Renogy 40A 12/24V MPPT Solar Charge Controller Bluetooth with LCD Screen for AGM, Gel and Lithium Batteries

Maximum power point tracking (MPPT): The Renogy MPPT solar charge controller ensures that every drop of the available current is flushed out of your modules and used for storage. Tracking efficiency reaches 99% and conversion efficiency reaches 98%. Automatic detection: the intelligent controller can automatically detect from 12 V / 24 V DC system voltages (lithium battery should be adjusted manually). The LED indicators show the solar charging and battery operation information, customizable parameters and error codes. 【4-stage safe charging】Renogy 40Ah charge controller has 4-stage charging (majority, increasing, floating and equalisation) of lead-acid batteries and 2-stage charging (most and increase) for lithium batteries as well as lithium reactivation. Full system protection: the self-diagnosis function can assess and protect your system from reverse polarity, overcharging, over-discharge, overload, short circuit and reverse current Remote monitoring: The RS232 communication port allows the Renogy Rover to communicate with the Renogy BT-1 Bluetooth module, which allows you to monitor the status and productivity of your panels via the Renogy DC Home app.