ProSportHD Generation 4 boasts a tri-surface heatsink design. This heavy-duty lightweight design delivers significantly faster charging through optimal cooling, while delivering true rated amp output during charge mode. ProSportHD's enhanced microprocessor and software provides digital features including: fuel gauge style Charge Completion Monitor, Charge Mode, individual Fault indicators and three digitally selectable performance charge profiles for Flooded (lead acid), AGM and GEL batteries. HP AGM profile on ProSportHD 20 Dual only. Fully automatic 5-stage charging enhances battery performance while extending battery life. System Check OK and Battery Status indicators provide real time installation and battery fault status. Designed for use in harsh environments with our industrial grade jacketed DC and AC power cables which include molded strain reliefs and wire splitters.