https://github.com/Koenkk/zigbee2mqtt/issues/19559

ext.js

const fz = require('zigbee-herdsman-converters/converters/fromZigbee');
const tz = require('zigbee-herdsman-converters/converters/toZigbee');
const exposes = require('zigbee-herdsman-converters/lib/exposes');
const reporting = require('zigbee-herdsman-converters/lib/reporting');
const legacy = require('zigbee-herdsman-converters/lib/legacy');
const extend = require('zigbee-herdsman-converters/lib/extend');
const ota = require('zigbee-herdsman-converters/lib/ota');
const tuya = require('zigbee-herdsman-converters/lib/tuya');
const utils = require('zigbee-herdsman-converters/lib/utils');
const globalStore = require('zigbee-herdsman-converters/lib/store');
const e = exposes.presets;
const ea = exposes.access;

const definition = {
    zigbeeModel: ['lumi.magnet.agl02'],
    model: 'MCCGQ12LM',
    vendor: 'Xiaomi',
    description: 'Aqara T1 door & window contact sensor',
    fromZigbee: [fz.xiaomi_contact, fz.aqara_opple, fz.ias_contact_alarm_1, fz.battery],
    toZigbee: [],
    meta: {battery: {voltageToPercentage: '3V_2850_3000'}},
    exposes: [e.contact(), e.battery(), e.battery_voltage()],
    ota: ota.zigbeeOTA,
    configure: async (device, coordinatorEndpoint, logger) => {
        const endpoint = device.getEndpoint(1);
        await reporting.bind(endpoint, coordinatorEndpoint, ['genPowerCfg']);
        await reporting.batteryPercentageRemaining(endpoint);
    },
};

module.exports = definition;