reactor

local lowEnergy = 1000000
local highEnergy = 9500000
local reactor = peripheral.wrap("back")

while true do
   cellEnergy = reactor.getEnergyStored()
   if cellEnergy < lowEnergy then
      reactor.setActive(true)
   elseif cellEnergy > highEnergy then
      reactor.setActive(false)
   end
   os.sleep(10)
end