We might get Galaxy wearable devices with solid-state batteries as early as late 2026. | Image by Samsung
Samsung SDI, the branch responsible for the batteries inside your Galaxy phone, announced plans to mass-produce all-solid-state batteries by late 2027. The news broke today in the South Korean national daily newspaper JoongAng Daily.
The target applications for the new so-called "dream" batteries will be EVs, robots, and mobile devices. This means your next Galaxy phone might get days of battery life!
Samsung solid-state batteries are coming next year
Kim Eun-ha, the vice president and head of Samsung SDI’s all-solid-state battery production development group. | Image by Samsung SDI
Samsung has been working on a solid-state battery for almost a decade now. Back in 2017, the company teased a solid-state battery in future Galaxy smartphones two generations ahead. 2019 came and passed, and no "dream battery" Galaxy phone emerged.
Samsung SDI is currently developing the technology, with mass production targeted for the second half of 2027, and we are conducting sample performance evaluations with multiple global customers who have responded positively about [the batteries’] energy density and safety
- Kim Eun-ha, the vice president and head of Samsung SDI’s all-solid-state battery production development group
However, things are starting to look serious now, as apparently Samsung SDI showed the current state of development to potential customers in the EV and robotics sectors, and they were satisfied with the progress and also the targeted mass production date.
Would you pay more for a smartphone with three-four days of battery life?
What is a solid-state battery, and why is it a "dream" battery?
Solid-state batteries have many advantages, but the price isn't one. | Image by PhoneArena
There are many advantages to solid-state batteries, but the most important one is the higher energy density — solid electrolytes allow for the use of lithium metal anodes and thinner designs, packing more energy into smaller, lighter batteries.
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The second huge benefit over traditional lithium-ion batteries is the faster charging — the increased ion conductivity and better thermal management of the solid electrolyte mean they can charge significantly faster, potentially in minutes.
Then there are additional benefits tied to safety — while traditional lithium-ion batteries are quite flammable and release toxic chemicals if punctured, solid-state batteries use stable solid materials, drastically reducing fire and explosion risks.
Samsung is already testing these dream batteries in cars and small electronics
Samsung and BMW partnered to put solid-state batteries in a BMW electric car back in October 2025. | Image by BMW blog
The news of solid-state-powered cars and electronics doesn't come out of the blue. Samsung SDI was the first company to build a dedicated solid-state battery pilot manufacturing line at its research and development center in Suwon, Gyeonggi, in March 2023.
Solid-state battery pouches next to conventional lithium-ion batteries. | Image by BMW blog
When will we get a Galaxy phone with a "dream" battery, and how much will it cost?
The Galaxy Ring 2 will most likely be the first gadget to get a solid-state battery. | Image by PhoneArena
That's a tricky question. We're getting a solid-state battery Galaxy phone, that's for sure, but when and at what cost? Manufacturing these "dream" batteries is expensive, at least in the early stages of mass production.
Solid-state batteries currently run between $400 and $600 per kilowatt-hour, according to SNE Research, while conventional lithium-ion batteries go for around $81 per kilowatt-hour. Even if the mass-produced solid-state batteries are considerably cheaper than this, first gadgets using the tech will most likely be quite expensive.
Because different materials and processes are involved compared to conventional lithium-ion batteries, [solid-state battery] production costs are inevitably high in the early stages
- Kim Eun-ha, the vice president and head of Samsung SDI’s all-solid-state battery production development group
But it all depends on volumes and adoption of the technology. If Samsung SDI plans to mass-produce these batteries next year, then the company believes they will be able to compete in terms of price.
The first Samsung product using solid-state batteries might be small electronics — the Galaxy Watch 10 or the Galaxy Ring 2. Given Samsung launches its flagship phones around late January or early February, the Galaxy S27 series won't get a "dream" solid-state battery.
However, the next generation, the Galaxy S28 series, launching early 2028, might be the first to get days of battery life and charging in a matter of minutes.
I think the news is great and sound this time, and I'm finally excited about the future of battery tech. What about you? Do you believe our smartphones will have days of battery life in a couple of years' time?
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Mariyan, a tech enthusiast with a background in Nuclear Physics and Journalism, brings a unique perspective to PhoneArena. His childhood curiosity for gadgets evolved into a professional passion for technology, leading him to the role of Editor-in-Chief at PCWorld Bulgaria before joining PhoneArena. Mariyan's interests range from mainstream Android and iPhone debates to fringe technologies like graphene batteries and nanotechnology. Off-duty, he enjoys playing his electric guitar, practicing Japanese, and revisiting his love for video games and Haruki Murakami's works.
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