diff --git a/battery.c b/battery.c
index 1a44745..186812e 100644
--- a/battery.c
+++ b/battery.c
@@ -1,13 +1,9 @@
-#ifndef __FreeBSD__
-  #error Only works on FreeBSD
-#endif
-
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/types.h>
-#include <sys/sysctl.h>
 
-const char *bat_icons[] = {
+const char *icon[] = {
     "\uf58d",  /* 0% */
     "\uf579",
     "\uf57a",
@@ -21,36 +17,89 @@ const char *bat_icons[] = {
     "\uf578",  /* 100% */
 };
 
-int main() {
-  int life, state;
+typedef enum {
+  CHARGED = 0,
+  DISCHARGING = 1,
+  CHARGING = 2,
+  DISCONNECTED = 7,
+} State;
+
+#if defined (__linux__)
+void battery_state(int *nbats, int bat[], State state[]) {
+  FILE *fd;
+  int i=0;
+  do {
+    char filename[50], status[50];
+    
+    // get current capacity
+    sprintf(filename, "/sys/class/power_supply/BAT%d/capacity", i);
+    fd = fopen(filename, "rb");
+    if (fd == NULL) 
+      break;
+    fscanf(fd, "%d", &bat[i]);
+    fclose(fd);
+    // battery status (charging...)
+    sprintf(filename, "/sys/class/power_supply/BAT%d/status", i);
+    fd = fopen(filename, "rb");
+    fgets(status, 50, fd);
+    // puts(status);
+    fclose(fd);
+    if (!strcmp(status, "Not charging\n"))
+      state[i] = CHARGED;
+    else if (!strcmp(status, "Discharging\n"))
+      state[i] = DISCHARGING;
+    else if (!strcmp(status, "Charging\n"))
+      state[i] = CHARGING;
+
+    // next
+    i++;
+  } while (1);
+  *nbats = i;
+}
+#elif defined (__FreeBSD__)
+#include <sys/sysctl.h>
+void battery_state(int *nbats, int bat[], State state[]) {
   size_t len = sizeof(int);
+  int state = -1, life = 0;
 
   if (sysctlbyname("hw.acpi.battery.state", &state, &len, NULL, 0) ||
-      sysctlbyname("hw.acpi.battery.life", &life, &len, NULL, 0)) {
-    puts("(no battery)");
-    exit(EXIT_FAILURE);
-  }
+      sysctlbyname("hw.acpi.battery.life", &life, &len, NULL, 0))
+    state[0] = UNKNOWN;
+
+  *nbats = 1;
+  bat[0] = life;
+  state[0] = state;
+}
+#endif
+
+int main() {
+  char *color;
+  int life[2], nbats;
+  State state[2];
+
+  battery_state(&nbats, life, state);
+  for (int i=0; i < nbats; i++) {
+
+    if (life[i] >= 50) color = "colour028"; /* green */
+    else if (life[i] >= 25) color = "colour172"; /* yellow */
+    else color = "colour088"; /* red */
 
-  if (life > 100)
-    life = 100;
-  else if (life < 0)
-    life = 0;
-
-  switch (state) {
-  case 0: /* fully charged */
-    printf("\uf583 Full");
-    break;
-  case 1: /* discharging */
-    printf("%s %d%%\n", bat_icons[life / 10], life);
-    break;
-  case 2: /* charging */
-    printf("\uf583 %d%%\n", life);
-    break;
-  case 7: /* disconnected */
-    printf("\uf492");
-    break;
-  default: /* unknown code */
-    printf("\uf590");
+    switch (state[i]) {
+    case CHARGED: /* fully charged */
+      printf("%s %d%%  ", icon[life[i]/10], life[i]);
+      break;
+    case DISCHARGING: /* discharging */
+      printf("#[fg=%s]%s#[fg=default] %d%%  ", color, icon[life[i]/10], life[i]);
+      break;
+    case CHARGING: /* charging */
+      printf("#[fg=yellow]\uf583#[fg=default] %d%%\n  ", life[i]);
+      break;
+    case DISCONNECTED: /* disconnected */
+      printf("\uf492  ");
+      break;
+    default: /* unknown code */
+      printf("\uf590  ");
+    }
   }
 
   return EXIT_SUCCESS;
--
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