Showing posts with label Power. Show all posts
Showing posts with label Power. Show all posts

Wednesday, 11 September 2013

Tylt Energi Sliding Power Case (for iPhone 5)

Pros Convertible design. Adds hours of battery life. Includes two slim cases.

Cons Hard to remove battery pack. Bulbous design. Bottom Line The Tylt Energi Sliding Power Case for the iPhone 5 is a battery case when you need it and a slim protective case when you don't.

By Eugene Kim

A battery case when you need it, a simple protective case when you don't—that's the theory behind the Tylt Energi Sliding Power Case ($99.99 direct). It's similar to the Unu Ecopak, but with a built-in Lightning connector making it far more useful. It's a bit bulbous in design, though, and removing the battery pack is trickier than it should be. Still, it offers superb battery life and at least gives you some more options for use. If you're looking for just an extended battery, a more traditional case like the Unu DX, which is our Editors' Choice, is the better option. It's less expensive, offers comparable battery life, and it's easy enough to find a slim protective case to swap on when you don't need the extra juice.

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Design and Setup
The Energi is fairly unique in the world of battery cases—it's really just a slim protective case with grooves that let you slide on a battery pack with integrated Lightning connector. The slim case provides protection for the sides and back, and the lip is raised above the screen so it'll provide some protection should you put your iPhone face down on flat surfaces. There are cutouts for the buttons and switch along the side, while the top and bottom have large openings for easy access to the rest of the ports and buttons. It's a minimal case that provides just enough protection without adding any bulk. Tylt also includes two slim cases with each Energi; a black case and your choice of blue, red, or green cases. The battery pack itself is only available in black.

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The battery pack slides easily onto slim case, lining up seamlessly with the grooves along the side. With the pack installed, the Energi measures 5.5 by 2.6 by 0.6 inches (HWD) and weighs 3.2 ounces. It's only slightly bigger and heavier than the Unu DX (5.5 by 2.5 by 0.6 inches, 2.9 ounces) and the Mophie Juice Pack Helium (5.5 by 2.5 by 0.6 inches, 2.44 ounces), but the bulbous design makes it feel bulkier than it is.  There's a button around back that activates the power flow, while an embedded LED glows green or red to indicate battery life. Like all iPhone 5 battery cases, the headphone jack is recessed and requires an included adapter for bulkier plugs.

Removing the battery pack can be a bit of a chore and requires some breaking-in. It holds very securely in place, which is a plus, but it took a good deal of effort to release the pack the first few times I tried. It got a little smoother over time, but still required a bit too much force than I'd like to apply to the screen of the iPhone. Tylt suggest a few methods, but I found the best way was pressing your palm against the screen and using the friction between your skin and the glass to force the phone out. It's much easier to take off the Helium or DX and just snap on a standard protective case, which sort of defeats the advantage of the Energi's design.

Performance and Conclusions
The Energi features a 2,500mAh battery pack, which is pretty sizeable as far as iPhone 5 batteries go. The Unu DX uses a 2,300mAh pack, while the Helium uses a much smaller 1,500mAh battery. In my tests, making a continuous call with LTE enabled with Wi-Fi and Bluetooth switched off, the Energi added 8 hours, 7 minutes of talk time to my completely drained AT&T iPhone 5. That's actually the best result we've seen, but not by much—the DX lasted 7 hours, 52 minutes and the Juice Pack Plus lasted 7 hours, 23 minutes.

Though the Tylt Energi Sliding Power Case offers about as much extra battery life as you'll find, it's not the best value and its bulbous, hard-to-remove design is a bit of a bummer. The Unu DX is $20 less and offers virtually equal battery life and a design that feels slicker. If you're looking for the thinnest and lightest, the Helium still offers substantial battery life and costs less than the Energi. The convertible design might appeal to those who don't always need the extra juice, but the convenience is negated by how tricky it can be to remove the battery pack. I recommend the DX and an inexpensive standard case instead, which would let you swap out cases more easily than with the Tylt. 


View the original article here

Friday, 2 August 2013

StandScan Pro Power Bundle

Pros Turns assorted smartphones and tablets into more reliable scanners. Portable. Includes LEDs to illuminate the scan target.

Cons Can't adjust distance from camera to target to change field of view. Bottom Line Basically a box with a peephole on top for a camera to take pictures through, the StandScan Pro Power Bundle turns smartphones and tablets into better portable scanners.

By M. David Stone

Similar in concept to the ScanJig that I recently reviewed, but notably different in design, the StandScan Pro Power Bundle offers a slightly different way to turn your phone or tablet into a better scanner. Compared with the ScanJig, it gets extra points for offering its own LEDs instead of depending on ambient light, but it also costs a little more, which puts the two products on equal footing overall.

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The argument for the StandScan Pro relative to traditional scanners is the same as for the ScanJig. As I've pointed out in any number of scanner reviews, taking a picture with a camera phone or tablet is fully equivalent to scanning. That makes both phones and tablets excellent alternatives to portable manual-fed, simplex (one-sided) scanners, like the Fujitsu ScanSnap S1100 and the Epson WorkForce DS-30. Like the ScanJig, the StandScan Pro makes it easier to get good quality scans with a camera, and it also speeds up scanning for multiple pages.

Like the ScanJig also, the StandScan Pro solves the problem of trying to hold the camera absolutely steady while also filling as much of the frame as possible to take best advantage of the camera's resolution.

Basics
The StandScan Pro is basically a box with a trapezoidal cross section, one open side, a peephole on the top for the camera to look through, and a base that's a little larger than a letter-size piece of paper. The open side lets you reach in to put the scan target in the base or take it out. In addition, there's a strip of LEDs on the inside of the top, providing consistent lighting.

The StandScan Pro actually comes in two versions. The StandScan Pro itself comes with a battery pack for a 9-volt battery. The StandScan Pro Power Bundle also includes a second battery pack for eight AA batteries plus an AC power adaptor. The difference is significant. With the 9-volt battery I measured the brightness at the center point on the scan bed at only about 500 lux with a fresh battery. With AC power and with the AA battery pack, I measured between 1,319 and 1,363 lux, with the reading varying over time.

The range from 1,319 to 1,364 lux isn't enough to see a difference. The drop to 500 lux is. More important, it makes a significant difference in how well an optical character recognition (OCR) program can recognize text in the resulting file. In my tests, using Abbyy FineReader 9.0, the program managed to read text on our standard scanner test pages as small as 6 points for Arial font and 8 points for Times New Roman font without a mistake for images taken with AC power. With the 9-volt battery pack, the accuracy dropped. The smallest size the software could read without a mistake was 10 points for both fonts.

More Basics
As with the ScanJig, there's a fixed distance between the camera and the document with the StandScan Pro, so the field of view for some cameras may not be big enough to include an entire page. Rather than name specific supported devices, the StandScan Pro Web site suggests that you hold your phone 31 centimeters above a letter-size page and make sure it can see all four corners of the page. If it can, it's compatible with the StandScan Pro

In my tests the StandScan Pro worked well with a Samsung Galaxy S III and with an Apple iPhone 4S. However, I couldn't see the entire page with a Motorola Droid RAZR MAXX, an HTC Droid Incredible, or an iPad 2. Another potential issue is that the top of the StandScan Pro box may not be large enough to let you balance your tablet on it. Quite aside from not being able to see a full page with the iPad 2, I had to hold the tablet with one hand to keep it from falling off the box.

Keep in mind also that, as with any scanner, what you can actually do with your scans depends on software, and the StandScan Pro doesn't come with any. There are plenty of apps you can get elsewhere, but the point is that you have to get them separately, and, in many case, pay for them. For my tests, I scanned using the default camera app in the phones and tablets I tested with. I used Abbyy FineReader 9.0 for text recognition mostly because I had it on hand.

The Unfolding Story
Setting up the StandScan Pro involves unfolding it, bending pieces along various creases, and positioning the sides so embedded magnets will hold the overlapping edges together. I found this a little hard to do the first time, mostly because I had to figure out which parts to bend. After doing it once, however, it was easy to break the StandScan Pro down to fold it into a flat, highly portable format, and at least as easy to unfold and snap it back into its working state.

The box is made from laminated heavyweight card stock, which feels a little flimsy when you're trying to put it together. However, it holds together well once all the magnets are properly aligned. The total weight is only about 11 ounces, making it light enough to bring with you without a second thought.

...And Scan
Scanning with the StandScan Pro is simply a matter of snapping a picture. As with the ScanJig, you can put a stack of pages on the document bed and work your way through them, one page at a time, fairly quickly. It took me about one minute to scan 10 pages, which is a match for the ScanJig and a lot faster than with most manual-fed scanners. As with the ScanJig also, scan quality will depend on your phone or tablet and the app you're using.

The StandScan Pro Power Bundle is the sort of gadget that the more you use it, the more you'll appreciate it. Having its own light source is a plus, but then again, having the light source is more important for the closed-box design than for the ScanJig's open design that takes full advantage of ambient light. These two products are so closely matched that choosing between them really boils down to personal taste. That said, however, the StandScan Pro Power Bundle is certainly a reasonable choice for anyone who wants to use his or her phone or tablet as a scanner substitute.


View the original article here

Amped Wireless High Power 600mW Compact Wi-Fi Range Extender (REC10)

Amped Wireless is not as well known a wireless device manufacturer as D-Link or Netgear, but the company continues to put out some impressive consumer networking hardware. Not everything we test from Amped Wireless is a hit, but we are increasingly seeing excellent offerings, such as this Amped Wireless High Power 600mW Compact Wi-Fi Range Extender (REC10).

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The wireless signal booster did not extend a signal quite as far in testing as our current Editors' Choice, D-Link's Wireless Range Extender DAP-1320. However, the REC10 did a good job extending a Wi-Fi network and is one of the most feature-rich range extender/signal boosters we've tested. These advanced capabilities go beyond what your typical wireless extender offers, making this signal booster more intriguing for power users.

Specs
The REC10 is a single-band extender (it only extends the 2.4 GHz band, as do most extenders, since the 2.4 band is capable of longer range), and it supports up to a theoretical 300 Mbps transmit/receive rate. This compact extender plugs right into an electrical outlet. It's got that same kind of plug-in design as D-Link's DAP-1320. The REC10 is a bit flatter than the DAP-1320 and sits more flush against a wall or outlet plate because it's thinner, measuring 2.75 by 4 by 1 inches (HWD).

The device has dual 600mW amplifiers to help boost a Wi-Fi signal. There is also a detachable high-gain 2dBi antenna which screws to the top. Inside is yet another high-gain antenna. The vendor's specifications state that the REC10 can cover up to 6500 square feet.

One hardware feature the REC10 has that D-Link's extender lacks is an Ethernet port. This can be  also add bridging functionality to the extender, for attaching a device like a server or a printer. That port alone may be enough to make you choose the REC10 over the DAP-1320. My only issue is that it's only Fast Ethernet with 10/100 speeds and not Gigabit Ethernet, which is the standard these days.

At the bottom of the REC10 are WPS and reset button. The device supports Windows wireless printing, HP AirPlay, and Apple AirPrint Home Sharing so it can be used in mixed Apple and Windows networks. 

Setup
The REC10 ships with a setup guide and a CD that contains a user manual and an installation video. Amped Wireless does a good job with all the products I've tested in providing clear and detailed setup instructions.

The setup guide first recommends placing the extender midway between your router and the area your wireless clients starts to lose connectivity. Once you plug the device into an outlet, the Amped Wireless logo on the front glows white.

After it's plugged in, you simply connect to the default, unsecured SSID the extender is already configured with, "Amped_REC10." Then, fire up a browser to setup.ampedwireless.com to configure the extender. Again, Amped Wireless does a fine job with consistency in setup across its product line. The setup process is essentially the same no matter which product you install: a booster, router, bridge … and so on.  The documentation does caution you to use Chrome, Safari, or IE (8 and later) for the browser-based setup and not Firefox.

I tested the REC10's ability to extend a Western Digital My Net 900 router's wireless network. It's important that these extenders work with third-party networking equipment; otherwise they are not of much value. Few consumers have only one vendor's networking equipment deployed throughout their home networks. The REC10 worked well with the Western Digital router.

The browser-based setup opens to the Dashboard. This is a central console where you can configure the extender and view status information. To extend a wireless network, click the Scan button.  A list of all wireless networks in range appears within the Dashboard. These networks are displayed by SSID, channel, 802.11x level, security and encryption type, and signal strength.

You then select the network you want to extend by clicking a radio button next to each network listed. This starts a wizard that walks a user through extending a network. You're then prompted to click Next. If your network has a security passphrase, you have to enter it on this screen. Click Next again and the following screen allows you to clone settings from your wireless network, such as SSID and security, with a button click.  You can keep a separate SSID and security set just for the extender. Most users will want to clone. When you clone, the SSID for the extender is given the same SSID as the network you are connecting it to, except "RE" is appended at the end of the extender's SSID.

The last step, as in most of the Amped Wireless devices I test, is to apply settings which took 149 seconds in my testing. Amped Wireless devices tend to have long settings change and reboot times. Comparable devices can often apply the same changes in under 60 seconds, so the REC10's reboot is a bit lengthy.

After the network is extended, the client used for setup is disconnected from the wireless network. I like that the software has an on-screen message indicating the connection drop and also the fact that there is a  drop-down menu within the interface that shows you how to reconnect based on your device's operating system.

Features
I mentioned earlier, the REC10 has one of, if not the most, extensive feature sets of any wireless extender we've tested in the lab. It's on par feature-wise with an access point. These features allow introduction of more advanced capabilities into a wireless network—even if the network has a lower-end router which does not have the same capabilities.

Among the REC10's capabilities are a number of "Smart Features"—as they are described in the interface. Smart Features include Access Schedule: You can set when the extender's Wi-Fi is enabled or disabled by day and time. Remember, this will only set a schedule for wireless clients connected to the extender's SSID, even if settings were cloned from the router.  User access control based on MAC address is another feature.

You can also adjust the output power to limit wireless coverage. You would want to do this if you are trying to limit how far geographically your SSID can be viewed by others. It's also a good way to save on power usage if you are covering a smaller space. By default, the output is set to 100 percent and most users would be advised to leave the default.

Guest networking, WPS, WPA, and WPA2 are all supported. The interface allows for performing device management too, such as reviewing device status and network statistics (for example, amount of packets sent and received), setting up system logging, upgrading firmware, and backing up and restoring the REC10's settings.

Amped Wireless always offers a sharp, consistent, well-designed, easy-to-navigate interface across its product line. As with other devices I've tested from this Amped Wireless, there is plenty of help within the interface. A tab in the upper-right corner provides contextual help and tips as you move through different settings in the interface.

Performance
The REC10 provided decent coverage in our very heavy-interference testing environment. It's not the best we've seen as far as covering at long distance. That distinction goes to D-Link's DAP-1320 and the BearExtender PC Long Range 802.11n USB WiFi Booster both of which managed to register throughput at distances of over 100 feet away from a router using the Ixia IxChariot utility's throughput test.

Even at 100 feet, however, though Ixia could not pick up a signal from the extender, I was still able to browse the Web—albeit rather slowly, from a client connected at 100 feet. It wasn't until I was 150 feet way that my connection to the extended network dropped.

I test these extenders not only at distance from the router, but through glass doors and a couple of sheet-rocked walls. It's a demanding test, and the REC10 did well overall.
Click the image for performance comparisons to other range extenders.

Benchmarks

 Very Good Extender with Extensive Features
The Amped REC10 is a very good Wi-Fi extender. What pushes it to excellence is its easy setup, Ethernet port (although Gigabit would be preferable over Fast Ethernet), and advanced features. It's a four out of five star earner among range extenders. If you are looking for a range extender that also has advanced features plus an Ethernet port, the REC10 is a good bet. If you are just looking for an extender that's dead-simple to set up and that can cover quite a large area, check out our Editors' Choice, the D-Link DAP-1320.


View the original article here

Monday, 29 July 2013

StandScan Pro Power Bundle

Pros Turns assorted smartphones and tablets into more reliable scanners. Portable. Includes LEDs to illuminate the scan target.

Cons Can't adjust distance from camera to target to change field of view. Bottom Line Basically a box with a peephole on top for a camera to take pictures through, the StandScan Pro Power Bundle turns smartphones and tablets into better portable scanners.

By M. David Stone

Similar in concept to the ScanJig that I recently reviewed, but notably different in design, the StandScan Pro Power Bundle offers a slightly different way to turn your phone or tablet into a better scanner. Compared with the ScanJig, it gets extra points for offering its own LEDs instead of depending on ambient light, but it also costs a little more, which puts the two products on equal footing overall.

Compare Selected

The argument for the StandScan Pro relative to traditional scanners is the same as for the ScanJig. As I've pointed out in any number of scanner reviews, taking a picture with a camera phone or tablet is fully equivalent to scanning. That makes both phones and tablets excellent alternatives to portable manual-fed, simplex (one-sided) scanners, like the Fujitsu ScanSnap S1100 and the Epson WorkForce DS-30. Like the ScanJig, the StandScan Pro makes it easier to get good quality scans with a camera, and it also speeds up scanning for multiple pages.

Like the ScanJig also, the StandScan Pro solves the problem of trying to hold the camera absolutely steady while also filling as much of the frame as possible to take best advantage of the camera's resolution.

Basics
The StandScan Pro is basically a box with a trapezoidal cross section, one open side, a peephole on the top for the camera to look through, and a base that's a little larger than a letter-size piece of paper. The open side lets you reach in to put the scan target in the base or take it out. In addition, there's a strip of LEDs on the inside of the top, providing consistent lighting.

The StandScan Pro actually comes in two versions. The StandScan Pro itself comes with a battery pack for a 9-volt battery. The StandScan Pro Power Bundle also includes a second battery pack for eight AA batteries plus an AC power adaptor. The difference is significant. With the 9-volt battery I measured the brightness at the center point on the scan bed at only about 500 lux with a fresh battery. With AC power and with the AA battery pack, I measured between 1,319 and 1,363 lux, with the reading varying over time.

The range from 1,319 to 1,364 lux isn't enough to see a difference. The drop to 500 lux is. More important, it makes a significant difference in how well an optical character recognition (OCR) program can recognize text in the resulting file. In my tests, using Abbyy FineReader 9.0, the program managed to read text on our standard scanner test pages as small as 6 points for Arial font and 8 points for Times New Roman font without a mistake for images taken with AC power. With the 9-volt battery pack, the accuracy dropped. The smallest size the software could read without a mistake was 10 points for both fonts.

More Basics
As with the ScanJig, there's a fixed distance between the camera and the document with the StandScan Pro, so the field of view for some cameras may not be big enough to include an entire page. Rather than name specific supported devices, the StandScan Pro Web site suggests that you hold your phone 31 centimeters above a letter-size page and make sure it can see all four corners of the page. If it can, it's compatible with the StandScan Pro

In my tests the StandScan Pro worked well with a Samsung Galaxy S III and with an Apple iPhone 4S. However, I couldn't see the entire page with a Motorola Droid RAZR MAXX, an HTC Droid Incredible, or an iPad 2. Another potential issue is that the top of the StandScan Pro box may not be large enough to let you balance your tablet on it. Quite aside from not being able to see a full page with the iPad 2, I had to hold the tablet with one hand to keep it from falling off the box.

Keep in mind also that, as with any scanner, what you can actually do with your scans depends on software, and the StandScan Pro doesn't come with any. There are plenty of apps you can get elsewhere, but the point is that you have to get them separately, and, in many case, pay for them. For my tests, I scanned using the default camera app in the phones and tablets I tested with. I used Abbyy FineReader 9.0 for text recognition mostly because I had it on hand.

The Unfolding Story
Setting up the StandScan Pro involves unfolding it, bending pieces along various creases, and positioning the sides so embedded magnets will hold the overlapping edges together. I found this a little hard to do the first time, mostly because I had to figure out which parts to bend. After doing it once, however, it was easy to break the StandScan Pro down to fold it into a flat, highly portable format, and at least as easy to unfold and snap it back into its working state.

The box is made from laminated heavyweight card stock, which feels a little flimsy when you're trying to put it together. However, it holds together well once all the magnets are properly aligned. The total weight is only about 11 ounces, making it light enough to bring with you without a second thought.

...And Scan
Scanning with the StandScan Pro is simply a matter of snapping a picture. As with the ScanJig, you can put a stack of pages on the document bed and work your way through them, one page at a time, fairly quickly. It took me about one minute to scan 10 pages, which is a match for the ScanJig and a lot faster than with most manual-fed scanners. As with the ScanJig also, scan quality will depend on your phone or tablet and the app you're using.

The StandScan Pro Power Bundle is the sort of gadget that the more you use it, the more you'll appreciate it. Having its own light source is a plus, but then again, having the light source is more important for the closed-box design than for the ScanJig's open design that takes full advantage of ambient light. These two products are so closely matched that choosing between them really boils down to personal taste. That said, however, the StandScan Pro Power Bundle is certainly a reasonable choice for anyone who wants to use his or her phone or tablet as a scanner substitute.


View the original article here