We have battery fill systems with the blinkie and BID module. Our chargers are "smart" chargers that communicate with the BID module on the battery and adjusts the rate of charge accordingly so the batteries can be opportunity charged if need be. The trucks are cycled out on the chargers during the night (I have twice as many trucks as chargers) by our one overnight guy. I teach the operators to check for 100% charge and check the blinkie at the start of their shift. If blinkie is out take the truck to the watering station and fill the battery. At the watering station is a stack of forms that say DO NO CHARGE UNTIL AT OR BELOW 35% with a place for the date that they can put on the truck for the overnight guy. The problems we are having is the overnight guy doesn't pay attention or the operator doesn't put this form on the truck or a temp just doesn't give a crap. Meanwhile the floors look like crap right outside the main office where the chargers are at which is bad when we have big wig tours.