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DJI › Safety Tips for Flying in Cold Weather
12-11-2015 03:04 AM  35 months agoPost 1
DJI Innovations

rrApprentice

Shenzhen, China

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Flying DJI aircraft in winter can be fun, but bear in mind that as the temperature drops, so does the battery’s performance. It has come to DJI’s attention that several of our users have experienced issues when flying in cold weather. These issues include sudden drops in battery voltage, motor output overload and, in some cases, even crashing the aircraft. In response, we urge users to read the following tips to ensure flight safety when flying in cold weather.

The Intelligent Flight Battery contains a Li-Po battery cell. The performance of the Li-Po battery cell is subject to ambient temperature so that the battery drains significantly faster at cold temperatures (59°F or 15°C). When the Intelligent Flight Battery is placed in cold environments, the chemical reactions within the battery cell are subdued, leading to increased resistance and eventually a significant drop in battery voltage. The drop in battery voltage (below 3V per cell) contribute to two major risks. Firstly, the propulsion system on the aircraft can suffer from lack of thrust due to the low voltage. Secondly, the battery will automatically shut off because the over-discharge protection will have taken effect. This is a known limitation to all Li-Po batteries and many mobile devices that use Li-Po batteries also have the same issue. Note that you might not be able to use your mobile device at cold temperatures for the same reason.

Aircraft such as the Inspire 1 and Inspire 1 Pro require more power to sustain flight and carry out maneuvers such as climbing at high speeds. At high altitudes where air pressure is low, the motors on the aircraft will rotate faster in order to produce enough lift. Consequently, even more power output is required and the battery voltage will be more likely to drop to an extremely low level, triggering over-discharge protection. Therefore, we strongly recommend that users charge the battery to 100% in order to prevent over-discharge protection from triggering.

Follow the tips bellow when you are flying the aircraft:

1. Fully charge the battery before each flight.
2. Allow the battery to warm up to 25°C or more. It is recommended to use the Battery Heater to warm up the battery.
3. Hover the aircraft for about a minute to allow the battery to warm up.
4. Use the 1365S propellers when flying the aircraft at high altitudes.

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