diff --git a/tablet.lua b/tablet.lua
index aae4e99..58251f4 100644
--- a/tablet.lua
+++ b/tablet.lua
@@ -1,11 +1,27 @@
 local S = minetest.get_translator("surface_effect")
 
-local winsize = "size[15,10]"
-local bgimage = "image[0,0;15,10;surface_effect_tablet_bg.png]"
-surface_effect.display = {}
 local version = "0.0.1"
+local width = 15
+local height = 10
+local winsize = "size["..width..",".. height .."]"
+local bgimage = "no_prepend[] bgcolor[#FFFFFF;true] background[0,-1;15,11;surface_effect_tablet_bg.png]"
+surface_effect.display = {}
 
-function surface_effect.display.main(player)
+local function get_charge_indicator(power)
+    local arm = 65535 / 100
+    local percent = (65535 - (power - 65535))/arm
+
+    if percent > 55 then
+        return 3
+    elseif percent > 15 then
+        return 2
+    elseif percent < 10 then
+        return 1
+    end
+    return 0
+end
+
+function surface_effect.display.main(player, power)
     local pos = player:get_pos()
     local info_biome = minetest.get_biome_data(pos)
     --minetest.log(dump(info_biome))
@@ -13,9 +29,14 @@ function surface_effect.display.main(player)
         "formspec_version[4]",
         winsize,
         bgimage,
-        "style[label;textcolor=green;size=2]",
-        "label[0.5,0.5;"..S("Software version: @1", version).."]",
-        "label[0.5,1.0;"..S("Air temperature: @1", math.floor(info_biome.heat)).."]",
+        "container[0,0]",
+        "style_type[label;textcolor=green;bgcolor=red]",
+        "label[1.0,0.5;"..S("Software version: @1", minetest.colorize("#FF0000", version)).."]",
+        "image[".. width - 2 ..",0.3;1.0,0.5;surface_effect_tablet_charge_level".. get_charge_indicator(power) .. ".png]",
+        "container_end[]",
+        "image[1.0,1.0;0.7,0.7;surface_effect_thermometer.png]",
+        "label[1.5,1.0;"..math.floor(info_biome.heat).."]",
+        "button[".. width / 2 .. ",".. height - 1 ..";0.5,0.5;home;|]"
         --"style[weather;textcolor=black;size=2]",
         --"image_button[0.5,0.5;1.5,1.5;surface_effect_weather_btn.png;weather;Weather]"
     }
@@ -46,14 +67,13 @@ minetest.register_tool("surface_effect:tablet", {
         if charge > 0 then
             technic.set_RE_wear(stack, charge, 65535)
             meta:set_int("technic:charge", charge)
-            minetest.show_formspec(name, "surface_effect:display_main", surface_effect.display.main(player))
+            minetest.show_formspec(name, "surface_effect:display_main", surface_effect.display.main(player, charge))
             --stack:set_stack()
         end
-        minetest.log(dump(charge))
         return stack
     end,
 })
 
 if minetest.get_modpath("technic") then
     technic.register_power_tool("surface_effect:tablet", 65535)
-end
\ No newline at end of file
+end
diff --git a/textures/surface_effect_tablet_bg.png b/textures/surface_effect_tablet_bg.png
index 3f9fb4b..f3d7501 100644
Binary files a/textures/surface_effect_tablet_bg.png and b/textures/surface_effect_tablet_bg.png differ
diff --git a/textures/surface_effect_tablet_charge_level0.png b/textures/surface_effect_tablet_charge_level0.png
new file mode 100644
index 0000000..f130ade
Binary files /dev/null and b/textures/surface_effect_tablet_charge_level0.png differ
diff --git a/textures/surface_effect_tablet_charge_level1.png b/textures/surface_effect_tablet_charge_level1.png
new file mode 100644
index 0000000..9fc2f3c
Binary files /dev/null and b/textures/surface_effect_tablet_charge_level1.png differ
diff --git a/textures/surface_effect_tablet_charge_level2.png b/textures/surface_effect_tablet_charge_level2.png
new file mode 100644
index 0000000..276119d
Binary files /dev/null and b/textures/surface_effect_tablet_charge_level2.png differ
diff --git a/textures/surface_effect_tablet_charge_level3.png b/textures/surface_effect_tablet_charge_level3.png
new file mode 100644
index 0000000..1eff5d7
Binary files /dev/null and b/textures/surface_effect_tablet_charge_level3.png differ
diff --git a/textures/surface_effect_thermometer.png b/textures/surface_effect_thermometer.png
new file mode 100644
index 0000000..9aa72c5
Binary files /dev/null and b/textures/surface_effect_thermometer.png differ