Charge regulatorThe charge regulator is the manager of battery-powered systems. It controls the electrical flow between the solar module, the consumer and the battery. The charge regulator protects the battery from overcharge and depletion, which maximises battery life. Additionally, it provides operating data and fulfils very important control and safety functions.
As long as the solar battery is not fully charged, the regulator allows maximum electrical flow. When the battery is fully charged, the charge current must be limited. Simple regulators will merely disconnect the electric solar module from the battery.
High-end regulators provide additional functions. Displays provide the charge state and the incoming/out-going energy flow. Further possible functions are a warning alarm, an anti-theft device, remote data collection, internet connectivity, input assistant and a surplus-management function which makes energy consumable that would be otherwise wasted (e.g. overcharge protection). | 
Deutsch
