[Galaxy S6 Edge+ Accessories] apurva.giri:
After a 54W Desktop Charger a few weeks back, this is my second review unit from Tronsmart. It's been 6 days since I'm using this product and I'm definitely inclined towards writing another great review on their product.

Before I start with the review, here's the product listing on Amazon

Like most of my reviews, I'll split this up in following categories:-

1. Packaging & Content

2. Build Quality & Design

3. Functionality

4. Pros & Cons

I'll go through each of them, one at a time.

Packaging & Content

The Tronsmart Rapid Car charger came well packed in a colorful display box with every detail written all over it. Unlike last time, this box isn't one of those recyclable brown boxes but this one do give an impression of a renowned brand too. And there's seal on the box (It's kind of important to me).

[IMG="Box"]http://i.imgur.com/clWkWEG.jpg[/IMG]

Following are the in-box items you get:-

- Tronsmart Rapid Charger ( 2 x USB Output )

- 2 x USB Cables (premium quality)

- User Manual

- VoltIQ Info Card

[IMG="Contents"]http://i.imgur.com/tK6Ywo4.jpg[/IMG]

Even if it makes sense to give 2 USB cables since the Rapid Charger has 2 USB Outputs, honestly, I didn't expect that. And both the cables are premium built and long enough to use confortably even while charging (unless you have cigerette lighter port located somewhere far away from the dashboard). Infact, as per Tronsmart, the USB cables are custom made standardized 20AWG cables (thick cable for less voltage drop and strength) specifically designed for Quick Charge 2.0 Ports.

[IMG="2 USB"]http://i.imgur.com/MrmFA3y.jpg[/IMG]

Moving on to the next category...

Build Quality & Design

I'm very picky when it comes to design & build and let me say this outloud, so far, Tronsmart hasn't dissapointed me at all. The rapid charger's quality feels top notch and I couldn't find any flaw in the finishing of the product either. With it's matte black surface, green colored USB Ports and engraved brand name, the charger looks absolutely gorgious. Look at the images and decide for yourselves:-

[IMG="Design"]http://i.imgur.com/jCwk006.jpg[/IMG]

Overall, this is a beautiful charger which is small (for a 2-Port charger), very light and yet feels very sturdy in hand.

Functionality

Inspite of it's small size, this rapid charger packs 2 USB Outputs with both having Qualcomm Quick Charge 2.0 Certification. In other words, it's a tiny powerhouse which can charge 2 of your power hungry USB devices rapidly and simultanously. The specification on Amazon listing claims that this charger can charge 2 QC2 devices simultanously at 9V/2A (max) and for non QC devices 5V/2.4A (max). With that said, one must know that a phone incapable of handling such high power (mostly old phones) might be adversely affected due to high current/voltage flow. And that's where VoltIQ comes into play.

The VoltIQ

The voltIQ is a smart circuit that controls the flow of current and voltage by identifying the connected device and it's maximum supported power input. For example, a 3 years old Nexus 4 doesn't support rapid charging and it could draw only upto 5V/1.25A (avg) max power. Even, the genuine adapter that came with it had rated output of 5V/1.2A. So what happens if I connect it to Tronsmart Rapid Car Charger ? No, it certainly doesn't damage the battery of nexus 4 thanks to VoltIQ which detects that the device can draw only upto 5V/1.2A and delivers the same power for efficient charging. Similarly, when a rapid charging capable device is connected, the charger delivers an optimum fast charging output to charge that device at a much faster rate.

[IMG="VoltIQ"]http://i.imgur.com/0im3jDi.jpg[/IMG]

To validate the claims made by VoltIQ, I tested the review unit with an iPhone 6 Plus, S6 Edge+, ZenWatch and Bluebux X. Following are the results of the OEM charger output and Tronsmart Rapid Car Charger:-

[IMG="iphone & edge+"]http://i.imgur.com/SgAtYj1.jpg[/IMG]

[IMG="http://i.imgur.com/68zWnt0.jpg"]http://i.imgur.com/68zWnt0.jpg[/IMG]

[IMG="http://i.imgur.com/I1UW2FT.jpg"]http://i.imgur.com/I1UW2FT.jpg[/IMG]

[IMG="http://i.imgur.com/2yKUtfi.jpg"]http://i.imgur.com/2yKUtfi.jpg[/IMG]

Although I'm more than satisfied with the performance of this tiny charger, there's one thing that I'm not fully convinced about. The Amazon description of the product says this adapter would deliver upto 5V/2.4A for Apple products, however, my iPhone could only draw 5.12V/1.15A which is significantly lesser than the power advertised. But then again, the description could have been for an iPad since I know the iPad comes with a higher power rated adapter compared to an iPhone. I'm just going to ignore this because my iPhone is charging faster than it's original adapter(Yes, iPhone 6 Plus supports fast charging via iPad's adapter).

Update [9/19/2015]: Just heard back from Tronsmart. Here's what they said on charging Apple products:-

Because VoltIQ technology will automatically detect the demanding current for the devices needed. For the iPhone 6 with empty battery capacity, Tronsmart charger will offer the largest currect 1.5A, for iPhone 6 Plus, the largest current offered is 1.8A, and for iPad, the largest current is 2.4A. So in the description it says this adapter would deliver upto 5V/2.4A for Apple products.

When I was charging the iPhone 6 Plus, the current drawn initially was 1.25A (at 90% battery charged) and finally settled for 1.15A (at 93% charged) few minutes later. So the explanation do make sense. As I suspected earlier, only the iPad utilizes the full potential of this charger but either way, the iPhone 6 Plus charges way faster than it's original adapter and it's battery is definitely not affected since it supports fast charging (high current input) - source

Overall, if you're looking for an affordable car charger, this is the way to go. And if 2 ports aren't enough to juice up all of your devices while you travel, you can look into several other Tronsmart Accessories which offer upto 4 USB Outputs on a Car Charger.