> For the complete documentation index, see [llms.txt](https://docs.inspiredflight.com/inspired-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.inspiredflight.com/inspired-documentation/products/aircraft/if1200/if1200-batteries/operation/flying-with-the-if1200-batteries.md).

# Flying with the IF1200 Batteries

## Before Flight

#### Preflight Checks

Check the following things before flying with any IF1200 battery:

* Check the charge level. Both batteries should have sufficient remaining charge for flight and should be at similar charge levels (within 10% of each other).
* Ensure no error warnings are present. These are displayed as triangular lights on top of the battery. Consult the [Battery Status LEDs](/inspired-documentation/products/aircraft/if1200/if1200-batteries/overview/battery-status-leds.md) page for more information.
* Ensure the batteries aren’t leaking, bulging, or damaged. 
* If the battery has been in a low temperature environment (below 5ºC/41ºF) prior to use, preheat the battery by charging or discharging with a small current to above 5ºC/41ºF (nominal temperature is 20ºC/68ºF).

#### Safety

{% hint style="danger" %}

#### <mark style="color:red;">**DO NOT**</mark>

* Let the battery connectors contact metal or carbon fiber, or any other conductive material that may cause short circuiting. &#x20;
* Short or reverse the positive and negative electrodes.
* Disassemble/reassemble a battery on your own.  This is dangerous and could cause harm or fire. &#x20;
* Over-discharge the battery.  Single cell voltage should not be lower than 3.3V.  Over-discharge will cause damage to the battery, such as puffing or bulging. &#x20;
* Allow the electrolyte to get on your skin or in your eyes.  Flush affected areas with water and seek medical attention.
  {% endhint %}

## Installing onto The Aircraft

For Step-by-step instructions for how to install batteries onto the IF1200, visit the [Installing Batteries](/inspired-documentation/products/aircraft/if1200/operating-the-aircraft/installing-batteries.md) page in the aircraft section.

## During Flight

#### Low Power Failsafe

When the batteries reach low power, the aircraft will automatically attempt to return to home or land in place.

<table><thead><tr><th width="103.3333740234375">Failsafe Name</th><th width="130.6666259765625">Approx Batt Percentage</th><th width="198.6666259765625">Failsafe Action</th><th width="331">Condition for Activating</th></tr></thead><tbody><tr><td>Low Battery</td><td>22%</td><td>Return-to-Home (RTH)</td><td>One or both batteries report less than 3500mAh remaining during flight</td></tr><tr><td>Critical Battery</td><td>12.5%</td><td>Land in Place</td><td>One or both batteries report less than 2000mAh remaining during flight</td></tr></tbody></table>

{% hint style="info" %}
Both of these failsafe actions are triggered for each battery. If the Return-to-Home (RTH) procedure is canceled after activation by the first battery, it will be reinitiated when the second battery reaches 3,500 mAh.
{% endhint %}

#### Safety

{% hint style="danger" %}

#### <mark style="color:red;">**DO NOT**</mark>

* Pull the battery charge/discharge cable while the aircraft is powered on.
* Do heavy duty operations when first starting use of a cold battery.  Allow the battery to reach normal operating temperatures before hard use. &#x20;
* Over-discharge the battery.  Single cell voltage should not be lower than 3.3V.  Over-discharge will cause damage to the battery, such as puffing or bulging. &#x20;
  {% endhint %}

{% hint style="info" %}
For more information on battery safety and handling, consult the manufacturer's material safety datasheet linked below
{% endhint %}

{% file src="/files/KAJksTXba1yBfsTNCiOX" %}
Manufacturer Material Safety Data Sheet
{% endfile %}