client computer 1

-- Replace with the appropriate modem address and main computer ID
local modemAddress = "left"
local mainComputerID = 16

while true do
    local energyInfo = peripheral.call("modem_", os.getComputerID, "getEnergyInfo")
    if energyInfo then
        local rfPercentage = math.floor((energyInfo.energyStored / energyInfo.maxEnergyStored) * 100)
        rednet.open(modemAddress)
        rednet.send(mainComputerID, rfPercentage)
        rednet.close(modemAddress)
    end
    sleep(5)
end