Powerbank for FP3

[BertG]

I am not really sure, that I get, what you mean.
If you charge the powerbank by solar-panel only and just when riding your bike, you will most likely never get the powerbank fully charged.
I posted my opinion on the two different kinds of powerbanks here:

Waka waka external charger for fp2

Still have to test it, but I do not expect to find any difference in the ability to charge the FP. I own the Power 10 as well as the Power+ and I absolutely love them. The Power 10 really is a heavy-weight but feels very good and sturdy. In my opinion the Power 10 and Power+ are really hard to compare, as they aim at different fields of usage. The Power+ is lightweight, has an integrated solar-panel, a footstand to position it facing the sun and a torch. The torch can be used with the footst…

All waka-waka powerbanks can be charged using the power line as well.
The Power+ offers 3.000 mAh and a quite bright flashlight, that can be used as a light e.g. when camping. You most likely will not get the FP3 fully charged with this powerbank, as I was able to charge the 2.440 mAh battery of my FP2 with my (older) Power+ with 2.200 mAh only up to 70 or 80% (if I recall it right).
The Power 5 and 10 are rather big “bricklike” rugged tools, that offer 5.000 / 10.000 mAh. They can be used to charge more than one device and offer a port for fastcharging.
The solar panel of the Power+ is integrated into the powerbank and therefore quite small; the one for the Power 5/10 is a big foldable one (not exactly made for bike-use, though you might fix it on your back. )

If it’s sunny outside (also if not), place the solarpanels in the sun (light) and they will start charging. I never exactly tested how long it takes in ful sunlight, to charge from zero to 100%

Does this answer your question in any regard?