Get Bluetooth Names & Charges from MenuBar

@Nicolas_Aparicio, I've got a couple of ways for you.

Scraping the UI

This first one is continuing the UI approach you started. It's not very sexy since it needs to open the menu to get the data and feels fragile since I'm relying on the menu to show up in one particular place, so it might not work on other systems or versions of macOS (I'm on Ventura).

function getBluetoothDevicesViaUi() {
    const controlCenterApp = sf.ui.app('com.apple.controlcenter');
    const extrasMenuBar = controlCenterApp.getElement("AXExtrasMenuBar");

    const bluetoothMenu = extrasMenuBar.children.find(item =>
        item.getString('AXDescription') === 'Bluetooth'
    );

    if (!bluetoothMenu) return;

    bluetoothMenu.elementClick(); // Open Bluetooth menu

    const menuSearchPosition = {
        x: bluetoothMenu.position.x - 200,
        y: bluetoothMenu.position.y + 90
    };

    const popupMenu = controlCenterApp.getElementAtPosition(
        menuSearchPosition.x,
        menuSearchPosition.y
    );

    const bluetoothDevices = popupMenu.children.whoseRole.is("AXCheckBox")
        .map(checkbox => checkbox.getString('AXDescription'));

    bluetoothMenu.elementClick(); // Close Bluetooth menu

    return { bluetoothDevices };

}

const bluetoothDevices = getBluetoothDevicesViaUi().bluetoothDevices;

log(bluetoothDevices);

// Returns this 👇🏼
[
    "Magic Keyboard, 69%",
    "MX Vertical, 100%",
]

• Pros: Gets you all the devices on the list along with the battery charges
• Cons: Fragile execution

Getting it through Bash

This one gets it straight from the system, although verbose.

After kicking the ball back and forth with chatGPT, here's what we got:

function getBluetoothDevices() {
    /** @param {string} bluetoothDevicesText */
    function parseConnectedDevices(bluetoothDevicesText) {
        const devices = {};
        const lines = bluetoothDevicesText.split(/ {9}/);

        let currentDevice = null;

        lines.forEach(line => {
            // Trim leading/trailing whitespace
            const trimmed = line.trim();

            // Skip empty lines and "Connected:"
            if (!trimmed || trimmed === 'Connected:') return;

            // Check for device name (e.g., "Magic Keyboard:")
            if (trimmed.endsWith(':') && !trimmed.includes('Address')) {
                currentDevice = trimmed.slice(0, -1); // Remove trailing colon
                devices[currentDevice] = {}; // Initialize the device object
            } else if (currentDevice) {
                // Parse key-value pairs (e.g., "Address: B0:BE:83:F3:56:96")
                const [key, ...valueParts] = trimmed.split(':');
                if (key && valueParts.length > 0) {
                    devices[currentDevice][key.trim()] = valueParts.join(':').trim();
                }
            }
        });

        return devices;
    }

    const bluetoothDevicesText = sf.system.exec({
        commandLine: `system_profiler SPBluetoothDataType | awk '/Connected:/{flag=1} /Not Connected:/{flag=0} flag'`
    }).result;


    const bluetoothDevices = parseConnectedDevices(bluetoothDevicesText);

    return { bluetoothDevices };
}

const bluetoothDevices = getBluetoothDevices().bluetoothDevices;

log(bluetoothDevices);

// Returns this 👇🏼
{
    "Magic Keyboard": {
        "Address": "B0:BE:83:F3:56:96",
        "Vendor ID": "0x004C",
        "Product ID": "0x029F",
        "Firmware Version": "2.0.6",
        "Minor Type": "Keyboard",
        "Services": "0x800020 < HID ACL >"
    },
    "MX Vertical": {
        "Address": "E1:45:3B:86:56:3D",
        "Vendor ID": "0x046D",
        "Product ID": "0xB020",
        "Battery Level": "100%",
        "Firmware Version": "MPM16.00_0009",
        "Minor Type": "Mouse",
        "Services": "0x400000 < BLE >"
    }
}

• Pros: Transparent fetching of data.
• Cons: For some reason it doesn't provide battery level for all devices.

Pick your poison!