Zamp solar 120P Charge Kit The Zamp Solar Portable packs a big punch with a staggering 6.84 amps, large enough to handle larger battery banks.will perform up to 30-40 amps per day. The system has been designed to work well with dual 6 volt or 12 volt battery systems, this system will perform up to 30-40 amps per day. Connecting your portable solar kit to your RV has never been easier. You can connect directly to the battery with the alligator clips or you can remove these clips to reveal an SAE port that plugs directly into a Zamp Solar sidewall solar port.