diff --git a/include/modules/battery.hpp b/include/modules/battery.hpp
index 7955e598..6f09043b 100644
--- a/include/modules/battery.hpp
+++ b/include/modules/battery.hpp
@@ -32,7 +32,7 @@ class Battery : public ALabel {
   void refreshBatteries();
   void worker();
   const std::string getAdapterStatus(uint8_t capacity) const;
-  const std::tuple<uint8_t, float, std::string, float> getInfos();
+  const std::tuple<uint8_t, float, std::string, float, uint16_t> getInfos();
   const std::string formatTimeRemaining(float hoursRemaining);
   void setBarClass(std::string&);
 
diff --git a/man/waybar-battery.5.scd b/man/waybar-battery.5.scd
index e359ea2e..284803b0 100644
--- a/man/waybar-battery.5.scd
+++ b/man/waybar-battery.5.scd
@@ -119,6 +119,8 @@ The *battery* module displays the current capacity and state (eg. charging) of y
 
 *{time}*: Estimate of time until full or empty. Note that this is based on the power draw at the last refresh time, not an average.
 
+*{cycles}*: Amount of charge cycles the highest-capacity battery has seen. *(Linux only)*
+
 # TIME FORMAT
 
 The *battery* module allows you to define how time should be formatted via *format-time*.
diff --git a/src/modules/battery.cpp b/src/modules/battery.cpp
index 9003db6e..06df5db2 100644
--- a/src/modules/battery.cpp
+++ b/src/modules/battery.cpp
@@ -181,7 +181,7 @@ static bool status_gt(const std::string& a, const std::string& b) {
   return false;
 }
 
-const std::tuple<uint8_t, float, std::string, float> waybar::modules::Battery::getInfos() {
+const std::tuple<uint8_t, float, std::string, float, uint16_t> waybar::modules::Battery::getInfos() {
   std::lock_guard<std::mutex> guard(battery_list_mutex_);
 
   try {
@@ -252,6 +252,9 @@ const std::tuple<uint8_t, float, std::string, float> waybar::modules::Battery::g
     uint32_t time_to_full_now = 0;
     bool time_to_full_now_exists = false;
 
+    uint32_t largest_design_capacity = 0;
+    uint16_t main_bat_cycle_count = 0;
+
     std::string status = "Unknown";
     for (auto const& item : batteries_) {
       auto bat = item.first;
@@ -353,6 +356,16 @@ const std::tuple<uint8_t, float, std::string, float> waybar::modules::Battery::g
         std::ifstream(bat / "energy_full_design") >> energy_full_design;
       }
 
+      bool is_main_battery = charge_full_design >= largest_design_capacity;
+      uint16_t cycle_count = 0;
+      if (fs::exists(bat / "cycle_count")) {
+        std::ifstream(bat / "cycle_count") >> cycle_count;
+      }
+      if (is_main_battery && (cycle_count > main_bat_cycle_count)) {
+        largest_design_capacity = charge_full_design;
+        main_bat_cycle_count = cycle_count;
+      }
+
       if (!voltage_now_exists) {
         if (power_now_exists && current_now_exists && current_now != 0) {
           voltage_now_exists = true;
@@ -573,11 +586,11 @@ const std::tuple<uint8_t, float, std::string, float> waybar::modules::Battery::g
     // still charging but not yet done
     if (cap == 100 && status == "Charging") status = "Full";
 
-    return {cap, time_remaining, status, total_power / 1e6};
+    return {cap, time_remaining, status, total_power / 1e6, main_bat_cycle_count};
 #endif
   } catch (const std::exception& e) {
     spdlog::error("Battery: {}", e.what());
-    return {0, 0, "Unknown", 0};
+    return {0, 0, "Unknown", 0, 0};
   }
 }
 
@@ -633,7 +646,7 @@ auto waybar::modules::Battery::update() -> void {
     return;
   }
 #endif
-  auto [capacity, time_remaining, status, power] = getInfos();
+  auto [capacity, time_remaining, status, power, cycles] = getInfos();
   if (status == "Unknown") {
     status = getAdapterStatus(capacity);
   }
@@ -666,7 +679,8 @@ auto waybar::modules::Battery::update() -> void {
     label_.set_tooltip_text(fmt::format(fmt::runtime(tooltip_format),
                                         fmt::arg("timeTo", tooltip_text_default),
                                         fmt::arg("power", power), fmt::arg("capacity", capacity),
-                                        fmt::arg("time", time_remaining_formatted)));
+                                        fmt::arg("time", time_remaining_formatted),
+                                        fmt::arg("cycles", cycles)));
   }
   if (!old_status_.empty()) {
     label_.get_style_context()->remove_class(old_status_);
@@ -687,7 +701,8 @@ auto waybar::modules::Battery::update() -> void {
     auto icons = std::vector<std::string>{status + "-" + state, status, state};
     label_.set_markup(fmt::format(
         fmt::runtime(format), fmt::arg("capacity", capacity), fmt::arg("power", power),
-        fmt::arg("icon", getIcon(capacity, icons)), fmt::arg("time", time_remaining_formatted)));
+        fmt::arg("icon", getIcon(capacity, icons)), fmt::arg("time", time_remaining_formatted),
+        fmt::arg("cycles", cycles)));
   }
   // Call parent update
   ALabel::update();