17 March 2018

Portable 45W Power for the Google Pixelbook!

I've been using a Google Pixelbook as my primary computing device for five months now. The Pixelbook has a ton of great qualities: it's unbelievably quick, has an incredible build quality, runs Android apps, packs a fantastic touchscreen that folds flat for tablet usage, and (with developer mode + crouton) can handle just about everything I need to do on a computer. I have also been pleased with the battery life; depending on what I'm doing, I tend to get 6-7 hours of use out of a charge.

Of course, even with great battery life it doesn't hurt to have backup power available - and the convenience of dual USB-C ports should make that pretty easy to accomplish, right? I should just be able to grab any power bank which advertises 30W or 45W USB Power Delivery and get started charging on the go, right? 

Unfortunately, it hasn't worked out to be that easy. I've been quietly and casually testing USB-C PD power banks for a month or two now, trying to find one which worked reliably with my Pixelbook. I don't have the skills, knowledge, or resources to do compliance testing like Nathan or Benson, but I used a Plugable USB-C power meter to monitor the current flow and make sure that it didn't drift wildly out of spec. I probably tested a half-dozen power banks before finding one that actually works to my satisfaction. 

I didn't encounter any that I'd consider dangerous; they just didn't work. Some would only draw power from the Pixelbook. One wouldn't pass any power when the Pixelbook was connected. One apparently provided enough power to activate the meter but the measured flow was 0V @ 0A. A few would constantly reboot; one only did so while the meter was connected and seemed to charge the Pixelbook okay without the pass-through meter in-line but that was still clearly incorrect behavior. Without a PD sniffer I don't know why these power banks didn't work but my hunch is negotiation problems. 

All of which brings me to the reason for this post: I found one that works! 

This is the ZMI PowerPack 20000, a 20000mAh battery pack with 45W USB PD output. I was a bit apprehensive since I hadn't heard of the brand before but this has succeeded where power banks from brands like Anker, RAVPower, and dodocool let me down.

While testing the ZMI power bank, I measured a pretty consistent 14.4V @ 2.7A - which exactly matches what my meter reports from the 45W wall charger that came with the Pixelbook. 

It charged the Pixelbook from 67%-87% in about 25 minutes. (The charging rate dropped from 45W (14.4V @ 2.7A) to 30W (14.4V @ 1.8A) somewhere around 85% so that did slow things a little bit. Again, I've observed the same behavior with the original charger). 

As a bonus, the ZMI power bank also has a USB 2.0 hub mode which works great for USB mice and USB storage drives - while still charging the Pixelbook at the appropriate rate.

In subsequent charging tests the ZMI power bank has continued to perform predictably. Again, I'm not able to comment on any of the PD negotiation traffic or USB spec compliance but it seems to me that it is doing exactly what it's supposed to. I haven't had any problems with the power bank trying to charge from the Pixelbook, failing to charge the Pixelbook, or trying to push an unexpected voltage/amperage combination. 

Consistent 45W charging in a small form factor with the added benefit of USB hub functionality at a reasonable $70 price makes the ZMI PowerPack 20000 an easy recommendation.

11 September 2017

Anker PowerLine+ 6ft USB-C to USB 2.0 Cable [2-pack!]

I've long been a fan of Anker's high-quality PowerLine+ cables, and I am pleased to report that the fine tradition continues in the brand's USB-C to USB-A cables for modern Android devices. Today I'm specifically looking at the Anker PowerLine+ 6-foot USB-C to USB 2.0 Cable 2-Pack which I've been using (and abusing!) for the past week or so.

Users familiar with PowerLine+ cables already know that these are some of the most durable cables available. They feature an aramid fiber core for added strength and are wrapped end-to-end with double-braided nylon for extra protection (and, let's be honest here, a pretty cool look). The nylon provides a great smooth feel to the cable and, more importantly, keeps it from getting kinked or knotted. You can fold, wrap, or roll these cables without worrying about them getting damaged or holding permanent bends.

The connectors on either end are built to last as well, featuring a laser-welded metal construction with reinforced stress points to help resist splitting apart like some inferior cables. This is then shrouded in a two-piece protective shell consisting of tough plastic around the connector itself with a soft and flexible boot to reduce stress at the critical junction between cable and connector.

24 October 2016

Anker PowerCore+ 10050: Great balance of power and size

Confession time: I’m a portable charger hoarder. I’ve been compulsively collecting them for years, and have drawers full of the ones I bought, used for a few weeks, and then replaced with something better. Different sizes and features work better for different scenarios, so lately I’ve been carrying an Anker PowerCore 5000 for a bit of ultra-portable juice while on the go or the massive Anker PowerCore+ 26800 while away from extended periods away from The Grid. Of course, the smaller one really only provides enough power for a single extra charger, while the larger is just simply too big to put in a pocket for a quick outing.

Enter the Anker PowerCore+ 10050. To me, this is the Goldilocks of Anker’s portable chargers - packing enough power to recharge my Nexus 6P a couple of times in a surprisingly compact form factor. Like its big brother, the PowerCore+ 10050 features a sturdy aluminum shell finished in a smooth matte black. This model is roughly the same size as my wallet packed with a bunch of unused rewards and loyalty cards, and the curved sides and rounded edges make it easy and snag-free to tuck into a large pocket or bag.

Many other portable chargers leave you guessing at how much of a charge remains (“three lights, so that’s somewhere between 66.67% and 100%?”), but the round button on the side of the PowerCore+ features a ring of ten tiny white LEDs. Just tap the button and the ring will illuminate to indicate the current capacity in 10% increments. The ring also animates while the PowerCore+ is charging in order to quickly convey the status.

24 September 2016

Anker PowerCore+ 26800: Power to get through the week

As I sit down on Friday evening to type up a quick review, my Nexus 6P lets me know its battery level has dipped below 10%. Any other day, I’d be frustrated - but today, I’m immensely pleased. You see, I haven’t plugged my phone into a wall charger, car charger, or even random USB port since Sunday morning.

No, I didn’t install some magical new battery-extending application, manually enable Airplane Mode, or even activate Android’s built-in Battery Saver. Instead, I powered my phone solely off of Anker’s high-capacity PowerCore+ 26800 for five full work days and nights. Nexus devices aren’t exactly known for their stamina, and I use my phone heavily - so trust me when I say getting a week of use without a wall charger is quite a feat.

Of course, all of that juice does come with a price - or, more accurately, two. First, the PowerCore+ 26800 is a well-designed, pleasantly contoured, surprisingly slim brick. It’s big, and it’s heavy. This isn’t a power pack you’ll be likely to slip into your pants pocket for on-the-go Pokemon GO power (unless you’re still wearing JNCO’s, I suppose). And while the included PowerPort+ 1 wall charger uses Quick Charge 3.0 technology to rapidly charge up the battery pack, “rapidly” becomes a very relative term when talking about powering a 26,800mAh behemoth. I know Anker advertises a 6.5-hour charge time, but my experience suggests planning on closer to 8 or 9 hours. Neither of these points are really problems with the unit, they’re just the nature of such a beast and should be kept in mind and planned for.

31 August 2016

Anker Dashboard and Windshield Phone Mount: Secure Mobile Device Mount

It took me the better part of a year (and no small number of purchases) to test and land on the best phone mount to use in my car, and I eventually settled on a generic adjustable mount which fits securely in my CD tray. It’s a pretty good setup for my car (Subaru BRZ), which has a shallowly-sloped windshield far away from my driving position. It’s not a great solution for other cars, though, so I always struggle to come up with a good mount to use when in my wife’s car or a rental while on vacation.

So I was excited to be offered the opportunity to try out the Anker Dashboard and Windshield Car Mount. The mount arrived just before I embarked on a cross-country roadtrip, so I got to put it through an excellent real-world test.

Like all Anker products, the mount arrived in friendly easy-to-open packaging. Included within were the expandable phone holder, sturdy adjustable arm with suction cup base, brief welcome guide, and Anker product feedback card.

Assembling the mount is a breeze. The two pieces are attached by a ball-and-socket joint, so simply unscrew the large plastic nut from the socket on the back of the phone holder, slide it over the protruding ball on the end of the adjustable arm, and screw the nut back down. The joint allows the phone holder to swivel in any direction to accommodate any phone orientation you desire, but the proximity to the squared-off end of the arm prevents the holder from tilting more than ~30° or so in any one direction. As a result, only about 60° of the arm’s impressive 260° rotation range is actually useful if you intend to have your phone’s display roughly perpendicular to the ground. I didn’t encounter any mounting problems due to this limitation, but you may run into trouble if you attempt a more extreme mounting angle.

05 August 2016

Anker PowerCore 5000: Potent Portable Power Pack in your Pocket

So I got a bit carried away with the alliteration in that title, but it's all true!

Like all Anker products, this one arrived in an easy-to-open box without a lot of excess packaging to get in the way. Inside the box, I found the PowerCore 5000 itself, a short (~2ft) micro-USB charging cable, a high-quality mesh carrying pouch, a minimal illustrated user's guide, and the usual "Happy?" product feedback card. I've used many Anker products and can honestly say that they do want their customers to be happy with their products, and they stand by that with a no-hassle 18-month warranty on every single item.

The PowerCore 5000 is a plastic cylinder about the same diameter as a soda bottle cap and a little taller than a soda can. The matt black finish of the cylinder wall looks great in an understated way and - probably more importantly - is easy and comfortable to hold onto. There’s a round power button on the side, as well as three white LEDs used to indicate the current battery level of the charger. Each end is glossy plastic slightly recessed, with the micro-USB input and USB-A output ports on one end and all the obligatory labels and information printed on the other. (On a related note, I love that even an inexpensive product like this features an individual serial number. That’s encouraging to see, and makes me much more comfortable with the company honoring their advertised warranty.) The internal battery causes most of the PowerCore’s weight to be at the label end, which means it becomes quite stable when stood on end for charging.

26 May 2016

Anker Bluetooth Selfie Stick: A Great Mobile Photography Accessory - Not Just for Selfies!

First up, a quick confession: I'm not a member of the target demographic for a selfie stick. I'm thirty, male, and not prone to self-portraiture ("selfies"). Having other people point cameras at my face makes me uncomfortable enough as it is, so I'm not in any hurry to further that trauma. That said, I do have a lot of fun with mobile photography, and am always looking for new techniques to try.

Enter the Anker Bluetooth Selfie Stick. I figured I could use it as a poor man's monopod to stabilize low-light shots and also to provide a bit of extra reach for unusual perspectives.

In traditional Anker fashion, the selfie stick arrives in a friendly blue-and-white box. There's no excess packaging material to dig through, and no horrible plastic blister packs to struggle with and ultimately cut yourself on (thanks Anker!). Inside I found the selfie stick itself, a short micro-USB charging cable, a welcome guide, and a product feedback card.