Battery life remains a huge concern for savvy smartphone shoppers. Opportunistically charging a phone and worrying about making it through an entire day with just a single charge cycle is a common complaint as well. The HTC One max addresses some of the complaints myself and others had with charging on the HTC One which charged at only 1 amp, instead the One max charges at up to 1.5 amps. Although I wasn’t sampled it, the One max box will also include a 1.5 amp charger from HTC that’s slightly taller than the previous generation. This definitely helps offset the increase in charge time that would’ve resulted given the 43 percent larger 3300 mAh 3.8V (12.54 watt hour) battery.

Device Charge Time - 0 to 100 Percent

The HTC One charges a bit faster with the latest updates, however the linear region of the charge curve is entirely dominated by that 1 A charging maximum. With the 1.5 A charging in the One max we actually see considerably faster charge times in spite of the larger battery. HTC continues to use BC 1.2 to the best of my knowledge for signaling.

To assess battery life, I ran the One max through our battery life test suite. Our battery life test is unchanged, we calibrate the display to exactly 200 nits and run it through a controlled workload consisting of a dozen or so popular pages and articles with pauses in between continually, until the device dies. This is repeated on cellular and WiFi, in this case since we have an international model of the One max that lacks the LTE bands used in the USA, that’s 3G WCDMA on AT&T’s Band 2 network. The talk time call test is self explanatory and also unchanged.

AT Smartphone Bench 2013: Web Browsing Battery Life (3G/2G)

AT Smartphone Bench 2013: Web Browsing Battery Life (WiFi)

Cellular Talk Time

The results speak for themselves, the One max lasts quite a long time on battery, even with a large display. I expected the One max to lose to the Note 3 on the cellular test initially, but it posts an impressive result. I suspect display power might be the reason here between AMOLED and the more pragmatic LCD in the One max. I measured the One max with the flip case on as well, and it adds about 20 percent more battery time to the device. I'm curious to see how the USA-bound variants with LTE fare, but the One does impress with excellent battery life. 

Performance and Silicon Display
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  • rabidkevin - Tuesday, October 29, 2013 - link

    What you are missing is that OEM's want internal only storage to CONTROL THE MARKET! Charging premiums on space for outrageous amounts. It has nothing to do with user demand. Why would anyone turn down 32gb of extra space for 30 bucks?

    I still have a galaxy s2 that I just FINALLY paid off after 2 years. I'm not ready to make payments for 2 more years when I have a perfectly good working phone in my hand.
  • Black Obsidian - Tuesday, October 29, 2013 - link

    You're rabid alright, Kevin.

    The vast majority of users don't want expandable storage, because the vast majority of users aren't using all of the storage in their (overwhelmingly base-model-storage) phones as it is. Why is this? Well, because the vast majority of users aren't carrying 1,000+ hours of music around with them at all times. Hell, I'd be shocked if the majority of users even HAVE 16GB of music in the first place!

    Us geeks aren't the whole smartphone market. Pre-iPhone, we absolutely were. Now? To say we even account for 5% of the overall market would be overly generous, probably by a factor of 10. We're a tiny, TINY fraction of the market, and even then, only *some* of us care about removable storage.

    The OEMs might enjoy milking people by charging them $100 for each $20 increment of flash, but relatively few people are bothering to pony up for 32 or 64GB even where it is an option. If you combined all the people who actually use expandable SD *and* all the people who upgrade from base 16GB devices with no expansion, I doubt you'd reach even 10% of the market. Or 5%, for that matter.

    (relatively speaking) Nobody cares.
  • Klug4Pres - Tuesday, October 29, 2013 - link

    Brian, some people want removeable SD cards, and what's more the ability to use them is, objectively-speaking, a useful feature with almost no down-side (if we ignore business decisions to economise by reducing internal storage on phones with this feature, and what Google sees as the inability of users to deal with more than one storage location). If the HTC One has a particular design that would be compromised by allowing SD cards, that may be so, but there are other possible designs, and I doubt you could argue that they would be systematically inferior.

    "Being deprecated by a platform" is not a good reason not to support them. Google obviously has a vested interest in tieing people to the Cloud, so we shouldn't care what Google thinks about this.

    You have argued, persuasively, that removeable batteries do involve more of a trade-off, but again some people are more than willing to accept that trade-off because of how they wish to use their device, and because they may wish to make use of the device for longer than the expected service life of the battery.

    Oh, and I'm calling flamebait on the "going the way of the dodo" comment.
  • Jedi2155 - Wednesday, October 30, 2013 - link

    I take issue with the comment on internal batteries being bigger when sealed in versus removable. In terms of energy I have yet to see this to be true. All the galaxy phones have continued to have removable batteries yet remain in an incredibly small form factor. My Note II has nearly the same energy capacity (~3100 mAh, Note 3 ~3200 mAh), in a smaller and thinner form factor than the 3300 mAh of the HTC One max. I personally believe most of the reason for an internal battery is simply laziness in design. It simply takes a lot more engineering and design work to include a removable battery versus not. I completely believe its possible to cram a removable version of the same 3300 mAh battery in the phone with the volume they had available in this phone. I bet they could have increase the battery volume even further if they put more effort into it.

    My primary point is that, while going internal does offer some volumetric benefits, majority of the manufacturers do not exploit it for the simple reason that it costs more.

    I'm not even going to touch the microSD comment (even while quite possibly true, many geeks and their gf's still demand it).
  • Steven JW FCK - Monday, October 28, 2013 - link

    So what is wrong having "dumb manually managed storage?"

    It sounds to me like a feature, and a feature I would happily want to have in its usefulness in being partitioned off from the rest of the phone.

    And build quality? Really? The way you talk about build quality sounds more like you are interested in how pretty it looks to you and other people? Your hand is supposed to be around the phone when you use it in the first place, so most of this phones plastic surround will be invisible to you and others, so why are so fussy on wanting a pretty phone, over a feature packed phone? Would better build quality translate into better drop-ability? Not at all! That would be an absurd conclusion to blindly believe.
  • Dentons - Monday, October 28, 2013 - link

    But Brian, you don't focus on build quality, not really. Your critique suggests an overwhelming devotion to the fashion of these devices. You're actually neglecting the underlying technology in many cases to focus instead on things one suspects most Anandtech readers could care less about. Honestly? How much time did you devote to the Gold iPhone in a recent podcast? Yes, it's gold, we get it.

    Carhartt jeans, Toyota Camry's, and Samsung phones all have good build quality. Louis Vuitton, Rolls Royce, and metal skinned phones are almost entirely about fashion. Not the phone's electronics of course, but the metal casing, yes, fashion. You're ignoring the actual technology in favor of focusing, and focusing, and focusing on the minutia of the exquisite metalized skins of these devices.

    Metal may often be studier, but that doesn't devolve everything else to crap. That is often the conclusion to be drawn from your criticism. In point of fact, there are plastics with far better strength to weight ratios than any metal. As a technology person, I really don't care if the case is metal or plastic, so long as it's functional. Your endless rants about the greasy Samsung casings truly baffles me. One wonders if you have some sort of unusual oil factories in the palms of your hands?=.

    Or just maybe, you go through so many phones that are all so similar, the small differences start to become big differences. In that light, I recommend the following XKCD comic strip: http://xkcd.com/915/ - "Connoisseur"
  • Brian Klug - Monday, October 28, 2013 - link

    Yes I do focus on build quality in the review, and the context is still the tradeoff not being worth it in the case of the One max.

    "neglecting the underlying technology"

    What are you even talking about?

    -Brian
  • Dentons - Monday, October 28, 2013 - link

    I'm talking about the fact that you rarely, or barely give any kudos to devices with microSD and user swappable batteries. Those features aren't listed as benefits, they're hardly mentioned at all. Anandtech tests everything else, but I cannot recall the last time Anandtech tested the speed of a microSD port.

    Your recent review of the Note 3 was a case in point. You barely mentioned either of those features. They are real, actual hardware differentiators. For many of us, not only are they important differentiators, the absence of them is a deal breaker.

    A cost conscious consumer can honestly want a device to be future proofed for a few years. We don't get new, free, phones a few times each month. Our batteries wear out. Media sizes are ever increasing. Not all of us want to rely, nor can we rely on the cloud for all our media needs. It is a waste for us to spend an extra $200 for a phone with 64GB when we're far better served with $30 in cheap SD storage. As you point out, we cannot use it for apps, it's for video and music. For those use cases, the highest quality NAND is generally wasted.

    Even though you don't use those features, the best selling smart phone models in the world still have them. You spend orders of magnitude more time discussing the casings, finishes, and lustrousness of phones than either of those. So yes, in this case, you definitely are neglecting the underlying technology in favor of fashion.

    On this topic, in both in your reviews and on the podcast, your attitude is one of "I know what you need better than you know what you need". That's what you're telling us. That you're the expert, and that you know best.

    How would you respond to a reviewer repeatedly telling you that you really didn't need the features you used every single day? That's what you're doing. It's annoying, and insulting.
  • apertotes - Tuesday, October 29, 2013 - link

    Well, if they did not neglect those features they would have to criticize Apple for not providing them, and that is a deadly sin.

    Since Apple is perfection, that is the mirror they use to analyze the rest. Things that do not exist in Apple are worthless by definition.
  • Dentons - Tuesday, October 29, 2013 - link

    You make a relevant point, and allude to another equally important point.

    As you point out, by not giving kudos to phone makers who include microSD and removable batteries, they don't have to list the absence of those features as cons to the Apple and Nexus products the staff here tend to glow over.

    Which leads into another key point. We all know what would happen were Brian's to neglect to mention a key, unique, hardware differentiator in the review of an Apple product. Apple or their marketing agency would contact him. They'd bitch, they'd moan, they'd complain, they may even threaten future review status.

    Many reviewers know not to neglect a focus on Apple's little differentiators, but they have little compunction in reviewing 'lesser' devices with a completely different set of rules.

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