I have never really researched it but most inverters out put a square wave vs AC uses a sine wave. As a 30 year RV owner and one that uses a good inverter/laptop in my car. I have never had a issue.
I do make sure I have a good battery as a filter and a surge protector might be a good idea. 5 years ago I camped in the RV for two months using the generator daily to charge phones and computers
and used my phone to tether with no issue. my wife used her CPAP on hot nights with the Generator. I assume cheap inverters/ Generators could be a issue but with 0 issues I would say Go for it and enjoy
tech in the woods. Todd

On Tue, Jul 10, 2018 at 6:08 AM, Ted Gould <ted@gould.cx> wrote:
On Jul 10 2018, at 12:30 am, Victor Odhner <vodhner@cox.net> wrote:
My wife has a tablet (Sansung SM-T530NU Nook) that can be charged in my truck. But it rejects every attempt to load from the Macbook via USB cable or BlueTooth — the devices see each other, but can’t quite get a connection.
Only remaining possibility seems to be a micro SD chip.

Many of the tablets do special negotiation on power, and the chargers and others expect that. I'd recommend having a USB condom in general, but in this case it'd probably also solve the negotiation problem. These are the ones I use.


Also there are many extended charge batteries provided by Anker which may work for your needs. I was looking at buying this one for my Dad who has a CPAP machine and would like to be able to camp. I imagine a smaller one would work depending on what you want.

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Todd Cole
Ubuntu Arizona Team
2928 W El Caminito
Phoenix AZ  85051-3957