How far does an airpod have to be to be still connected to the phone and say its on lowbattery. I lost my pair and I can’t find it but it notifies me that it’s on low battery.

Hey there, and welcome to Apple Support Communities yourin,

We can certainly understand your concern and see you came to us from the article Charge your AirPods and learn about battery life.

To answer your question, the iPhone must be within about 33 feet (10 meters) of the Bluetooth device. Check out the information below for more details and how to setup headphones.

" Set up and use Bluetooth accessories on iPhone

Using a Bluetooth connection, you can use third-party devices such as wireless keyboards, headphones, speakers, car kits, game controllers, and more with iPhone.

Note: iPhone must be within about 33 feet (10 meters) of the Bluetooth device.

Pair a Bluetooth headphone, car kit, game controller, or other device

1. Follow the instructions that came with the device to put it in discovery mode.

Note: To pair AirPods, see the instructions for your model in the “Pair and connect” section in the AirPods User Guide.

2. On iPhone, go to Settings  > Bluetooth, turn on Bluetooth, then tap the name of the device.

Note: With Siri Eyes Free (available in select cars), you can use your voice to control features of your iPhone without looking at or touching iPhone. Use Bluetooth to pair iPhone to your car (refer to the user guide that came with your car if you need to). To activate Siri, press and hold the voice command button on your steering wheel until you hear the Siri tone, then make a request. "

For additional information, check out this link: Set up and use Bluetooth accessories on iPhone - Apple Support

These steps will help ensure your device is working with ease and can answer common questions like the ones you’re inquiring.

Kindest regards!