diff --git a/widgets/bat.lua b/widgets/bat.lua
index 1730494..aa0ce61 100644
--- a/widgets/bat.lua
+++ b/widgets/bat.lua
@@ -97,10 +97,9 @@ local function worker(args)
 
             bat_now.time = string.format("%02d:%02d", hrs, min)
 
-            local perc = first_line(bstr .. "/capacity") or (rem / tot) * 100
+            local perc = tonumber(first_line(bstr .. "/capacity")) or (rem / tot) * 100
 
-            local perc = (rem / tot) * 100
-            if perc <= 100 then
+			if perc <= 100 then
                 bat_now.perc = string.format("%d", perc)
             elseif perc > 100 then
                 bat_now.perc = "100"