Victron BlueSolar PWM-LCD&USB 48V-20A - Bargain Bin

Liquid crystal display For status monitoring and set-up
Load output Over-discharge of the battery can be prevented by connecting all loads to the load output. The load output
will disconnect the load when the battery has been discharged to a pre-set voltage.
Some loads (especially inverters) can best be connected directly to the battery, and the inverter remote
control connected to the load output. A special interface cable may be needed, please see the manual.
The connect and disconnect voltages are adjustable.
Day/night timing of the load output This option allows for a pre-set ON-time after dusk.
Programmable battery charge algorithm Preprogrammed algorithms for AGM, GEL, Flooded or LiFePO4 batteries (with internal BMS only)
Two 5 Volt USB outputs Maximum current (both outputs combined): 2A