Luminous charger controllers are compatible with different types of batteries, including lead-acid and lithium-ion batteries. They typically have multiple charging stages, such as bulk, absorption, and float, which optimize battery performance and extend battery life. Some Luminous charger controllers also have a built-in load controller, which manages the power output to connected loads and prevents the batteries from being discharged too deeply. Luminous has a range of MPPT charger controllers designed for different solar panel and battery configurations, they also have different models available with varying technical specifications. They usually come with LED indication for different modes of operation, short circuit protection, overcharge protection, deep discharge protection and automatic switching between grid and solar input.