** Although many chargers have a discharge function for balancing (or for Storage Mode) but it is usually limited to 5W only which is a joke (5W is too low). Because if you discharge a battery with large capacity, then you need to wait for a terrible long time (usually the charger will timeout the operation after a period of time). If you need the discharge function, please consider to buy the RCX 150W Discharger OR RCX 50W Discharger. They work super fast for balancing and discharging.