Usb Chargers.

[ashadocat]

I'm making a solar usb charger and I was wondering what's a safe voltage/amperage to have it output.

 

[basicmark]

USB is 5V + or - 0.25V. A USB host may provide upto 500mA per port but I'm not sure how that applies to a charger.

 

[ashadocat]

thanks

 

[JakeK]

That'd be a pretty cool looking setup.

 

[Squidge]

I wouldn't restrict your charger to 500mA though. Go for an amp if your solar panels are big enough (or whatever you can get from them if not).

 

[Holokauston]

I'm making a solar usb charger and I was wondering what's a safe voltage/amperage to have it output.

A really smart idea might look in to that myself, the ultimate portable

 

[Pleng]

I'm making a solar usb charger and I was wondering what's a safe voltage/amperage to have it output.

A really smart idea might look in to that myself, the ultimate portable


Like all the best ideas (other than the Pandora, of course!) , it's been done before. This one is a tad expensive because it charges most mobiles too. You can get them for around £25 if you only want the usb charging capabilities.

 

[ashadocat]

All you need to do is hook the solar panels from some garden lanterns together and attach a usb connector.
I'm going to use the as epaulets on my trench coat.

 

[JakeK]

Hahaha that would look weird on an epaulet. Look like a Police radio.

 

[Holokauston]

Yeah ain't really no easy and good way to have it one you when you walk, but really useful if you're stranded on a deserted island or post apocalypse when you really can't trust the power grids

 

[ashadocat]

I'm not sure you understand, epaulets don't always look like giant rag ball things. what i'm saying is i'm going to put a slot on the back so they can be put on my shoulders.

 

[sindbad]

I intend to attach such a thingy to a sturdy and somewhat stiff backpack that I'll buy asap.

 

[JakeK]

I'm not sure you understand, epaulets don't always look like giant rag ball things. what i'm saying is i'm going to put a slot on the back so they can be put on my shoulders.

Just like Army ones?

 

[Rayek]

I don't know much about this, but won't the variance in charge from the solar panels adversely affect the life and capacity of the battery? Assuming, of course, that it's not going to be in an optimal charging situation through the duration of the charge.

 

[ashadocat]

I'm no electrical engineer, but I believe that you can trickle charge any modern batteries without any adverse affects. can anyone confirm this?

 

[scarath]

I intend to attach such a thingy to a sturdy and somewhat stiff backpack that I'll buy asap.

You can get solar backpacks from a few places i think. heres one!

 

[sindbad]

I intend to attach such a thingy to a sturdy and somewhat stiff backpack that I'll buy asap.

You can get solar backpacks from a few places i think. heres one!

Thanks, I'll look that up.