There are 2 outlets in the garage. Recently both have stopped working with the charge cord. The unit displays the red light when plugged in. Sometimes one of the outlet works, then randomly in charging a few hours later it goes red. Sometimes it works all night. I am using the lower voltage setting and still have this problem. Is the fault with my poor electrical in the house, or with the charging unit itself? I can't afford the 220v system right now and am stuck using the slower charge of the basic recharging cord. Tonight I plugged the cord into an outlet outside and it is working so far. I have no idea what is going on and I am not that educated on this. Thank you for help.