LAS VEGAS -- Amid all the advances in smartphones, battery technology
has lagged painfully behind -- leaving users scrambling for AC outlets
in awkward places like hotel lobbies, airport lounges and even public
restrooms. But device makers, chip suppliers and third-party innovators
hope to soon bridge the gap between the battery life consumers want and
what devices can currently provide.
“I think there’s a real latent need out there for some innovation in
battery. As consumers desire it more and more, that’s an opportunity
somebody’s going to have to figure out,” said Michelle Leyden-Li,
Qualcomm’s senior director of marketing.
Researchers are zeroing in on three main aspects of smartphone
battery technology: increasing power capacity, optimizing hardware and
software, and faster charging. Different areas of the mobile industry
have different ideas on which aspects deserve the most focus, but all
agree that the goal is to give consumers more juice over longer periods.
Bigger Batteries
Mobile batteries are getting bigger. Two years ago, capacity on many
high-end smartphones was about 2500mAh (milliampere hour – a measure of
the energy charge a battery can hold). The Samsung Galaxy S4, which
launched in 2013, has a 2,600mAh battery. Now, some smartphones are
approaching or exceeding 4,000mAh capacity. China’s Lenovo announced its
P90 smartphone, which features a 4,000mAh battery, at the 2015 International CES here Monday.
Lenovo said extending capacity without compromising smartphone design
is its biggest focus at the moment. “Trends are definitely moving
toward the bigger battery. Companies -- including us -- are finding ways
to fit a bigger battery into a slimmer profile,” said Craig Bond,
Lenovo’s head of worldwide product communications.
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Lenovo P90
Fionna Agomuoh/IB Times
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Lenovo has already experimented with batteries and design on its
Yoga brand of tablets.
The tablets feature a cylindrical battery at the base, which affords
higher capacity without compromising overall thickness. It also doubles
as a built-in stand for the Yoga tablets. Of course, tablets
traditionally have larger batteries than smartphones, so capacity is
only one part of the story.
Quick Charging
In 2014, some manufacturers implemented quick-charge features on
their smartphones. Motorola, a subsidiary of Lenovo, launched its Nexus 6
smartphone with its branded Turbo charge feature, which can add up to
six hours to a low battery in 15 minutes. Motorola’s Droid Turbo
(featuring a 3,900mAh battery) can add up to eight hours of charge in 15
minutes. Lenovo’s P90 smartphone also has a quick-charge feature, which
provides a 50 percent increase in charge in 30 minutes.
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Motorola Droid Turbo
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Quick charging is designed to work only if a battery is low. A
special adapter detects a low battery and sends an influx of power to
restore the juice. “It’s kind of like a hose. I have a close to empty
bucket and I can let the floodgates open. It’s like a dam; I can let the
floodgates open and that’s OK,” said Ken Fong, a Motorola rep. “If your
bucket is already 80 percent full, in order to not damage anything we
have to trickle it down. That’s the whole concept.”
Quick charge begins at the core of a smartphone, in its processor,
and that’s where companies like Qualcomm come in. Qualcomm supplies its
Snapdragon chips
to most Android phonemakers. Quick charge comes standard on many
Snapdragon chips; however, it is up to manufacturers to enable it.
Flash Charging
Israeli startup StoreDot
knows there's a huge gap between consumer demand for battery power and
what batteries can actually provide, and has found a unique way around
the problem. Its flash system can take a smartphone battery from empty
to full in one to two minutes.
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StoreDot system charging a Samsung Galaxy S5 handset.
Fionna Agomuoh/IB Times
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At a CES demo, StoreDot charged a Samsung Galaxy S5 outfitted with
its after-market system from 8 percent to 100 percent in about two
minutes. “With a flash battery, it depletes, but it immediately refills,
so it’s like you have an endless battery,” said Doron Mysersdorf,
StoreDot CEO. “I think a few years from now, everybody and everything
charges fast.”
StoreDot’s system consists of a special battery and charger. The
battery, developed by StoreDot, is attached to the back of a smartphone.
The device is then inserted into its docking station to charge. A prior
version could charge a smartphone in just 30 seconds, but the design
proved too bulky. Still, StoreDot is convinced that consumers will favor
faster charging over a slim design and says manufacturers have the
freedom to redesign its battery case. StoreDot is in talks with major
smartphone manufacturers to bring its technology to market by 2017.
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StoreDot back cover superimposed on Samsung Galaxy S5 handsets.
Fionna Agomuoh/IB Times
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The Software Side
Each new generation of smartphone includes some sort of battery
optimization software to conserve power. Google implemented its Project
Volta on its latest Android 5.0 Lollipop. Motorola smartphones such as
the Droid Turbo and Moto X include software-based optimization features
such as Active Display.
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Active Display
for messages allows uses to drag the messages icon to open a message
without turning on the entire screen, thus saving battery power.
Fionna Agomuoh/IB Times
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With Active Display, a user can long-press a powered-down screen to
access basic information like the time without turning on the entire
display, which saves battery life. “From the battery optimization
aspect, you want to make everything work more efficiently on a device,”
Fong said.
What’s Next?
Optimization can only go so far as smartphones get used for an
increasing array of tasks, from showing movies to controlling in-home
appliances. “There’s a race for applications to use more from the
battery,” said Simon Litsyn, StoreDot CTO. In the short term, most
manufacturers will rely on increasing battery capacity to give consumers
more juice while they await more innovative solutions.
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