feat(python): Update trezorctl telemetry command with battery_cycle field.

diff --git a/common/protob/messages-telemetry.proto b/common/protob/messages-telemetry.proto
index 8dd5559f5..c97348abd 100644
--- a/common/protob/messages-telemetry.proto
+++ b/common/protob/messages-telemetry.proto
@@ -26,5 +26,5 @@ message Telemetry {
     optional sint32 min_temp_c = 1;      // Minimum recorded battery temperature in milli-Celsius
     optional sint32 max_temp_c = 2;      // Maximum recorded battery temperature in milli-Celsius
     optional uint32 battery_errors = 3;  // Bitfield of battery errors
-    optional sint32 battery_cycles = 4;  // Total battery cycles
+    optional uint32 battery_cycles = 4;  // Total battery milli-cycles
 }
diff --git a/core/embed/upymod/modtrezorutils/modtrezorutils.c b/core/embed/upymod/modtrezorutils/modtrezorutils.c
index 57bba05ab..1a0d4fe85 100644
--- a/core/embed/upymod/modtrezorutils/modtrezorutils.c
+++ b/core/embed/upymod/modtrezorutils/modtrezorutils.c
@@ -71,7 +71,7 @@
 /// def telemetry_get() -> tuple[int, int, int, int] | None:
 ///     """
 ///     Retrieves the stored telemetry data. Returns a tuple
-///     (min_temp_milli_c, max_temp_milli_c, battery_errors)
+///     (min_temp_milli_c, max_temp_milli_c, battery_errors, battery_cycles)
 ///     or None if telemetry is not available.
 ///     """
 STATIC mp_obj_t mod_trezorutils_telemetry_get(void) {
@@ -84,7 +84,7 @@ STATIC mp_obj_t mod_trezorutils_telemetry_get(void) {
   tuple[0] = mp_obj_new_int((int32_t)(data.min_temp_c * 1000.0f));
   tuple[1] = mp_obj_new_int((int32_t)(data.max_temp_c * 1000.0f));
   tuple[2] = mp_obj_new_int(data.battery_errors.all);
-  tuple[3] = mp_obj_new_int((int32_t)(data.battery_cycles *1000.0f));
+  tuple[3] = mp_obj_new_int(data.battery_cycles * 1000.0f);
 
   return mp_obj_new_tuple(4, tuple);
 }
diff --git a/core/mocks/generated/trezorutils.pyi b/core/mocks/generated/trezorutils.pyi
index 299024661..4c07a3c04 100644
--- a/core/mocks/generated/trezorutils.pyi
+++ b/core/mocks/generated/trezorutils.pyi
@@ -14,7 +14,7 @@ from trezor import utils
 def telemetry_get() -> tuple[int, int, int, int] | None:
     """
     Retrieves the stored telemetry data. Returns a tuple
-    (min_temp_milli_c, max_temp_milli_c, battery_errors)
+    (min_temp_milli_c, max_temp_milli_c, battery_errors, battery_cycles)
     or None if telemetry is not available.
     """
 
diff --git a/python/src/trezorlib/cli/telemetry.py b/python/src/trezorlib/cli/telemetry.py
index 3228f4c46..5200cfc5c 100644
--- a/python/src/trezorlib/cli/telemetry.py
+++ b/python/src/trezorlib/cli/telemetry.py
@@ -60,3 +60,6 @@ def get(session: Session) -> None:
             for bit, name in BATTERY_ERRORS.items():
                 if res.battery_errors & bit:
                     click.echo(f" - {name}")
+
+    if res.battery_cycles is not None:
+        click.echo(f"Battery cycles: {res.battery_cycles / 1000:.2f}")
diff --git a/python/src/trezorlib/messages.py b/python/src/trezorlib/messages.py
index 8ab8abc39..faee6c143 100644
--- a/python/src/trezorlib/messages.py
+++ b/python/src/trezorlib/messages.py
@@ -7872,6 +7872,7 @@ class Telemetry(protobuf.MessageType):
         1: protobuf.Field("min_temp_c", "sint32", repeated=False, required=False, default=None),
         2: protobuf.Field("max_temp_c", "sint32", repeated=False, required=False, default=None),
         3: protobuf.Field("battery_errors", "uint32", repeated=False, required=False, default=None),
+        4: protobuf.Field("battery_cycles", "uint32", repeated=False, required=False, default=None),
     }
 
     def __init__(
@@ -7880,10 +7881,12 @@ class Telemetry(protobuf.MessageType):
         min_temp_c: Optional["int"] = None,
         max_temp_c: Optional["int"] = None,
         battery_errors: Optional["int"] = None,
+        battery_cycles: Optional["int"] = None,
     ) -> None:
         self.min_temp_c = min_temp_c
         self.max_temp_c = max_temp_c
         self.battery_errors = battery_errors
+        self.battery_cycles = battery_cycles
 
 
 class TezosGetAddress(protobuf.MessageType):
diff --git a/rust/trezor-client/src/protos/generated/messages_telemetry.rs b/rust/trezor-client/src/protos/generated/messages_telemetry.rs
index aedd9ea18..c90677893 100644
--- a/rust/trezor-client/src/protos/generated/messages_telemetry.rs
+++ b/rust/trezor-client/src/protos/generated/messages_telemetry.rs
@@ -138,7 +138,7 @@ pub struct Telemetry {
     // @@protoc_insertion_point(field:hw.trezor.messages.telemetry.Telemetry.battery_errors)
     pub battery_errors: ::std::option::Option<u32>,
     // @@protoc_insertion_point(field:hw.trezor.messages.telemetry.Telemetry.battery_cycles)
-    pub battery_cycles: ::std::option::Option<i32>,
+    pub battery_cycles: ::std::option::Option<u32>,
     // special fields
     // @@protoc_insertion_point(special_field:hw.trezor.messages.telemetry.Telemetry.special_fields)
     pub special_fields: ::protobuf::SpecialFields,
@@ -212,9 +212,9 @@ impl Telemetry {
         self.battery_errors = ::std::option::Option::Some(v);
     }
 
-    // optional sint32 battery_cycles = 4;
+    // optional uint32 battery_cycles = 4;
 
-    pub fn battery_cycles(&self) -> i32 {
+    pub fn battery_cycles(&self) -> u32 {
         self.battery_cycles.unwrap_or(0)
     }
 
@@ -227,7 +227,7 @@ impl Telemetry {
     }
 
     // Param is passed by value, moved
-    pub fn set_battery_cycles(&mut self, v: i32) {
+    pub fn set_battery_cycles(&mut self, v: u32) {
         self.battery_cycles = ::std::option::Option::Some(v);
     }
 
@@ -282,7 +282,7 @@ impl ::protobuf::Message for Telemetry {
                     self.battery_errors = ::std::option::Option::Some(is.read_uint32()?);
                 },
                 32 => {
-                    self.battery_cycles = ::std::option::Option::Some(is.read_sint32()?);
+                    self.battery_cycles = ::std::option::Option::Some(is.read_uint32()?);
                 },
                 tag => {
                     ::protobuf::rt::read_unknown_or_skip_group(tag, is, self.special_fields.mut_unknown_fields())?;
@@ -306,7 +306,7 @@ impl ::protobuf::Message for Telemetry {
             my_size += ::protobuf::rt::uint32_size(3, v);
         }
         if let Some(v) = self.battery_cycles {
-            my_size += ::protobuf::rt::sint32_size(4, v);
+            my_size += ::protobuf::rt::uint32_size(4, v);
         }
         my_size += ::protobuf::rt::unknown_fields_size(self.special_fields.unknown_fields());
         self.special_fields.cached_size().set(my_size as u32);
@@ -324,7 +324,7 @@ impl ::protobuf::Message for Telemetry {
             os.write_uint32(3, v)?;
         }
         if let Some(v) = self.battery_cycles {
-            os.write_sint32(4, v)?;
+            os.write_uint32(4, v)?;
         }
         os.write_unknown_fields(self.special_fields.unknown_fields())?;
         ::std::result::Result::Ok(())
@@ -384,9 +384,9 @@ static file_descriptor_proto_data: &'static [u8] = b"\
     options.proto\"\x0e\n\x0cTelemetryGet\"\x95\x01\n\tTelemetry\x12\x1c\n\n\
     min_temp_c\x18\x01\x20\x01(\x11R\x08minTempC\x12\x1c\n\nmax_temp_c\x18\
     \x02\x20\x01(\x11R\x08maxTempC\x12%\n\x0ebattery_errors\x18\x03\x20\x01(\
-    \rR\rbatteryErrors\x12%\n\x0ebattery_cycles\x18\x04\x20\x01(\x11R\rbatte\
-    ryCyclesBA\n#com.satoshilabs.trezor.lib.protobufB\x16TrezorMessageTeleme\
-    try\x80\xa6\x1d\x01\
+    \rR\rbatteryErrors\x12%\n\x0ebattery_cycles\x18\x04\x20\x01(\rR\rbattery\
+    CyclesBA\n#com.satoshilabs.trezor.lib.protobufB\x16TrezorMessageTelemetr\
+    y\x80\xa6\x1d\x01\
 ";
 
 /// `FileDescriptorProto` object which was a source for this generated file