diff --git a/coordinator/iocontrol.lua b/coordinator/iocontrol.lua
index 07479e0..95a3e6f 100644
--- a/coordinator/iocontrol.lua
+++ b/coordinator/iocontrol.lua
@@ -495,6 +495,49 @@ end
 
 --#region Statuses
 
+-- generate the text string for the induction matrix charge/discharge ETA
+---@param eta_ms number eta in milliseconds
+local function gen_eta_text(eta_ms)
+    local str, pre = "", util.trinary(eta_ms >= 0, "Full in ", "Empty in ")
+
+    local seconds = math.abs(eta_ms) / 1000
+    local minutes = seconds / 60
+    local hours   = minutes / 60
+    local days    = hours / 24
+
+    if math.abs(eta_ms) < 1000 or (eta_ms ~= eta_ms) then
+        -- really small or NaN
+        str = "No ETA"
+    elseif days < 1000 then
+        days    = math.floor(days)
+        hours   = math.floor(hours % 24)
+        minutes = math.floor(minutes % 60)
+        seconds = math.floor(seconds % 60)
+
+        if days > 0 then
+            str = days .. "d"
+        elseif hours > 0 then
+            str = hours .. "h " .. minutes .. "m"
+        elseif minutes > 0 then
+            str = minutes .. "m " .. seconds .. "s"
+        elseif seconds > 0 then
+            str = seconds .. "s"
+        end
+
+        str = pre .. str
+    else
+        local years = math.floor(days / 365.25)
+
+        if years <= 99999999 then
+            str = pre .. years .. "y"
+        else
+            str = pre .. "eras"
+        end
+    end
+
+    return str
+end
+
 -- record and publish multiblock status data
 ---@param entry any
 ---@param data imatrix_session_db|sps_session_db|dynamicv_session_db|turbinev_session_db|boilerv_session_db
@@ -616,6 +659,7 @@ function iocontrol.update_facility_status(status)
                 ps.publish("avg_inflow", in_f)
                 ps.publish("avg_outflow", out_f)
                 ps.publish("eta_ms", eta)
+                ps.publish("eta_string", gen_eta_text(eta or 0))
 
                 ps.publish("is_charging", in_f > out_f)
                 ps.publish("is_discharging", out_f > in_f)
diff --git a/coordinator/ui/components/imatrix.lua b/coordinator/ui/components/imatrix.lua
index 1f053a8..c6fd21d 100644
--- a/coordinator/ui/components/imatrix.lua
+++ b/coordinator/ui/components/imatrix.lua
@@ -105,46 +105,7 @@ local function new_view(root, x, y, ps, id)
 
     local eta = TextBox{parent=rect,x=11,y=20,width=20,text="ETA Unknown",alignment=ALIGN.CENTER,fg_bg=style.theme.field_box}
 
-    eta.register(ps, "eta_ms", function (eta_ms)
-        local str, pre = "", util.trinary(eta_ms >= 0, "Full in ", "Empty in ")
-
-        local seconds = math.abs(eta_ms) / 1000
-        local minutes = seconds / 60
-        local hours   = minutes / 60
-        local days    = hours / 24
-
-        if math.abs(eta_ms) < 1000 or (eta_ms ~= eta_ms) then
-            -- really small or NaN
-            str = "No ETA"
-        elseif days < 1000 then
-            days    = math.floor(days)
-            hours   = math.floor(hours % 24)
-            minutes = math.floor(minutes % 60)
-            seconds = math.floor(seconds % 60)
-
-            if days > 0 then
-                str = days .. "d"
-            elseif hours > 0 then
-                str = hours .. "h " .. minutes .. "m"
-            elseif minutes > 0 then
-                str = minutes .. "m " .. seconds .. "s"
-            elseif seconds > 0 then
-                str = seconds .. "s"
-            end
-
-            str = pre .. str
-        else
-            local years = math.floor(days / 365.25)
-
-            if years <= 99999999 then
-                str = pre .. years .. "y"
-            else
-                str = pre .. "eras"
-            end
-        end
-
-        eta.set_value(str)
-    end)
+    eta.register(ps, "eta_string", eta.set_value)
 end
 
 return new_view
diff --git a/pocket/ui/apps/facility.lua b/pocket/ui/apps/facility.lua
index 039c39b..8e338da 100644
--- a/pocket/ui/apps/facility.lua
+++ b/pocket/ui/apps/facility.lua
@@ -98,46 +98,7 @@ local function new_view(root)
 
         local eta = TextBox{parent=f_div,x=1,y=17,text="ETA Unknown",alignment=ALIGN.CENTER,fg_bg=cpair(colors.white,colors.gray)}
 
-        eta.register(fac.induction_ps_tbl[1], "eta_ms", function (eta_ms)
-            local str, pre = "", util.trinary(eta_ms >= 0, "Full in ", "Empty in ")
-
-            local seconds = math.abs(eta_ms) / 1000
-            local minutes = seconds / 60
-            local hours   = minutes / 60
-            local days    = hours / 24
-
-            if math.abs(eta_ms) < 1000 or (eta_ms ~= eta_ms) then
-                -- really small or NaN
-                str = "No ETA"
-            elseif days < 1000 then
-                days    = math.floor(days)
-                hours   = math.floor(hours % 24)
-                minutes = math.floor(minutes % 60)
-                seconds = math.floor(seconds % 60)
-
-                if days > 0 then
-                    str = days .. "d"
-                elseif hours > 0 then
-                    str = hours .. "h " .. minutes .. "m"
-                elseif minutes > 0 then
-                    str = minutes .. "m " .. seconds .. "s"
-                elseif seconds > 0 then
-                    str = seconds .. "s"
-                end
-
-                str = pre .. str
-            else
-                local years = math.floor(days / 365.25)
-
-                if years <= 99999999 then
-                    str = pre .. years .. "y"
-                else
-                    str = pre .. "eras"
-                end
-            end
-
-            eta.set_value(str)
-        end)
+        eta.register(fac.induction_ps_tbl[1], "eta_string", eta.set_value)
 
         --#endregion