feat(core): add battery_cycle field in the protobuf telemetry message.

diff --git a/common/protob/messages-telemetry.proto b/common/protob/messages-telemetry.proto
index 17e215787..8dd5559f5 100644
--- a/common/protob/messages-telemetry.proto
+++ b/common/protob/messages-telemetry.proto
@@ -25,5 +25,6 @@ message TelemetryGet {
 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 uint32 battery_errors = 3;  // Bitfield of battery errors
+    optional sint32 battery_cycles = 4;  // Total battery cycles
 }
diff --git a/core/embed/upymod/modtrezorutils/modtrezorutils.c b/core/embed/upymod/modtrezorutils/modtrezorutils.c
index 2db078fe5..57bba05ab 100644
--- a/core/embed/upymod/modtrezorutils/modtrezorutils.c
+++ b/core/embed/upymod/modtrezorutils/modtrezorutils.c
@@ -68,7 +68,7 @@
 /// from trezor import utils
 
 #ifdef USE_TELEMETRY
-/// def telemetry_get() -> tuple[int, int, int] | None:
+/// 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)
@@ -80,12 +80,13 @@ STATIC mp_obj_t mod_trezorutils_telemetry_get(void) {
     return mp_const_none;
   }
 
-  mp_obj_t tuple[3];
+  mp_obj_t tuple[4];
   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));
 
-  return mp_obj_new_tuple(3, tuple);
+  return mp_obj_new_tuple(4, tuple);
 }
 STATIC MP_DEFINE_CONST_FUN_OBJ_0(mod_trezorutils_telemetry_get_obj,
                                  mod_trezorutils_telemetry_get);
diff --git a/core/mocks/generated/trezorutils.pyi b/core/mocks/generated/trezorutils.pyi
index 942b2a8bc..299024661 100644
--- a/core/mocks/generated/trezorutils.pyi
+++ b/core/mocks/generated/trezorutils.pyi
@@ -11,7 +11,7 @@ from trezor import utils
 
 
 # upymod/modtrezorutils/modtrezorutils.c
-def telemetry_get() -> tuple[int, int, int] | None:
+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)
diff --git a/core/src/apps/telemetry/get_telemetry.py b/core/src/apps/telemetry/get_telemetry.py
index 143b061c6..730127dce 100644
--- a/core/src/apps/telemetry/get_telemetry.py
+++ b/core/src/apps/telemetry/get_telemetry.py
@@ -10,11 +10,12 @@ async def get_telemetry(msg: TelemetryGet) -> Telemetry:
 
     data = telemetry_get()
     if data:
-        min_temp_c, max_temp_c, battery_errors = data
+        min_temp_c, max_temp_c, battery_errors, battery_cycles = data
         return Telemetry(
             min_temp_c=min_temp_c,
             max_temp_c=max_temp_c,
             battery_errors=battery_errors,
+            battery_cycles=battery_cycles,
         )
     else:
         return Telemetry()
diff --git a/core/src/trezor/messages.py b/core/src/trezor/messages.py
index fad99ea4f..743e578fe 100644
--- a/core/src/trezor/messages.py
+++ b/core/src/trezor/messages.py
@@ -6138,6 +6138,7 @@ if TYPE_CHECKING:
         min_temp_c: "int | None"
         max_temp_c: "int | None"
         battery_errors: "int | None"
+        battery_cycles: "int | None"
 
         def __init__(
             self,
@@ -6145,6 +6146,7 @@ if TYPE_CHECKING:
             min_temp_c: "int | None" = None,
             max_temp_c: "int | None" = None,
             battery_errors: "int | None" = None,
+            battery_cycles: "int | None" = None,
         ) -> None:
             pass
 
diff --git a/rust/trezor-client/src/protos/generated/messages_telemetry.rs b/rust/trezor-client/src/protos/generated/messages_telemetry.rs
index 71dabec23..aedd9ea18 100644
--- a/rust/trezor-client/src/protos/generated/messages_telemetry.rs
+++ b/rust/trezor-client/src/protos/generated/messages_telemetry.rs
@@ -137,6 +137,8 @@ pub struct Telemetry {
     pub max_temp_c: ::std::option::Option<i32>,
     // @@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>,
     // special fields
     // @@protoc_insertion_point(special_field:hw.trezor.messages.telemetry.Telemetry.special_fields)
     pub special_fields: ::protobuf::SpecialFields,
@@ -210,8 +212,27 @@ impl Telemetry {
         self.battery_errors = ::std::option::Option::Some(v);
     }
 
+    // optional sint32 battery_cycles = 4;
+
+    pub fn battery_cycles(&self) -> i32 {
+        self.battery_cycles.unwrap_or(0)
+    }
+
+    pub fn clear_battery_cycles(&mut self) {
+        self.battery_cycles = ::std::option::Option::None;
+    }
+
+    pub fn has_battery_cycles(&self) -> bool {
+        self.battery_cycles.is_some()
+    }
+
+    // Param is passed by value, moved
+    pub fn set_battery_cycles(&mut self, v: i32) {
+        self.battery_cycles = ::std::option::Option::Some(v);
+    }
+
     fn generated_message_descriptor_data() -> ::protobuf::reflect::GeneratedMessageDescriptorData {
-        let mut fields = ::std::vec::Vec::with_capacity(3);
+        let mut fields = ::std::vec::Vec::with_capacity(4);
         let mut oneofs = ::std::vec::Vec::with_capacity(0);
         fields.push(::protobuf::reflect::rt::v2::make_option_accessor::<_, _>(
             "min_temp_c",
@@ -228,6 +249,11 @@ impl Telemetry {
             |m: &Telemetry| { &m.battery_errors },
             |m: &mut Telemetry| { &mut m.battery_errors },
         ));
+        fields.push(::protobuf::reflect::rt::v2::make_option_accessor::<_, _>(
+            "battery_cycles",
+            |m: &Telemetry| { &m.battery_cycles },
+            |m: &mut Telemetry| { &mut m.battery_cycles },
+        ));
         ::protobuf::reflect::GeneratedMessageDescriptorData::new_2::<Telemetry>(
             "Telemetry",
             fields,
@@ -255,6 +281,9 @@ impl ::protobuf::Message for Telemetry {
                 24 => {
                     self.battery_errors = ::std::option::Option::Some(is.read_uint32()?);
                 },
+                32 => {
+                    self.battery_cycles = ::std::option::Option::Some(is.read_sint32()?);
+                },
                 tag => {
                     ::protobuf::rt::read_unknown_or_skip_group(tag, is, self.special_fields.mut_unknown_fields())?;
                 },
@@ -276,6 +305,9 @@ impl ::protobuf::Message for Telemetry {
         if let Some(v) = self.battery_errors {
             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::unknown_fields_size(self.special_fields.unknown_fields());
         self.special_fields.cached_size().set(my_size as u32);
         my_size
@@ -291,6 +323,9 @@ impl ::protobuf::Message for Telemetry {
         if let Some(v) = self.battery_errors {
             os.write_uint32(3, v)?;
         }
+        if let Some(v) = self.battery_cycles {
+            os.write_sint32(4, v)?;
+        }
         os.write_unknown_fields(self.special_fields.unknown_fields())?;
         ::std::result::Result::Ok(())
     }
@@ -311,6 +346,7 @@ impl ::protobuf::Message for Telemetry {
         self.min_temp_c = ::std::option::Option::None;
         self.max_temp_c = ::std::option::Option::None;
         self.battery_errors = ::std::option::Option::None;
+        self.battery_cycles = ::std::option::Option::None;
         self.special_fields.clear();
     }
 
@@ -319,6 +355,7 @@ impl ::protobuf::Message for Telemetry {
             min_temp_c: ::std::option::Option::None,
             max_temp_c: ::std::option::Option::None,
             battery_errors: ::std::option::Option::None,
+            battery_cycles: ::std::option::Option::None,
             special_fields: ::protobuf::SpecialFields::new(),
         };
         &instance
@@ -344,11 +381,12 @@ impl ::protobuf::reflect::ProtobufValue for Telemetry {
 
 static file_descriptor_proto_data: &'static [u8] = b"\
     \n\x18messages-telemetry.proto\x12\x1chw.trezor.messages.telemetry\x1a\r\
-    options.proto\"\x0e\n\x0cTelemetryGet\"n\n\tTelemetry\x12\x1c\n\nmin_tem\
-    p_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\rbat\
-    teryErrorsBA\n#com.satoshilabs.trezor.lib.protobufB\x16TrezorMessageTele\
-    metry\x80\xa6\x1d\x01\
+    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\
 ";
 
 /// `FileDescriptorProto` object which was a source for this generated file