I’m going camping, I have sleep apnia, and I need something that can provide power overnight for a 120-240v ~ 50/60Hz, 2.1A [12V - 5.0 A] device. Assume that I can recharge during the day from a power socket. Please bear in mind that while I know that V = volts, Hz = Hertz, and A presumably = amps, my eyes will glaze over when we go deeper into those weeds (I have apparently subconsciously decided that anything engineering-related is to be filed under ‘let my wife take point on that’). The more it costs, the harder it will be for me to justify spending the money, although a portable power pack isn’t a bad thing to have around the house generally.
Available on Amazon? Definite plus. I need this before the end of the week.