cell1 = peripheral.wrap("cofh_thermalexpansion_energycell_0")
cell2 = peripheral.wrap("cofh_thermalexpansion_energycell_1")

function off()
   percent()
   redstone.setOutput("back", false)
   if cellpercent < 150 then
      print(tonumber(cellpercent).."%")
      sleep(20)
      percent()
   end
end

function on()
   percent()
   while cellpercent < 195 do
      print(tonumber(cellpercent).."%")
      redstone.setOutput("back", false)
      sleep(20)
      percent()
   end
   redstone.setOutput("back", true)
end

function poke()
   cell1Stored = cell1.getEnergyStored("cofh_thermalexpansion_energycell_0")
   cell1Full = cell1.getMaxEnergyStored("cofh_thermalexpansion_energycell_0")
   cell2Stored = cell2.getEnergyStored("cofh_thermalexpansion_energycell_1")
   cell2Full = cell2.getMaxEnergyStored("cofh_thermalexpansion_energycell_1")
   cell1Percent = math.floor(100*cell1Stored/cell1Full)
   cell2Percent = math.floor(100*cell2Stored/cell2Full)
end

function percent()
   poke()
   cellpercent = cell1Percent + cell2Percent
end

while true do
on()
--off()
--percent()
print("sleeping...")
sleep(5)
end