There are several types of FPV drone battery chargers available, including standalone chargers, balance chargers, and all-in-one chargers. Standalone chargers are the most basic type, and simply provide a way to charge the battery without any additional features. Balance chargers are more advanced, and include a feature called balance charging, which helps to ensure that all of the cells in a lithium polymer (LiPo) battery are charged to the same level. All-in-one chargers combine the functions of a charger and a power supply into a single device, allowing the user to power the charger and charge the battery at the same time.