In a calm environment, the maximum flight time can reach up to 38 minutes.

The EVO II Dual 640T was specifically built to serve industries and applications in public safety, inspection, search & rescue, fire response and law enforcement.

2-20 meters.

±3℃ or ±3% of reading (whichever is greater) assuming ambient temperature -20℃~60℃.

1. Do not expose the battery to temperatures below -10°C or above 40°C as this will shorten the battery life and may cause fire, explosion or other permanent damage.
2. Do not charge immediately after flight; it is recommended to charge the battery after it drops to room temperature.
3. The ideal charging environment temperature of the battery is 10 °C – 30 °C;
4. The ideal storage environment temperature of the battery is 22 °C – 28 °C. When storing the battery, the surroundings should be clear from water and moisture, and must avoid sunlight.
5. Recharge and discharge the battery approximately every 3 months to keep the battery active.