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Question: Does this battery only charge via direct current? What does "Input: DC 5V/ 2A" mean and what type of power adapter is this?
Document: so be warned, this thing is big. it probably wont fit into a tiny purse but its definitely worth the weight if you never EVER want to run out of power on your device. the 2A port allows you to charge as if you were plugged into a wall outlet with a tablet's adapter. i havent even used the 1A port since i only ever need to charge one device at a time. i estimate about 10 recharges to my nexus5 before i need to plug this thing in for a charge.
This power bank is capable of giving the iPad 4 (with a huge 11,560mAh battery) a full charge or more. If your device does not use any of the included tips and can charge via USB, you may use your own USB charging cable with this power bank.
The power switch is recessed just enough that the battery won't start inadvertently; you have to deliberately press the button to turn on the unit to start charging. When the battery has some charge, it will do flow through charging when it is plugged in. This means the battery can be plugged into an AC adapter or a computer, and the device can be plugged into the battery and both will charge at the same time. This is a great feature for overnight charging.
The brushed aluminum front is a nice touch in not showing fingerprints. The unit does not come with an AC adapter. The battery can be charged in most USB ports and with most USB AC adapters. It is probably wise to use the higher power AC adapters like that supplied with an iPad. The minuscule iPhone adapter works, but it takes a long time. The battery is not fast to charge, I've left it charge overnight from 0% left. By morning it is at 100%.
It has a smart display system and really packs a tremendous amount of power. Perfect for recharging Smartphones and tablets or most any other devices that charge via USB; this is a must have for the gadget obsessed.Disclosure: I received a sample product from the manufacturer for the purposes of providing this review. A review in exchange for the review sample was not promised. The views and opinions expressed in this review are my own, and in no way represent the views or opinions of the manufacturer or vendor.
Second, it has very substantial capacity. I used it to charge my iPhone which was about 25% and then my iPad which was about 40% full. I did the iPhone charging from the 1A USB outlet and the iPhone charging form the 2A USB outlet. It fully charged the iPhone in 3 hours and the iPad in 5 hours. The LED lights suggest that the battery was just about half discharged. So, it really does have a capacity of at least 22400 mAh.
I bought this so I could charge my Galaxy Note tablet and my Galaxy S4 at the same time. However, my tablet won't charge off of either port in this so I really didn't need the dual ports. The 2A port is great to get a quick charge on the cell phone though.The battery fell off of a coffee table while the USB cord was plugging in charging my phone. That port is now damaged and cannot be used.
I like this battery. It didn't take long to charge out the box, (it was at 50 percent) but that's thanks to the adapter I bought specifically for this battery. It's an amazing battery so far, however one thing that concerns me is that it stops charging when my phone reaches 98%. I have to replug my phone back in for it to reach 100%.
After doing a lot of testing, I discovered something odd in the charge rates for single USB device charging. None of the devices seemed to charge at the same rate as they would with a 2A AC charger. Digging in a little, I found that my devices were reporting back as being charged from USB, which is limited to 1A. This is a change from the other battery packs with 2A USB ports that I've used/reviewed. Fussing about, I found the culprit - it's the cables.
Mmph. This is why I say I wouldn't use this charger for overnight charges -- unless your device doesn't pull a lot of idle charge or if you've switched it off ahead of time.4: Dual Output. This battery charges two devices via USB. There's an "output 1" and an "output 2" slot, and one time it seemed like the Output 2 slot wasn't working unless the Output 1 had something charging on it.
Answer: The input is a 2A micro-usb to charge. It comes with one, but the iPad 3 wall blocks and computer USB ports work too. It has two outputs, one 2.1A USB (for tablets and Raspberry Pi and high-current devices, the other 1A USB for phones and smaller devices.