diff --git a/basis/fuel_lib.lua b/basis/fuel_lib.lua
index 69b438e..d86bcb3 100644
--- a/basis/fuel_lib.lua
+++ b/basis/fuel_lib.lua
@@ -71,7 +71,7 @@ function techage.fuel.formspec(nvm)
 end
 
 function techage.fuel.can_dig(pos, player)
-	if minetest.is_protected(pos, player:get_player_name()) then
+	if not player or minetest.is_protected(pos, player:get_player_name()) then
 		return false
 	end
 	local nvm = techage.get_nvm(pos)
diff --git a/oil/pumpjack.lua b/oil/pumpjack.lua
index 81200ab..eb70012 100644
--- a/oil/pumpjack.lua
+++ b/oil/pumpjack.lua
@@ -174,7 +174,17 @@ tiles.act = {
 	
 local tubing = {
 	on_recv_message = function(pos, src, topic, payload)
-		return CRD(pos).State:on_receive_message(pos, topic, payload)
+		if topic == "load" then
+			local storage_pos = M(pos):get_string("storage_pos")
+			if storage_pos ~= "" then
+				local amount, capa = techage.explore.get_oil_amount(P(storage_pos))
+				if amount and capa and capa > 0 then
+					return techage.power.percent(capa or 0, amount or 0), amount or 0
+				end
+			end
+		else		
+			return CRD(pos).State:on_receive_message(pos, topic, payload)
+		end
 	end,
 	on_node_load = function(pos, node)
 		CRD(pos).State:on_node_load(pos)
diff --git a/ta3_power/akkubox.lua b/ta3_power/akkubox.lua
index f5efc7a..3d7b662 100644
--- a/ta3_power/akkubox.lua
+++ b/ta3_power/akkubox.lua
@@ -167,7 +167,7 @@ minetest.register_node("techage:ta3_akku", {
 	description = S("TA3 Accu Box"),
 	tiles = {
 		-- up, down, right, left, back, front
-		"techage_filling_ta3.png^techage_frame_ta3_top.png",
+		"techage_filling_ta3.png^techage_frame_ta3_top.png^techage_appl_arrow.png",
 		"techage_filling_ta3.png^techage_frame_ta3.png",
 		"techage_filling_ta3.png^techage_frame_ta3.png^techage_appl_hole_electric.png",
 		"techage_filling_ta3.png^techage_frame_ta3.png^techage_appl_source.png",