Change battery threshold to percentage

More reliable as remaining time depends on the instant energy
consumption.

Install/Templates/i3status/config

@@ -49,8 +49,8 @@ battery 0 {
         status_unk = "⍰"
         status_full = "⌼"
         path = "/sys/class/power_supply/BAT%d/uevent"
-        low_threshold = 20
-        threshold_type = time
+        low_threshold = 6
+        threshold_type = percentage
 }
 
 tztime local {