DJI Inspire 1 - Battery Heater Part no 15 The performance of your Inspire 1's Intelligent Flight Battery is subject to environmental factors.Low temperature will have adverse effect on the performance of Inspire 1 Intelligent Flight Battery.The Inspire 1 Battery Heater helps to exert the optimum battery performance by heating the battery to a more suitable temperature (above 5 C C) before flight, enable the users flying their Inspire 1 in a more reliable way.Insert the Intelligent Flight battery into the Battery Heater compartment before take-off, as it requires a tiny proportion of power from the flight battery to pre-heat.Tech Spec Recommended Usage Temperature: -20 C C to 5 C C Heating Range: 30C C+- 5 C C Power: no more than 41.5W Input Voltage: 18-26.1V, DC Input Amperage: no more than 1.6A Dimension: 62mm x 99mm x 115mm Using the Battery Heater 1.Ensure the battery is fully charged and powered off.Insert the battery into the Battery Heater compartment.2.Turn the battery on and allow it to warm for 10-15 minutes (Actual operation time is subject to environment temperature.Longer or shorter times maybe required).Do not leave the battery unattended for extended period of time.3.Turn the battery off and leave it in the Battery Heater for an additional 5 minutes (Actual operation time is subject to environment temperature.Longer or shorter times maybe required).The Intelligent Flight Battery is now ready for use.Notice: A 3-stage overheat protection mechanism has been incorporated into the Battery Heater's design to prevent the battery from reaching temperatures that exceed its design parameters.To ensure that the battery does not overheat, the heater will be automatically deactivated at temperatures exceeding 30 C C, with additional failsafe barriers in place at 50C C and 98 C C.