I don't know what I don't know. Can anyone recommend a resource that explains and compares the differences? Any general opinions on the usefulness of these things? Or recommendations? I want something that will: 1. start my TV when the batteries die and I'm nowhere 2. charge gadgets when I'm home and the power is out 3. ? This one seems like it would work and appears to be well-regarded by truck owners (and can be found for less than the MRSP ): https://no.co/gb150 If anyone happens to be familiar with this particular make, I'd appreciate your thoughts. Thanks!