diff --git a/kasa/httpclient.py b/kasa/httpclient.py
@@ -3,6 +3,7 @@
 from __future__ import annotations
 
 import asyncio
+import builtins
 import logging
 import ssl
 import time
@@ -144,7 +145,9 @@ async def post(
             raise _ConnectionError(
                 f"Device connection error: {self._config.host}: {ex}", ex
             ) from ex
-        except (aiohttp.ServerTimeoutError, TimeoutError) as ex:
+        # TimeoutError is imported from kasa.exceptions and shadows the builtin,
+        # which is what aiohttp raises when ClientTimeout(total=...) expires.
+        except (aiohttp.ServerTimeoutError, builtins.TimeoutError) as ex:
             raise TimeoutError(
                 "Unable to query the device, "
                 + f"timed out: {self._config.host}: {ex}",

diff --git a/kasa/protocols/smartprotocol.py b/kasa/protocols/smartprotocol.py
@@ -245,7 +245,16 @@ async def _execute_multiple_query(
                     batch_name,
                     pf(smart_request),
                 )
-            response_step = await self._transport.send(smart_request)
+            try:
+                response_step = await self._transport.send(smart_request)
+            except TimeoutError as ex:
+                # P300 does not respond to some batched requests (e.g. both child
+                # list requests together) so disable batching. Batch size is never
+                # 1 here as that case sends single requests above.
+                self._multi_request_batch_size = 1
+                raise _RetryableError(
+                    "Timeout during multi request, multi requests disabled"
+                ) from ex
             if debug_enabled:
                 if self._redact_data:
                     data = redact_data(response_step, REDACTORS)

diff --git a/tests/protocols/test_smartprotocol.py b/tests/protocols/test_smartprotocol.py
@@ -1,3 +1,4 @@
+import json
 import logging
 
 import pytest
@@ -9,6 +10,7 @@
     DeviceError,
     KasaException,
     SmartErrorCode,
+    TimeoutError,
 )
 from kasa.protocols.smartcamprotocol import SmartCamProtocol
 from kasa.protocols.smartprotocol import SmartProtocol, _ChildProtocolWrapper
@@ -235,6 +237,102 @@ async def test_smart_device_multiple_request_non_json_decode_failure(
     assert send_mock.call_count == 1
 
 
+async def test_smart_device_multiple_request_timeout(
+    dummy_protocol: SmartProtocol, mocker: MockerFixture
+) -> None:
+    """Test that a timed out multi request disables batching and retries."""
+    requests = {}
+    mock_responses = []
+    for i in range(10):
+        method = f"get_method_{i}"
+        requests[method] = {"foo": "bar", "bar": "foo"}
+        mock_responses.append(
+            {"method": method, "result": {"great": "success"}, "error_code": 0}
+        )
+
+    send_mock = mocker.patch.object(
+        dummy_protocol._transport,
+        "send",
+        side_effect=[TimeoutError("Simulated timeout"), *mock_responses],
+    )
+    mocker.patch("asyncio.sleep")
+    dummy_protocol._multi_request_batch_size = 5
+    resp = await dummy_protocol.query(requests, retry_count=1)
+    assert dummy_protocol._multi_request_batch_size == 1
+    assert resp == {method: {"great": "success"} for method in requests}
+    # Call count should be the timed out batch + number of requests
+    assert send_mock.call_count == len(requests) + 1
+
+
+async def test_smart_device_multiple_request_timeout_single_requests(
+    dummy_protocol: SmartProtocol, mocker: MockerFixture
+) -> None:
+    """Test that timeouts on single requests are still retried and raised."""
+    send_mock = mocker.patch.object(
+        dummy_protocol._transport,
+        "send",
+        side_effect=TimeoutError("Simulated timeout"),
+    )
+    mocker.patch("asyncio.sleep")
+    dummy_protocol._multi_request_batch_size = 1
+    with pytest.raises(TimeoutError):
+        await dummy_protocol.query(DUMMY_MULTIPLE_QUERY, retry_count=2)
+    assert dummy_protocol._multi_request_batch_size == 1
+    assert send_mock.call_count == 3
+
+
+async def test_smart_device_multiple_request_child_lists_timeout(
+    dummy_protocol: SmartProtocol, mocker: MockerFixture
+) -> None:
+    """Test devices that do not respond to batched child list requests.
+
+    The P300(EU) 1.0.7 firmware never answers a multipleRequest containing both
+    get_child_device_component_list and get_child_device_list, while each
+    request sent on its own succeeds.
+    """
+    child_list_methods = {"get_child_device_component_list", "get_child_device_list"}
+    results = {
+        "get_child_device_component_list": {
+            "child_component_list": [],
+            "start_index": 0,
+            "sum": 0,
+        },
+        "get_child_device_list": {
+            "child_device_list": [],
+            "start_index": 0,
+            "sum": 0,
+        },
+    }
+
+    async def _send(request: str) -> dict:
+        req = json.loads(request)
+        if req["method"] != "multipleRequest":
+            return {"result": results[req["method"]], "error_code": 0}
+        methods = {r["method"] for r in req["params"]["requests"]}
+        if child_list_methods <= methods:
+            raise TimeoutError("Simulated timeout")
+        return {
+            "result": {
+                "responses": [
+                    {"method": m, "result": results[m], "error_code": 0}
+                    for m in methods
+                ]
+            },
+            "error_code": 0,
+        }
+
+    send_mock = mocker.patch.object(
+        dummy_protocol._transport, "send", side_effect=_send
+    )
+    mocker.patch("asyncio.sleep")
+    assert dummy_protocol._multi_request_batch_size == 5
+    resp = await dummy_protocol.query(dict.fromkeys(child_list_methods))
+    assert resp == results
+    assert dummy_protocol._multi_request_batch_size == 1
+    # The timed out batch + one single request per method
+    assert send_mock.call_count == 3
+
+
 async def test_childdevicewrapper_unwrapping(
     dummy_protocol: SmartProtocol, mocker: MockerFixture
 ) -> None:

diff --git a/tests/test_httpclient.py b/tests/test_httpclient.py
@@ -1,3 +1,4 @@
+import builtins
 import re
 
 import aiohttp
@@ -35,6 +36,13 @@
             TimeoutError,
             "Unable to query the device, timed out: ",
         ),
+        # aiohttp raises the builtin TimeoutError when ClientTimeout(total=...)
+        # expires after the connection is established.
+        (
+            builtins.TimeoutError(),
+            TimeoutError,
+            "Unable to query the device, timed out: ",
+        ),
         (Exception(), KasaException, "Unable to query the device: "),
         (
             aiohttp.ServerFingerprintMismatch(b"exp", b"got", "host", 1),
@@ -47,6 +55,7 @@
         "ClientOSError",
         "ServerTimeoutError",
         "TimeoutError",
+        "BuiltinTimeoutError",
         "Exception",
         "ServerFingerprintMismatch",
     ),