Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: Could I charge ipad mini and iphone 4 on this charger?
Document: The directions are very clear, if you have something like an iPad and your phone plugged in and it's not charging right, take one out and charge the devices one at a time. It's the same as a battery charger taking longer to charge 4 batteries than 2. The device's plug is a 3 prong grounded plug that is accessed by removing the cap on the bottom.
This charger appeared to have no trouble charging my iPad (2.1A) and my iPhone simultaneously. HOWEVER, the write up states, "The RCA Portable Power 2 USB Charger... has 2 USB inputs at 2.1 amp and can charge 2 devices at once." which would indicate that you can charge two iPads simultaneously. The charger is not rated for that.
Based on the above pros and cons, this charger is best used as a home charger. I would rate it 4.5-star had Amazon allowed finer rating. For travel, the original iPad charger with its fold-in two-prong AC plug and 100V - 240V input range is still my first choice.
If you are like us and have devices in every corner and using every outlet in your house, then this will be a welcome addition to your arsenal. Or, if you travel, this will let you leave a plug or two at home.This charger accepts two USB devices and even allows devices that require or benefit from a larger amperage - up to 2.1 amps. You can even trickle charge your ipad and iphone at the same time. Want to speed it up?
If it came back, it would be too annoying to use.--no power/tripped indicator. You could conceivably overload it, have it shut down and fail to charge, and not know it until too late. Alternatively, I used the charge indicators on my devices to see if it was charging.For the price (currently under $8), I highly recommend this charger to anyone needing 2.1A of charging current or the ability to charge two things simultaneously.
Great little device that is perfect for travel. Instead of bringing two charger plugs for my iPad and iPhone this one is more compact and can take care of both.
Just what I was looking for and no surprised. Does iPhone 5 and iPad 3 together no problem. Compact and not too ugly.
Found this by just browsing at walmart. can't believe it charges my iPad for under US$10.00, but only one iPad at a time. The dual USB charges my iPhones great, right now my iPhone 5 and my iPhone 4S are reaching 100% from this one charger at the same time. :-)Oops, forgot to note, once in a while it'll say on the iphone 'this acc. is not supported', just unplug and replug, works just fine.
This is a great little device that works simply...and simply works! It has one high-power plug for charging our iPad and iPad Mini, and another for charging smaller devices like our iPhones. Easy to charge two devices at once. We leave this plugged in in the kitchen, with USB cables attached, and just charge up our devices when we're getting ready in the morning. We haven't tried using this for travel yet--just keep forgetting to take it.
Yeah, you can look at your devices to see if they are charging, but why should you have to? They could add a little light to the device itself.For me, the good outweighs the bad. Yes, I would spend my own money on this to get a charger I can leave at work. It is cheaper than Apple's wall charger, and about the price of Amazon's Kindle wall charger.A good deal on a product that works.
Answer: Yes. *NOTE*, the iPad Mini will only recharge with the reg. 1.1amp port *not* the 2.1 amp port.  The iPhone 4 will recharge with either port, but if you use a non-OEM cable the 2.1amp port with have that 'not supported acc. warning'...however that might change to just a warning and will still allow for a charge, with iOS 7.x.