How long does Xiaomi razor charge: a full guide to the models of 2020-2026

Introduction: Why does Xiaomi razor charging time vary?

Xiaomi electric shavers are some of the most popular on the market, thanks to a combination of price, functionality and design. But even these advanced devices have questions about operation, and the most common one is: how long does it take to fully charge? The answer is not as clear as it seems. Time depends on the model, battery type, battery status and even the charger.

For example, the flagship Xiaomi Mi Electric Shaver S500 with a lithium-ion battery charges in 2 hours, while the budget Mijia T300 can require up to 8 hours when using a non-original adapter. And if your razor is not new, time can increase by 30-50% due to the degradation of the batteries. In this article, we will analyze all the nuances from technical specifications to practical life hacks.

It's important to understand that the manufacturer always specifies charging times for the ideal conditions: new battery, original adapter, room temperature. In reality, there are many factors that affect the process, from the quality of the outlet to the frequency of use of the device. Next, we will analyze each model separately and give recommendations on how to minimize the idle time of the razor.

Official data: charging time according to Xiaomi models

The table below shows the latest data from the manufacturer for popular Xiaomi electric shavers (2020–2026). note that the values are for a full charge cycle of 0 to 100% using the original adapter.

Pay attention to two key points:

• 🔋 Battery type: Li-ion charges much faster than nickel-metal hydride (Ni-MH). T300 With Ni-MH, it takes 8 hours, whereas S500 with Li-ion, only 2.
• 🔌 Charging current: Type-C models (e.g, S500) support higher current (1A), Outdated connectors (Micro-USB or proprietary) are often limited to 0.3–0.5A.

⚠️ Note: If your razor is charging 30% or more longer than the time indicated in the table, this is a sign of battery degradation or using an unoriginal adapter.

Factors affecting charging speed

Even if you have a new Xiaomi razor with the original adapter, charging times may be different from passport values.

Type of charger

Using a non-original adapter is the most common cause of delayed charging.

• ⚡ The original adapter (5V/1A for S500): charge-up 2 hour.
• ⚡ Universal. USB-adapter (5V/0.5A): time will increase 3–4 hours.
• ⚡ Charging from PC/laptop (USB 2.0, 0.5A): up to 5 hours due to current restriction.

Critical error: Using adapters with voltages higher than 5V (e.g., from smartphones with fast charging 9V/12V) can disable the razor power controller.

Ambient temperature

Lithium-ion batteries are most effective at a temperature of 10–30°C. When deviations from this range:

• ❄️ 10 below°C: Chemical processes slow down, charging time increases by 20-40%.
• 🔥 Above 30.°C: Risk of overheating of the battery, which can lead to its degradation or even bloating.

💡

If the razor heats up during charging, disconnect it from the mains and let it cool for 15-20 minutes. Repeated overheating reduces battery life by 30% or more.

Condition of the battery

Over time, the battery capacity decreases, and after 300 to 500 charging cycles (about 2-3 years of use), you may notice:

• 🕒 Increased charging time by 30-50%.
• ⚡ Decreased autonomy (for example, instead of 90 minutes, the razor works 40-50 minutes).
• 🔄 The need to “swing” the battery (full discharge-charge) to restore capacity.

⚠️ Note: If the razor Xiaomi stopped holding the charge more 20 When the battery is damaged, it is a sign of critical battery degradation, and if it is not activated at all, it will require a replacement battery at the service center (cost for models). S500/T500 — near 1500–2000 ruble).

How to speed up charging of the Xiaomi razor: proven ways

If you need to get the razor ready for use quickly, use these methods. They are safe for the device and do not shorten the battery life.

Use the original 5V/1A| adapter

Charge at room temperature (20–25°C)|

Turn off the razor after reaching 80% (if urgently needed) |

Do not use the device while charging (this increases the time by 20-30%)-->

1. Optimization of the charger

As practice shows, the adapter from Xiaomi smartphone (for example, from Redmi Note 10 or POCO X3) with parameters 5V/2A accelerates charging razor S500 or T500 by 20-25%.

Example of compatible adapters:

• 📱 Xiaomi 18W Fast Charger (5V/3A, 9V/2A) — fit S500 (will charge on 5V/1A).
• 📱 Redmi 10W Charger (5V/2A) — The best option for most models.

2. Partial charging up to 80%

If you need a razor right away, but you don't have time to charge it, you can interrupt it by 80 percent, which is safe, because today's lithium-ion batteries don't have a memory effect.

• ⏱️ S500: 80% in 1 hour 20 minutes (instead of 2 hours to 100%).
• ⏱️ T500: 80% in 1 hour (instead of 1.5 hours).

3.Use of portable power bank

If you are on the way and need to urgently recharge the razor, you can use the power bank with the output of 5V/1A or 5V/2A.

• 🔋 Choose a power bank with a stabilized voltage (cheap models can give jumps that are harmful to the battery).
• 📱 Connect the razor directly, without adapters (they increase resistance).

💡

The fastest way to charge is to use the original 5V/1A adapter at a temperature of 20-25°C. Partial charging up to 80% saves up to 40% of the time.

Typical charging errors and how to avoid them

Many users make mistakes that not only increase charging time, but also shorten the life of the razor, and let's take a look at some of the most common ones.

1. Charging on the move

Using a razor while charging is one of the most harmful habits, and it leads to:

• 🔥 Battery overheating (temperature may exceed 40)°C).
• ⚡ Increased charging time by 30-50%.
• 🔋 Accelerated battery degradation (reduced life by 20-30%).

Storage in the discharged state

If you leave the razor discharged for a few weeks, the battery can become deeply discharged, which will lead to its irreversible damage.

• 🔋 40-60% – the ideal balance for long downtime (for example, if you do not use a razor for a month or more).

3. Use of damaged cables

Worn-out or twisted cables create additional resistance that:

• ⏱️ Increases charging time by 20 to 40%.
• ⚡ May cause short circuit (especially dangerous for Ni-MH batteries).

⚠️ Warning: If the cable is warming during charging or if it shows damage to the insulation, replace it immediately.

Comparison with competitors: who is charging faster?

For objectivity, we compare the charging time of Xiaomi razors with analogues from other brands in one price segment (data for 2026).

As you can see from the table, Xiaomi does not lead in charging speed, but offers the best ratio of charging time / autonomy. For example, the Philips S1121 charges in 1 hour, but only runs 60 minutes, while the S500 at 2 hours of charging provides 90 minutes of autonomy.

Benefits of Xiaomi razors in this context:

• 🔋 More capacious batteries (600 mAh vs 450-500 mAh for competitors).
• 🔌 Modern connectors (Type-C y) S500 against outdated proprietary from Braun).
• 💰 Lower price with comparable characteristics.

Frequently Asked Questions (FAQ)