BlueSolar Charge Controller PWM DUO LCD&USB 
12/24V  20A
 
Features
- Liquid crystal display.  For status monitoring and set-up
- External Temperature sensor included
- 2 Separate Battery outputs. Charges two separate batteries. For example, the starter battery and the service battery of a boat or mobile home.
- Protections. Protected against reverse polarity connection of the solar panels and/or battery - Programmable battery charge algorithm. Algorithms for AGM, GEL or Flooded lead-acid batteries and LiFePO4 batteries (with internal BMS).
- Two 5 Volt USB outputs. Maximum current of the two outputs combined: 2A