Thanks to everyone who responded.  FWIW, considering all advice received, I
have ordered an Anker 26800 + 45 PD battery.  If works as claimed, and as
reviewed (for what those are worth) it should handle us for perhaps two
weeks off grid.  We are not concerned about phones, usually no service at
our favored camping locations anyway.  Bonnie's insulin pump is what
matters.  And of course, we can always return to grid if need be, or charge
off the van.  We are still looking at bigger options to provide additional
power for other purposes.  The Anker also meets the TSA requirements for
carry on, though not for checked, baggage.  mcneely

On Fri, Nov 19, 2021 at 6:11 AM Anthony Egeln <regnsuzanne@yahoo.com> wrote:

> Go on YouTube and look for a young content creator named Will Prowse.  He
> has many videos about solar generators and modern battery technology.  And
> quite unbiased in his critiques.
>
> Anthony
>
>
> Sent from Yahoo Mail for iPhone
> <https://overview.mail.yahoo.com/?.src=iOS>
>
> On Thursday, November 18, 2021, 22:43, David McNeely <
> davmcneely40@GMAIL.COM> wrote:
>
> Almost Friday, and actually Vanagon related, in a way.
>
> Do any of you use "power banks" when traveling and camping in your
> Vanagons?  I am talking about 2 different animals here.  First, those
> small, rechargeable batteries sold mainly to folks who just can't stand to
> be without phone power for even minutes.  I have a different need.  My wife
> is diabetic, uses an insulin pump, and has to recharge that pump every 2-3
> days.  One of those small batteries should be useful to extend our stays
> out and about, if we can get one that has enough power to charge the pump
> multiple times.  Lots are advertised and promoted, but most carry totally
> unknown "brand names."  Any recommendations?
>
> Second, big power banks, the kind supposed to replace generators for power
> outages and for camping.  Any experience with those?  Again, most that I
> see carry unknown "brands."
>
> mcneely
>
>