feat(core/prodtest): allow reading and resetting telemetry data in prodtest

diff --git a/core/SConscript.prodtest b/core/SConscript.prodtest
index 0c0973da..315cfd7d 100644
--- a/core/SConscript.prodtest
+++ b/core/SConscript.prodtest
@@ -42,6 +42,7 @@ FEATURES_WANTED = [
     "secure_mode",
     "smp",
     "suspend",
+    'telemetry',
     "tropic",
     "usb",
     "usb_iface_vcp",
@@ -220,6 +221,7 @@ SOURCE_PRODTEST = [
     'embed/projects/prodtest/cmd/prodtest_tamper.c',
     'embed/projects/prodtest/cmd/prodtest_sbu.c',
     'embed/projects/prodtest/cmd/prodtest_secure_channel.c',
+    'embed/projects/prodtest/cmd/prodtest_telemetry.c',
     'embed/projects/prodtest/cmd/prodtest_touch.c',
     'embed/projects/prodtest/cmd/prodtest_tropic.c',
     'embed/projects/prodtest/cmd/prodtest_unit_test.c',
diff --git a/core/SConscript.prodtest_emu b/core/SConscript.prodtest_emu
index 8f9af6cc..158684b7 100644
--- a/core/SConscript.prodtest_emu
+++ b/core/SConscript.prodtest_emu
@@ -31,6 +31,7 @@ FEATURES_WANTED = [
     "rgb_led",
     "sd_card",
     "secure_mode",
+    'telemetry',
     "tropic",
     "usb",
     "usb_iface_vcp",
@@ -191,6 +192,7 @@ SOURCE_PRODTEST = [
     'embed/projects/prodtest/cmd/prodtest_tamper.c',
     'embed/projects/prodtest/cmd/prodtest_sbu.c',
     'embed/projects/prodtest/cmd/prodtest_secure_channel.c',
+    'embed/projects/prodtest/cmd/prodtest_telemetry.c',
     'embed/projects/prodtest/cmd/prodtest_touch.c',
     'embed/projects/prodtest/cmd/prodtest_tropic.c',
     'embed/projects/prodtest/cmd/secure_channel.c',
diff --git a/core/embed/projects/prodtest/README.md b/core/embed/projects/prodtest/README.md
index 21d86dae..ea686e07 100644
--- a/core/embed/projects/prodtest/README.md
+++ b/core/embed/projects/prodtest/README.md
@@ -1580,3 +1580,31 @@ Example:
 rtc-get
 OK 2025 07 03 14 23 00 4
 ```
+
+### telemetry-read
+Retrieves stored telemetry data, including minimum and maximum recorded battery temperatures, battery error flags, and battery cycle count.
+
+Response format:
+`OK <min_temp_c> <max_temp_c> <battery_errors> <battery_cycles>`
+
+- `min_temp_c`: Minimum temperature in millidegrees Celsius (°C × 1000)
+- `max_temp_c`: Maximum temperature in millidegrees Celsius (°C × 1000)
+- `battery_errors`: Battery error flags as hexadecimal
+- `battery_cycles`: Battery cycles in millicycles (cycles × 1000)
+
+If telemetry data is not available (not yet initialized), the command returns an error.
+
+Example:
+```
+telemetry-read
+OK 18500 42300 0x00 12450
+```
+
+### telemetry-reset
+Resets all telemetry data to initial state. This clears all stored telemetry values and reinitializes them to default values.
+
+Example:
+```
+telemetry-reset
+OK
+```
diff --git a/core/embed/projects/prodtest/cmd/prodtest_telemetry.c b/core/embed/projects/prodtest/cmd/prodtest_telemetry.c
new file mode 100644
index 00000000..ebddacaa
--- /dev/null
+++ b/core/embed/projects/prodtest/cmd/prodtest_telemetry.c
@@ -0,0 +1,82 @@
+/*
+ * This file is part of the Trezor project, https://trezor.io/
+ *
+ * Copyright (c) SatoshiLabs
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifdef USE_TELEMETRY
+
+#include <trezor_rtl.h>
+
+#include <rtl/cli.h>
+#include <sec/telemetry.h>
+#include <sec/unit_properties.h>
+
+static void prodtest_telemetry(cli_t* cli) {
+  if (cli_arg_count(cli) > 0) {
+    cli_error_arg_count(cli);
+    return;
+  }
+
+  telemetry_data_t data;
+
+  if (!telemetry_get(&data)) {
+    cli_error(cli, CLI_ERROR_NODATA, "Telemetry data not available");
+    return;
+  }
+
+  int32_t min_temp = (int32_t)(data.min_temp_c * 1000.0f);
+  int32_t max_temp = (int32_t)(data.max_temp_c * 1000.0f);
+  int32_t battery_cycles = (int32_t)(data.battery_cycles * 1000.0f);
+
+  cli_ok(cli, "%d %d 0x%02X %d", min_temp, max_temp, data.battery_errors.all,
+         battery_cycles);
+}
+
+static void prodtest_telemetry_reset(cli_t* cli) {
+  if (cli_arg_count(cli) > 0) {
+    cli_error_arg_count(cli);
+    return;
+  }
+
+#if PRODUCTION
+  if (unit_properties()->locked) {
+    cli_error(cli, CLI_ERROR, "Device is not in manufacturing mode.");
+    return;
+  }
+#endif
+
+  telemetry_reset();
+  cli_ok(cli, "");
+}
+
+// clang-format off
+
+PRODTEST_CLI_CMD(
+  .name = "telemetry-read",
+  .func = prodtest_telemetry,
+  .info = "Read telemetry data",
+  .args = ""
+);
+
+PRODTEST_CLI_CMD(
+  .name = "telemetry-reset",
+  .func = prodtest_telemetry_reset,
+  .info = "Reset telemetry data",
+  .args = ""
+);
+
+#endif  // USE_TELEMETRY
diff --git a/core/embed/sec/telemetry/inc/sec/telemetry.h b/core/embed/sec/telemetry/inc/sec/telemetry.h
index 50cff223..c5cd8c3d 100644
--- a/core/embed/sec/telemetry/inc/sec/telemetry.h
+++ b/core/embed/sec/telemetry/inc/sec/telemetry.h
@@ -87,3 +87,10 @@ void telemetry_update_battery_cycles(float battery_cycles_inc);
  * @return true if values are available (initialized), false otherwise.
  */
 bool telemetry_get(telemetry_data_t* out);
+
+/**
+ * @brief Reset telemetry data to initial state.
+ *
+ * Clears all stored telemetry data and reinitializes to default values.
+ */
+void telemetry_reset(void);
diff --git a/core/embed/sec/telemetry/stm32u5/telemetry.c b/core/embed/sec/telemetry/stm32u5/telemetry.c
index 102ec702..c846e4cd 100644
--- a/core/embed/sec/telemetry/stm32u5/telemetry.c
+++ b/core/embed/sec/telemetry/stm32u5/telemetry.c
@@ -129,4 +129,6 @@ bool telemetry_get(telemetry_data_t* out) {
   return true;
 }
 
+void telemetry_reset(void) { telemetry_init_record(); }
+
 #endif
diff --git a/core/embed/sec/telemetry/unix/telemetry.c b/core/embed/sec/telemetry/unix/telemetry.c
index 57621fb7..f9bb8464 100644
--- a/core/embed/sec/telemetry/unix/telemetry.c
+++ b/core/embed/sec/telemetry/unix/telemetry.c
@@ -30,4 +30,8 @@ bool telemetry_get(telemetry_data_t* out) {
   return true;
 }
 
+void telemetry_reset(void) {
+  // No-op for emulator
+}
+
 #endif