Another misleading campaign Sure the box will provide you some power for a short (very short) time. If you connect to external batteries it's no longer portable not to mention you need to connect like batteries as what is in the box (or disconnect the internal ones). It's not going to run a Refrigerator - at least not for long. If you loose power for days, the solar panels will not keep up with demand. I could go on, It is really no different than those storm battery back ups you can buy that you recharge by plugging it into the wall. long run supporters will not be happy.
Some things are meant to be closed. Your mind isn't one of them.