diff --git a/technic_power.lua b/technic_power.lua
index 0345201..7deada4 100644
--- a/technic_power.lua
+++ b/technic_power.lua
@@ -64,7 +64,7 @@ battery_recharge = function(pos)
 			meta:set_float("energy",energy);
 			meta:set_string("infotext", "(R) energy: " .. math.ceil(energy*10)/10 .. " / ".. capacity);
 			--TODO2: add entity power status display
-			minetest.sound_play("electric_zap", {pos=pos,gain=0.03,max_hear_distance = 8,})
+			minetest.sound_play("electric_zap", {pos=pos,gain=0.05,max_hear_distance = 8,})
 		end
 	end