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What kind of setup can take portable solar USB power & charge a AA wall charger?

What kind of setup can take portable solar USB power & charge a AA wall charger?


Old 07-08-18, 01:36 PM
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What kind of setup can take portable solar USB power & charge a AA wall charger?

Forgive me right up front for not knowing the correct terms so I can explain what I am hoping to do. I am new and learning. TIA.

I have a portable solar panel that generates 21w of power, seen here: https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1 . It has a USB connection wired into it that will accept a USB cord to charge small devices via USB. Separately, I have a Panasonic wall charger device (model BQ-CC75) seen here: https://smile.amazon.com/gp/product/...?ie=UTF8&psc=1 that will plug into a wall outlet to charge 1-4 rechargeable Ni-MH AA batteries. I would like to figure out if it is possible to find a way to connect the solar panel to the wall charger device in order to charge the AA batteries by solar. I know there are other devices out there that are designed to charge AAs from a solar panel, but I am wondering if the Panasonic can do it using an appropriate connection, and if yes, what that connection type might be.

So far, I have considered running this connection cable: https://smile.amazon.com/gp/product/...87IR8ISH&psc=1 that would go from the solar USB connection to a cigarette-lighter plug, which is connected to a "wall outlet" style plug, such as this: https://smile.amazon.com/gp/product/...KIKX0DER&psc=1 or this: https://smile.amazon.com/gp/product/...KIKX0DER&psc=1 , and from there, plug in the Panasonic AA charger ... the hope is that this would charge 1-4 AA batteries successfully via solar.
  1. Would this approach work?
  2. If not, what would work?
  3. If it works, but there is an easier way, what would that look like?
Thanks so much in advance for your advice, and thanks again for forgiving me for not knowing enough to figure out the good and bad of this idea on my own, and for not knowing the proper terms to describe things.
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Old 07-08-18, 05:08 PM
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Welcome to the forums.

The more times you convert power the more losses you have. You are only dealing with 21 watts of charge power and that is probably in very good sunlight exposed conditions.

In looking around.... Panasonic offers a USB powered charger for four cells. It looks like it should be able to plug directly in to your solar charger. It's called the BQ-CC61. Portable charger with USB port. I don't see it at amazon.

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