Original new brand skyfine 100amp control charger seems to be rare model. it can provide details on similar 100A MPPT solar charger controllers that can match what you are looking for. Give features to expect. Rated solar charge current,100A suitable for charging, battery bank for charging 12v,24v,36v,48,systems. Maximum power Point tracking (MPPT) efficiency up to 99% or 99.9%. Ensuring maximum energy harvesting from solar panel, compatibility work with various battery types, including lithium ion phosphate (lifepo4),lead acid AGM, and gel batteries.