Multiple Energy Cell Monitor v1.0

modem = peripheral.wrap("right")
monitor = peripheral.wrap("top")
monitor.setTextScale(1)

lastStoredEnergy = 0
energyRate = 0
timeEmpty = 0

while(true) do
    numCells = 0
    attachedCells = {}

    for index,value in pairs(modem.getNamesRemote()) do
        if string.find(value,'energycell',1,true) then
            numCells = numCells + 1
            attachedCells[numCells] = value
        end
    end

    for i = 1,12 do
        storedEnergy = 0
        maxStoredEnergy = 0
        for index,value in pairs(attachedCells) do
            storedEnergy = storedEnergy + modem.callRemote(value, "getEnergyStored","")
            maxStoredEnergy = maxStoredEnergy + modem.callRemote(value, "getMaxEnergyStored","")
        end
        percentStored = math.floor(100*storedEnergy/maxStoredEnergy)
        energyRate = lastStoredEnergy - storedEnergy
        timeEmpty = math.floor((storedEnergy/energyRate)/60)
        monitor.clear()
        monitor.setCursorPos(2,1)
        monitor.write("Connected Cells: "..numCells)
        monitor.setCursorPos(2,2)
        monitor.write("Stored Energy: "..storedEnergy.." ("..percentStored.."%)")
        monitor.setCursorPos(2,3)
        monitor.write("Energy Use: "..energyRate.."/s")
        monitor.setCursorPos(2,4)
        monitor.write("Time to Empty: "..timeEmpty.." min")
        print(i)
        os.sleep(1)
        lastStoredEnergy = storedEnergy
    end
end