Solar Charger 5vdc in 5.5vdc 800ma out
NOTE: See Tech Note at bottom.
I ordered a small solar charger just to see if it really could keep something charged and running for me without having to use the AC adapter.
I have to admit my first impression of this little item really showed allot of promise.
Let me get to the facts.
It shows a steady 5vdc output not 5.5vdc and the amps (m) are just about 800.
This isn't enough to power a Tablet but it sure should be able to bring a smartphone back to life.
The one thing I like the most about this charger is in a overcast day it still seems to charge.
My plan is to mount this in my car on the visor but not facing the sun directly. I need it to charge like my Solar Keyboard using reflective light not direct.
It seemed to work will indoors with normal room lighting. It does good at changing my Tablet when the tablet is off. The 800mah supply just isn't going to cut it when the tablet is on. It requires 2500mah.
I also purchased a few 9v cells to jazz up the current levels. I'm looking to see if I can build a in car visor indirect sun solar charger that would keep a few 1,500mah batteries charged up as backup chargers for the smart devices.
My guess is I need to charge the tablet and phone at least twice a week from the car when the car is off.
I'll be using some old cells out of laptops as my storage.
This unit out of the box will not power and charge a tablet but did nicely on my flip phone. You must look at the amount of current you need or amps. My tablet requires 2,500 to charge while I'm working with it. Other than than and while off the 800mah will charge at a very slow rate.
For the $16 I spent I going to say it's worth it for small devices. I'ts actually about the size of a smartphone.
I'll post a few more details and charge times once I get it setup in the car after our rainy days pass.
This was purchased from SPEMall.com.
It has a small battery that supplies current when the solar is not.
Well, it's been a few weeks and if anyone can talk about this item it's me.
First of all, plan on 3 days of at least 4 hours of sun to bring this unit up to a full change. You can cheat and use the power cord and the charger but if you are like me that's something you're trying to avoid. My AC changer has a bad contact so I used it off my acc. 12Vdc in the car.
Now, one really interesting thing happened which a couple of diode should resolve.
When I setup the solar charger to charge my Cellular phone after sun down it was working fine to start. I had a full charge on the solar storage power cell and the phone was showing that it was taking a charge.
By the next morning you would think the phone was charged and the solar battery would most likely be dead. Say that in reverse and that's what happened.
The solar charged the Cellular phone and when the solar battery was low it use the cellular phone as a power source.
Go figure the charger would charge until a select point the draw.
I'll be in Modification Mode this weekend and will rework the curcuit so this doesn't happen again. Might need to do a video on how things are working out for this little charger.
Overall I still like the idea and the item.