Maxoak looks good, however I just ordered a second Tallentcell a few days ago. It hits all these bullet points for me:
>12VDC, 9VDC, and 5VDC (USB) outputs, all usable simultaneously.
>Independent dedicated voltage outputs (not switchable or auto-sensing).
>Actual on/off switch (not a momentary switch, typical of auto-shut off function batteries which shut down if power-draw becomes insufficient to keep it on)
>AC or 12VDC re-charging
>Runs my gear all day with power to spare
>Good power meter
>The functions I want, yet simple and straightforward.
https://www.amazon.com/gp/product/B016BJCRUO/ref=oh_aui_detailpage_o01_s02?ie=UTF8&psc=1Can choose various smaller capacities on that Amazon page to suit your needs. There are two standard case sizes into which they squeeze their different capacity offerings. The smaller case versions are half as thick as this one, which may fit better in the bag for some folks. I like this size for maximum capacity in a reasonable size and cost, and I rarely run it down more than about 1/4 down recording 6 channels into a DR680MK2 with phantom powering on all channels.
I just bought a second one so that I can (probably) go an entire 3 day festival while primitive camping without having to recharge.