smartphone with a 6100mAh (typical) battery with 100W SuperVOOC fast charging that can be fully charged in 36 minutes.
Battery technology is evolving in a rapid pace. Several companies such as OnePlus and HONOR have started using silicon-carbon negative electrode battery that offer high energy density in a small size. However, several companies are limiting the charging to 100W or 120W after trying 150W in some phones.