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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  • Ruevenator - Monday, October 28, 2013 - link

    I store a lot of music on my phone. I have 16 GB internal and 64 GB external. Needless to say if I purchased a phone with 80 GB, I'd have to take out a car loan to pay for it. It's stupid to pay for internal OEM storage when you can buy if cheaper. As for "ruining the user's experience with external storage", I believe Apple is just greedy, refusing to give buyers a choice in fear that they might go somewhere else for memory. That is just one of the reasons not to buy an iPhone.
  • ELPCU - Tuesday, October 29, 2013 - link

    Dude, ur argument is SO WRONG. first, slow speed of microSD card does not matter that much, because OS has to be installed on Internal flash. Except OS, there is not much real advantage of using fast speed memory. Why? Note there is thing called RAM, and ur data transfer RAM first, and data will be used after that. Unless bottleneck is happening during tranfer from storage to RAM(which does not happen most case except loading OS and large size app loading), u will not suffer from lack of speed. So what is happening? most of time, you do not benefit from those read/write speed. Oh, also, you know what? Apple's lightning cable is USB 2.0. NOT 3.0. There is huge data tranfer speed cap difference btwn 2.0 and 3.0. 160MB/s is not even useful for data tranfer from PC to iPad, because it will have a bottleneck at 35MB/s(max of USB 2.0)

    And also, most popular microSD card in market today is probably that of Sandisk, and they give 18MB/s for reading, and 12MB/s for writing. which is OK enough.

    BACK TO MAIN ARGUMENT, the advantage of having microSD comes from the fact that phone manufacturer does not give enough storage with REASONABLE PRICE. Most people, who are interested in microSD slot, wants microSD slot because their phone does not have enough storage or manufacturer charge ur money SOO MUCH, and guess what? Apple charge u 100 bucks for every storage upgrade. Because Apple do not have microSD card slot, customers are FORCED to buy those expensive extra storage. It is clear Apple will NEVER add microSD card slot no matter what kind of performance microSD card give. Do you know how much money Apple make out from that?

    There is homepage called iSuppli. Go and look their data. They show u number called Bill of Material(BOM), and BOM difference btwn iphone 5s 16GB->32GB is 9.4 dollars. and 32GB -> 64GB difference is 10.2 dollars(not even close to twice of 9,4 dollar). Although BOM does not include AS cost, marketing cost, cost from transfering, licensing, etc, iSuppli generally call zero margin if BOM is about 66% of market price. In other words, if Apple cost u 15 bucks for increasing each level of storage, they will not lose any money. Considering they have HUGE margin rate, thanks to deceptive number of 2-year contract phone, upgrading phone storage without losing money is NOT a super-generous thing. BUT INSTEAD, they charge u 100 bucks. wow. they are making 85 bucks margin with 15bucks cost if u just see storage. this is TERRIBLY RIDICULUS. If u do not know this BOM number, 100buck looks ridiculus, but if u see BOM number, it looks TERRIBLY RIDICULUS. more than 550% margin rate? wow. With this level of ridiculus price, there is no way reasonable customer even try to UNDERSTAND storage policy of apple.

    u said u can understand apple? I can not understand u dude.
  • TheinsanegamerN - Tuesday, October 29, 2013 - link

    Ok, first of all, it's "you" not "u".
    Second, most of your argument is wrong.
    "Why? Note there is thing called RAM, and ur data transfer RAM first, and data will be used after that. Unless bottleneck is happening during tranfer from storage to RAM(which does not happen most case except loading OS and large size app loading), u will not suffer from lack of speed"
    What do you think the SD card is going to be used for? movies and music eat up more space than most apps, making your point completely rubbish. The whole argument was that cheap SD cards are slow to load data, then you say that it is not a problem, by stating that unless you are loading lots of data, there is not going to be an issue. The whole point is that SD cards are slow.

    Third, the BOM argument makes no sense. If it only costs $15 to go from 16-32 GB, then why do they charge $100 for the upgrade? why not $25 or $30 or something like that? They would still make money. Or are you suggesting that most consumers are too stupid to figure out that apple is ripping them off?

    Fourth, and finally: work on your English. You cannot make a long, legitimate argument if you type the same way that Peggy speaks in those credit card commercials.
  • flyingpants1 - Thursday, October 31, 2013 - link

    Wow, what an asinine comment. What he said is completely accurate. All you could manage was this gem:

    " Third, the BOM argument makes no sense. If it only costs $15 to go from 16-32 GB, then why do they charge $100 for the upgrade? why not $25 or $30 or something like that? They would still make money. Or are you suggesting that most consumers are too stupid to figure out that apple is ripping them off?"

    Seriously.
  • Homeles - Monday, October 28, 2013 - link

    "It will be nice once they go out of business to be able to stop hearing from that tiresome segment of pretend geeks who treat their cellphones like how divas treat their purses - as fashion accessories."

    Textbook "No True Scottsman" fallacy right there.
  • Dentons - Monday, October 28, 2013 - link

    You're absolutely right about Anand and Brian sometimes being "pretend geeks". If you think they're bad in these written reviews, you should listen to them on their podcast, or not.

    In far too many Anandtech podcasts, Brian and Anand banter for ages, (and in dreary detail) about their preferred metal skinned devices.

    They could just as easily be hosting a podcast on the virtues of exquisite jewelery. It's terribly odd for writers who are so well versed in the underlying technology to morph into a fashionistas the moment smart phones are mentioned.

    The shame of it is that Anand and Brian really, REALLY know their technology. Yet for whatever reason, they don't realize their metal skin fetishism is not a priority for most technology centered folks. One suspects that most of the readers on a site like Anandtech are far more interested in the underlying capabilities of a device than the exquisite luster of the diffused, metallic outer casement.

    Diminish the fashion guys, get back to the tech.
  • cbrownx88 - Monday, October 28, 2013 - link

    Can yall get off the fashion rant? Perhaps the metal preference is for a more ridged chassis/device or to achieve a desired weight/feel?

    Personally that's one of the reasons I love Macbooks - I hail from windows camp but after you see a MBP tumble down a flight of concrete stairs and not be absolutely shredded afterwards... you start to desire more designs that share those aluminum/steels/magnesium attributes.
  • superflex - Tuesday, October 29, 2013 - link

    I'll venture a guess you own a plastic phone manufactured by a SK giant?
    Validation is a bitch, especially when your cheap ass phone is the kickball.
    I'll venture another guess when Samsung intros a metal phone, you'll shut the fuck up and quit whining like a bitch.
  • Richard Paguirigan - Monday, October 28, 2013 - link

    Lol,Samsung's flimsy, cheap-looking plastic phones are some of the ugliest phones around, they have that bluish tinted amoled screen and still manage to stutter although they have the latest chips. Their build quality is mediocre and their speakers suck, suck SUCK! I could care less about sd cards or removable batteries which ARE going by way of the dodo. get with the times...
  • cryptech - Tuesday, October 29, 2013 - link

    I spend most of my day in a cli and have 7.8GB available out of 16 on my mobile device. Go ahead and call me a pretend geek but I find it hysterical that just because you carry your video collection around on your phone you think you know a damn thing about the IT industry.

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