Does anyone know of a USB power bank that will allow charge through?
In other words, one that will allow you to charge a device while the power bank is plugged in and charging?
Most will do either charging of a device or charging of the power bank, but not both at the same time.
I’d like to have one for my ForeFlight Ipad in the 340. That way I could plug the battery bank into the plane, and the Ipad into it and keep both charged and have backup if the charging port goes wonky..
I’ll start checking around and see, maybe Sporty’s tech people will know. Let me know if you find out one that can do that.
Are you thinking of a USB or a UPS?
USB
https://www.pcmag.com/picks/the-best-portable-chargers-and-power-banks
sadly, most of those don’t actually charge-through, but thanks.
https://www.tanga.com/deals/f2fc9c91b497/aduro-wireless-qi-10-000-mah-power-bank-with-dual-usb-ports
I keep it plugged in, keep a charging earbud case plugged in to it most of the time, occasionally plug in rechargeable noise canceling headphones, and wireless-charge my phone occasionally on the top. I don’t know yet whether it’s really 10,000 mAh, and no clue whether an iPad is happy with it — they’re weird sometimes.
I will have to try that one.
Try looking at Mophie powerstation PD
https://www.zagg.com/en_us/powerstation-usbc-pd
When plugged into the wall and a device will charge device first then battery back.
Kindred products with other connectors available
You can buy a cigarette lighter charger that has two USB ports on it. Cost $10 or so. It is what I use in my plane.
I have one of those. I just want some additional backup.
Besides, my lighter is 28V and most of those adapters don’t last that long at that voltage…which is why I want the power bank for when they die.
https://www.powerbankexpert.com/power-bank-with-pass-through-charging/