DJI Air 2S battery charge time and LED flashing patterns

The DJI Air 2S has an intelligent flight battery with smart charging and discharging functionality to keep it safe. The 11.55 V, 3500 mAh battery provides up to 31 minutes of maximum flight time with no wind.

According to DJI, the DJI Air 2S intelligent flight battery will be charged fully in one hour and 40 minutes. You can use the charging adapter or charging hub to charge the batteries, providing up to 31 minutes of flight time.

How to determine if your batteries are fully charged

There are a couple of ways to determine the charge status of your intelligent flight batteries, including pressing the power button, looking at the four LED elimination patterns, connecting the battery to the drone, and using the fly app to gather information about the battery’s status.

When not in the drone

When the battery is not in the drone, you can press the power button once to check the battery level.

Here are the different flashing patterns of the four LEDs in the intelligent flight battery and what they tell you about the battery level.

When in the drone

When the battery is connected to the drone, you can press the power button once and then press it again, holding it for two seconds to power the battery on and off.

The battery LEDs will display the battery level when the aircraft is powered on.

In the Fly App

The top right area of the fly app will display the current battery level as well as the remaining flight time. You can tap the battery information to view more about the battery condition and flight time.

Charging the Air 2S battery

To charge the battery, you must use the provided DJI charger or the hub accessory.

  1. Connect the AC power adapter to an AC power supply
  2. Attach the intelligent flight battery to the power adapter using the battery charging cable with the battery-powered off.
  3. The battery level LEDs will display the current battery level during charging
  4. Charging is completed when all the battery LEDs are off, and you may detach the charger.

While charging, the LEDs will light up, and this is the battery level during charging:

Warnings when charging the battery

Do not charge the battery when:

  • You have just removed the flight battery after a flight. Wait for the flight battery to cool down to room temperature before charging. Flying the drone will cause the battery to heat up.
  • The ideal temperature for charging is between 22°C and 28°C (71.6°F to 82.4°F).
  • You can charge up to 3 batteries using the charging hub. However, for the initial charging of the batteries it is recommended that you directly connect them to the adapter.
  • Charge the batteries at least once every three months to maintain battery health
  • do not use any third-party chargers to charge the drones.
  • It is recommended that you discharge the batteries to 30% or lower before transportation. This can be achieved by flying the aircraft outdoors until there is less than 30% charge left.

How long will the Air 2S battery last?

The DJI Air 2S battery will last up to 31 minutes of flight time or a maximum hovering time of 30 minutes with no wind.

You will be able to fly up to a maximum distance of 18.5 km on a full charge

 

Air 2S intelligent flight battery features

The DJI Air 2S intelligent flight battery has amazing features to keep itself safe. These include:

LED indicators to display the current battery level

You can easily see the current battery level by pressing the power button and looking at the number of LEDs illuminated. The battery level is greater than 88% if all four LEDs are on. If only one LED is flashing, the battery level is lower than 13%.

An auto discharge function

the auto discharge function prevents swelling and automatically discharges the battery to 96% of the battery level when it is left to sit outside a drone for more than one day. When the battery is left outside the drone for more than five days, the battery will automatically discharge to 60%.

DJI notes that it is normal to feel a small amount of warmth being admitted during discharging. This warmth is how the battery gets rid of some of its energy.

Balanced charging

The intelligent software in the battery balances the battery cells so that they are all equally charged, and the voltages are balanced.

Overcharge and current protection

The intelligent flight battery will stop charging automatically once the full capacity of the battery has been reached.

Temperature detection

The battery will only charge when the temperature is between 5° C and 40° C (41°F and 104°F). Keeping the battery safe involves closely monitoring the temperature to remain as stable as possible.

We are pumping a lot of energy into these batteries, and a temperature rise is the first sign that something is going wrong.

You may also need to wait a little while before charging your battery after a flight because the discharging causes heat to accumulate.

Over-discharge protection

This support mechanism stops the battery from discharging too much if left idle. Over-discharge protection is not enabled when the batteries are in use, and you can run the battery to 0 while flying.

Short circuit protection

If a short-circuit is detected, the drone battery will automatically cut the power supply. Short circuits can spark fires because of extreme heating in a drone battery.

Battery cell damage protection

The DJI fly app will warn when a damaged battery cell is detected. You should land as soon as possible after this warning if you are flying. A damaged battery cell can cause the other cells to overheat due to the extra load and work required on the remaining functional batteries.

Hibernation mode

The battery will turn off 20 minutes after inactivity to save on power. If the battery level is less than 5%, the battery will enter hibernation mode to prevent over-discharging after being left for six hours.

In hibernation mode, the intelligent smart battery will not wake up when the battery power button is pressed, and the battery level indicators will not eliminate. To wake up the battery from hibernation mode, you should charge it using the cable provided.

Communication

The battery will continually transmit information about the voltage, capacity, and current to ensure safe and efficient use during operation.

Battery protection mechanisms

you will notice that the battery LED indicators will blink in different patterns should there be an issue with the battery. Abnormal charging conditions often trigger this.

Here is a rundown on what is happening should the LEDs be blinking.

If the battery protection mechanism is activated, unplug the battery from the charger and plug it in again. If you notice that the charging temperature is abnormally high, wait for the battery to return to room temperature before resuming charging.

Summary

This article has covered the DJI Air 2S battery charge time and all of the important battery information you need to know to ensure that your DJI air 2S intelligent flight battery is protected before, during, and after flying.

The more stringent you look after your battery, the longer it will last.

The Author

Dr Andrew Stapleton is a writer and YouTuber with a PhD in science. His drone footage has been featured on TV and he has written and/or produced videos for Science Alert, COSMOS magazine, and Australia's Science Channel among others. He has been a drone pilot for many years and has flown many types of drones. His favourite is still the DJI Mavic Air for the portability and functionality packed into a small and portable drone!