Between the two, a hybrid semi-solid-state battery is the safer chemistry, and the reason comes down to fuel. A conventional lithium-ion cell carries roughly 25 to 35 percent flammable liquid electrolyte, and that liquid is what burns when a damaged cell tips into thermal runaway. Mazer’s hybrid semi-solid-state SolidCore cells cut the liquid content to around 10 percent by locking most of the electrolyte into a gel-like matrix. Less liquid means less fuel, more stable cells, and a much smaller chance that a knock, a puncture, or a hot afternoon in your bag ends in smoke.
This guide holds the two chemistries side by side: what each one actually is, how they behave when something goes wrong, what Singapore’s new flight rules mean for both, and which one belongs in your bag. Mazer has been building charging gear from Singapore since 2009, trusted by over 500,000 customers and backed by a 24-month warranty, so battery safety here is not a slogan. It is the spec sheet.
What lithium-ion, solid-state, and semi-solid-state actually mean
Stand in the departure queue at Changi this year and you will hear the new question: how many power banks are you carrying? The rules tightened in April, and the reason is the chemistry inside the casing, not the casing itself. So it helps to know exactly what you are holding.
A lithium-ion battery stores energy by moving lithium ions between two electrodes through a liquid electrolyte. That electrolyte is an organic solvent, and it is flammable. It is also why lithium-ion won the last two decades: the liquid moves ions quickly, cells are cheap to make, and energy density is excellent. Nearly every phone, laptop, and power bank sold today runs on it.
A solid-state battery replaces the liquid electrolyte entirely with a solid material. On paper it is the endgame: nothing liquid to leak or ignite. In practice, full solid-state cells are still largely a lab and electric-vehicle roadmap item, and you cannot walk into a store and buy a solid-state power bank today.
A hybrid semi-solid-state battery sits between the two, and it is the version you can actually own. Most of the liquid electrolyte is replaced or immobilised in a gel-like, semi-solid matrix, keeping the fast ion movement of lithium-ion while stripping out most of the flammable liquid. Mazer’s Semi Solid State Battery Cell (SSBC) technology, the cell platform inside the new SolidCore range, takes exactly this approach.
Semi-solid-state vs lithium-ion: the differences that matter
Four differences decide this comparison, and only one of them is visible on the box.
Fire behaviour and thermal runaway
Thermal runaway is the failure mode behind almost every battery fire: a damaged or short-circuited cell starts generating heat faster than it can shed it, and the reaction feeds itself, as UL Research Institutes explains. In a conventional lithium-ion cell, the liquid electrolyte is the fuel for that fire. A hybrid semi-solid-state cell does not make thermal runaway impossible, but it removes most of the fuel. With liquid content down from 25 to 35 percent to around 10 percent, there is simply less to burn, which is why the chemistry carries a lower risk of fire, swelling, and violent venting.
Swelling, heat, and everyday wear
You have probably seen an old power bank with a bulging shell, the seams pushed apart from the inside. Swelling happens when the electrolyte degrades and produces gas, and liquid electrolyte degrades faster, especially in heat. Singapore is heat. A semi-solid electrolyte is more stable across charge cycles and warm conditions, so the cell is less prone to the slow puff that turns a two-year-old lithium-ion pack into a drawer ornament you are slightly afraid of.
Flight rules from Singapore
The rules treat both chemistries the same, so know them either way. Since 15 April 2026, CAAS limits passengers departing Singapore to two power banks each, and power banks must not be charged on board. Singapore Airlines allows packs up to 100Wh without approval, cabin baggage only, never checked. The maths is friendly: a 10,000mAh pack at the standard 3.7V nominal voltage is about 37Wh, well under the limit whichever chemistry is inside. The difference is what you are carrying past the gate: a cell with less flammable liquid is a calmer travel companion, which is exactly the worry these rules exist to manage.
Price and availability today
Conventional lithium-ion wins on price and choice. The supply chain is twenty years deep, so a capable CCC-certified 10,000mAh pack costs well under a hundred dollars. Hybrid semi-solid-state cells are newer and cost more to make, so expect a modest premium, the price of the extra stability. Full solid-state, the third option people search for, is not a consumer option yet. If a listing claims a pure solid-state power bank at a bargain price, treat it the way you would treat a bargain parachute.
|
What matters |
Conventional lithium-ion |
Hybrid semi-solid-state |
|---|---|---|
|
Flammable liquid electrolyte |
Roughly 25 to 35% of the cell |
Around 10% of the cell, with the rest held in a gel-like matrix |
|
Behaviour under damage |
More liquid fuel available if thermal runaway starts |
Less fuel and more stable cells, so a lower fire and swelling risk |
|
Availability in power banks |
Everywhere, at every price |
New but real; Mazer SolidCore launches this quarter |
|
Cost |
Lower, mature supply chain |
Slightly higher for the newer cell chemistry |
|
Flight rules (from Singapore) |
Cabin bag only, under 100Wh, max two per passenger |
Same rules apply; a 10,000mAh pack is about 37Wh either way |
Semi-solid-state vs lithium-ion at a glance. Flight figures per CAAS and Singapore Airlines rules effective April 2026.
Semi-solid-state vs lithium-ion: which should you choose?
If battery safety is the deciding factor, and for anything that lives in a bag beside your laptop it should be, choose hybrid semi-solid-state. That is the thinking behind the Mazer SolidCore Air 10k, a 10,000mAh power bank built on CCC-certified SSBC cells, launching on whymazer.com this quarter. It brings the roughly 10 percent liquid electrolyte figure out of the lab and into something that fits a jacket pocket.
If you need a power bank this week, a well-built conventional pack is still a sound buy, provided it is certified and protected. Mazer’s current CCC-certified line covers that ground: the MagAir31 Qi2.2 25W magnetic wireless power bank at $79.90 SGD, or the PowerCharge RLink PD45W with a built-in retractable USB-C cable at $99.90 SGD. Certification and protection circuitry matter regardless of chemistry.
Whichever side you land on, check the same five things before you pay:
- Certification: look for CCC or equivalent safety certification printed on the unit, not just the listing.
- Watt-hours: stay at or under 100Wh (roughly 27,000mAh) so the pack clears airline rules without approval.
- Protection systems: over-charge, over-heat, and short-circuit protection should be named in the specs.
- Electrolyte type: a hybrid semi-solid-state cell carries less flammable liquid than a conventional lithium-ion cell.
- Warranty: a brand that offers a 24-month warranty is telling you how long it expects its cells to stay healthy.
The bottom line on battery safety
Semi-solid-state vs lithium-ion is not a close contest on safety. Cutting the flammable liquid in a cell from about a third to about a tenth changes what a worst-case failure looks like, and that is the whole argument. Lithium-ion keeps the edge on price and availability for now, and a certified, protected pack remains a reasonable choice. But the safer chemistry is finally something you can buy rather than read about. The SolidCore range brings hybrid semi-solid-state cells to Mazer’s power bank collection this quarter, and once it lands, the trade-off between safety and convenience mostly stops being a trade-off.
TL;DR
A hybrid semi-solid-state battery is safer than a conventional lithium-ion battery because it cuts flammable liquid electrolyte from roughly 25 to 35 percent of the cell to around 10 percent, leaving far less fuel for fire or swelling. Lithium-ion is still cheaper and easier to find, so buy CCC-certified either way. In the semi-solid-state vs lithium-ion decision, chemistry plus certification beats price alone.
Frequently Asked Questions about semi-solid-state vs lithium-ion batteries
What is a semi-solid-state battery?
A semi-solid-state battery is a lithium battery in which most of the flammable liquid electrolyte is replaced or held in a gel-like semi-solid matrix. It keeps lithium-ion’s fast charging while carrying far less flammable liquid, around 10 percent of the cell in Mazer’s SSBC design.
Are solid-state batteries safer than lithium-ion?
Yes, as a chemistry, solid and semi-solid electrolytes are safer than liquid ones because they carry less flammable material. No battery is risk-free, so certification and protection circuitry still matter alongside the cell type.
What is a solid-state battery?
A solid-state battery replaces the liquid electrolyte of a lithium-ion cell with a fully solid material. Full solid-state cells are still mostly in development for electric vehicles and are not yet sold in consumer power banks.
Do semi-solid-state batteries still use lithium?
Yes. Semi-solid-state and solid-state batteries still move lithium ions to store energy; what changes is the electrolyte those ions travel through, from a flammable liquid to a semi-solid or solid material.
Can I buy a solid-state power bank today?
Not a fully solid-state one. What you can buy is hybrid semi-solid-state, which is the practical middle step. Mazer’s SolidCore range, built on hybrid semi-solid-state SSBC cells, launches on whymazer.com this quarter.
Can I bring a semi-solid-state power bank on a flight from Singapore?
Yes, under the same rules as any power bank: cabin baggage only, up to 100Wh without airline approval, a maximum of two per passenger from Singapore, and no charging on board. A 10,000mAh pack is about 37Wh, comfortably within the limit.
Does a semi-solid-state battery charge more slowly?
No meaningful difference in everyday use. The gel-like electrolyte still moves ions quickly, so a semi-solid-state power bank supports the same USB-C Power Delivery fast charging you would expect from a conventional pack.
When will full solid-state batteries be available?
No firm date exists. Carmakers and cell manufacturers have announced pilot production targets, but fully solid-state cells are not yet in consumer charging products, which is why hybrid semi-solid-state is the current step you can actually buy.
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About Mazer
Founded in 2009, Mazer is a Singapore-based brand trusted by over 500,000 customers, with 1.8M+ units sold, offering high-quality, smarter, and eco-friendly technology designed for everyday life