Can I charge my K3 using iPad's AC/USB adapter?

[Barty]

@speedlever: the iPad generally does not charge when plugged into your computer USB port. it only does so when you put the iPad to sleep, and then only if you have a newer computer that delivers enough power to the USB ports, and then only slowly. Charge your iPad with the wall charger.

Your kindle you can pretty much charge with anything that will charge a USB device.

[speedlever]

Thanks Barty. Occasionally, I'll charge the iPad via the computer USB ports. It's slow, but it does charge. Yes, I put it to sleep to do so.

[HarryT]

Originally Posted by speedlever

I've always found this confusing.

Just to summarize, it doesn't matter what the power source is, the device will take the charge at its own rate, up to the limit the power source can supply.

So I can charge my K3 from my computer USB ports, the Kindle charger, or my iPad charger... just using the USB charging cable that came with the Kindle charger.

And I can charge my iPad from the computer USB ports, the Kindle charger, or the iPad charger... just using the USB charging cable that came with the iPad charger.

I'll get about the same Kindle charging time and rate from the Kindle charger (0.85A) or the iPad charger (2.1A), and a slower charge from the computer USB ports (0.1A) since the K3 charger only shows 5v/0.85A which is equal to or less than the output of the K3 charger and the iPad charger but more than the output of the computer USB port.

I'll get the fastest iPad charge time and rate from the iPad charger, the next fastest from the K3 charger, and the slowest from the computer USB port.

And all this can be accomplished safely because the device draws the power it needs to recharge, it is not force fed from the power supply. Basically, anything with a USB connection can be safely charged from any USB power source, but the charge time will vary considerably.

Do I have this right?

Not quite. You should not attempt to charge any device that requires MORE current than the charger can supply.

[speedlever]

Originally Posted by HarryT

Not quite. You should not attempt to charge any device that requires MORE current than the charger can supply.

That would mean not charging the iPad from either the K3 charger or the computer. And not charging the K3 from the computer. Right? But you can't help but charge when connected via USB to the computer. I'm not aware of any restrictions connecting the iPad or the K3 to the computer via USB. Are there any?

If that's the case, my best bet is to only use the iPad charger for the iPad and K3. And the K3 charger for just the K3.