Not much on line for a manual. IF the evpeak is really capable of 1350 watts, that's a minimum of 12 amps at 110 v. Probably a bit more, due to conversion inefficiencies. Many/most house circuits are 15 amps. So find a circuit to plug in to that has nothing else on it. No idea as to the design of this system, but a well designed one would draw about half if dialed down to 12v. If it is blowing breakers with nothing plugged in, it is a fire or electrocution hazard, and I would NOT use it, trying for a repair, replacement or a refund - or trash....
And..following up on init4fun - does it not blow on its own, but does with the charger plugged in, but not charging anything? Then it is very possible the charger is defective. If not, then you are probably trying to charge too much at the same time, the devices are likely fine, but the house isn't.....try reducing the number of batteries, the sizes, or both, that you are trying to charge and see if it maintains. If such is the case, then it is time to call an electrician, and have a dedicated 20 amp house circuit run to wherever you want to charge things....
Last edited by tedsander; 11-28-2020 at 04:42 PM.