If something is wrong, it speaks up
Snap it on and it charges. A real top-up in 10 minutes
Dropped, hammered, run over by a car. No thermal runaway
Charge, temperature and power at a glance
Snaps into place. Watch hands-free
One chip watching the whole time
Semi-solid-state cell
The same steel nail, two very different cells. Keep scrolling to see what happens.
The nail goes in and nothing happens. That is the best possible reaction. Liquid electrolyte held below 5%, structure intact. In the one-hour nail test at CHEMITOX Japan: no fire, no smoke, no rupture.
Extreme testing
Third-party testing
Cell safety tests run by CHEMITOX Japan and SGS Taiwan: push the battery to its limit and see what happens. Every figure below is taken straight from the reports.
CHEMITOX Japan: a 3 mm steel nail is driven through the cell and left in place for 60 minutes, with current and voltage measured throughout.
0fires, smoke or ruptures
Completed on both 10,000 and 5,000 mAh cells
A 32-degree conical steel pin, 4.0 mm across, driven all the way through the cell at 40 mm per second.
44.0°C
No fire, no explosion
Fully charged, then heated in a chamber at 5°C per minute up to 130°C and held there for 60 minutes.
130°C for 60 min
No fire, no explosion
Charged continuously at 5 A all the way to 4.7 V, for more than an hour without stopping.
32.0°C
No fire, no explosion
Discharged continuously at 5 A for 1.5 hours, until the cell is completely drained.
58.4°C
No fire, no explosion
The terminals are shorted directly through a 15.14 mOhm external resistance. The cell tab fuses itself and opens the circuit.
23.4°C
No fire, no explosion
The nail penetration test was performed by CHEMITOX Japan. The remaining tests were performed by the SGS Taiwan reliability laboratory, report numbers HE40037/2026 (overcharge, over-discharge, external short circuit, thermal abuse) and HE50024/2026 (puncture), on the semi-solid-state cell used in this product (model 486578). Each figure is the highest surface temperature recorded in the report and represents the tested samples only.
World-first safety alarm
When a power bank goes wrong, most people are the last to know. TITANSHIELD Pro has a built-in alarm: it sounds the moment it detects a fault, so you can move away right away. You can also set the alarm off yourself, to learn what it sounds like.
If your phone is on silent, switch the ringer back on to hear it
Smart protection chip
Every second of charging and discharging, the protection chip watches voltage, current and temperature, and acts the moment something goes wrong, before you notice.
Cross the line and output cuts out at once.
It monitors temperature, current and voltage in real time and adjusts power on the fly. Instead of cutting charging off when it warms up, it lowers the power and keeps going, so it stays cool to the touch and charging never stalls.
Cooling
A unibody aluminum shell with a phone-grade graphene heat-spreading layer inside. It spreads the heat out first, then carries it away across the whole metal body.
Thermal comparison
Under the same 25W fast-charge conditions, a plastic shell forms a concentrated hot spot. The aluminum body and graphene layer spread the heat outward far more evenly.
Material comparison
Graphene flattens the hot spot, then the aluminum body carries it away.
By thermal conductivity, that is more than 6,000 times a plastic shell.
Thermal conductivity figures are typical values for each material (graphene heat spreader / aluminum alloy / ABS and PC plastics). The graphene figure is for the in-plane direction. On Pro, the graphene spreader flattens the hot spot and the aluminum body then carries the heat outward.
Dynamic power controlIt monitors temperature, current and voltage in real time, staying right on the line between as fast as possible and too hot.
More accurate alignmentWhen the coils line up, energy does not turn into heat. Less is lost to off-center charging.
More sensitive FODPut a key or a coin on it and output drops or stops immediately.
It keeps chargingWhen it gets hot it lowers power and carries on, instead of the stop-start behavior of older wireless chargers.
Charging performance
Watts alone are not enough; the cooling has to keep up. A 25W charger that cannot shed heat throttles down and ends up slower than 15W.
The 30-minute, 50% figure comes from wireless charging tests. The curves are illustrative; actual results vary with phone model and environment. "25W without enough cooling" illustrates the principle: once heat triggers throttling, real power falls below the rated wattage.
Charge counts are estimated from 37 Wh of rated energy and a typical conversion efficiency of about 60%; actual results vary with environment and use. Phone battery capacities are from public sources.
One pack, many devices
Snap it on and charging starts. From the phone you use all day to a wireless charging AirPods case, one pack keeps your everyday devices going.
TFT smart display
Battery health, operating temperature, remaining capacity, wireless power, input and output, and safety alerts, all shown live.
CNC-machined from a single block of aluminum, with corners rounded to match. Stack it on a MacBook and it reads like a first-party accessory. Apple people will get it.
Global reach
Total raised across three crowdfunding campaignsAbout $413,000
The first TITANSHIELD raised more than $320,000 on Taiwan's zeczec platform. Pro hit its goal in both Taiwan and Japan. Safety translates.
How do you pick a power bank? All three use semi-solid-state cells and pass the same safety tests. Air is the thinnest, TITANSHIELD is the everyday balance, Pro is the flagship. Pick the one you want.
Ultra-thin
So thin you forget it is in your pocket.
69
Everyday balance
Five-in-one charging. One device instead of a desk full of cables.
From 69
Flagship performance
Twice the capacity, and it warns you before trouble starts.
99
| AirUltra-thin | TITANSHIELDEveryday balance | ProFlagship performance | |
|---|---|---|---|
| Battery capacity | 5,000 mAh | 5,000 / 10,000 mAh | 10,000 mAh |
| Wireless output | 15W | 15W | 25W (Qi2.2) |
| Wired output | 18W | 20W | 30W |
| Thickness | 6 mm | 11 / 19 mm | 13 mm |
| Weight | 113 g | 155 / 255 g | 214 g |
| Cell | Semi-solid-state Li-ion | Semi-solid-state Li-ion | Semi-solid-state Li-ion |
| Battery display | — | — | TFT smart display |
| Folding stand | — | — | Hidden stand |
| Safety alarm | — | — | ✓ |
| Apple Watch charging | — | ✓ | — |
| AirPods charging | ✓ | ✓ | ✓ |
| Thermal protection | NTC sensing and throttling | NTC sensing and throttling | NTC sensing and throttling |
| Suggested price | 69 | From 69 | 99 |
The standard model comes in 5,000 and 10,000 mAh; both are listed, separated by a slash.
Design Editions
The same solid-state cell, in mirror and design finishes. Pick the one that suits you.
$99
Graphite Black
Reviews
Every purchase includes a one-year warranty. Register the product on our website and we extend it by another year, for 1+1 years in total. The warranty covers defects or damage under normal use, and excludes consumables and damage caused by external force.
Yes, in your carry-on. 10,000 mAh works out to about 37 Wh of rated energy, well under the 100 Wh civil aviation limit. Note that power banks must always be carried on board and never placed in checked baggage.
Any phone that supports Qi or Qi2 wireless charging can charge on it. If your phone has no magnets, add a magnetic ring adapter, or charge over a Type-C cable at up to 30W.
Move the power bank somewhere ventilated and away from anything flammable, then email us at support@grantclassic.com. You can also set the alarm off yourself at any time, so you know what it sounds like.
Pro is the flagship: it adds the safety alarm, the TFT smart display and the hidden stand, and takes wireless fast charging from 15W up to Qi2 25W, with 30W over cable. See the comparison table above for the full details.
It charges them. Any Android phone with Qi wireless charging starts charging when you set it down. On models without magnets, a magnetic ring sticker lets it snap into place the way MagSafe does.
Yes. While it is charging over Type-C, it can charge your phone wirelessly at the same time. Plug it in before bed and both are full in the morning.
The alarm triggers only when it detects a fault, so normal everyday use will not set it off. You can also test the alarm yourself, without an app, to get familiar with the sound and the volume.
After buying, complete the member warranty registration on our website to add another year on top of the 1-year manufacturer warranty.
Every order comes with a 30-day return window from delivery. If there is any problem with the product, you can request a return within those 7 days. The return window is not a trial period: returned items must be in new condition with complete packaging. See the returns policy on our website for details.
Power bank safety, how to choose one, and solid-state technology, written up from our own testing.
Can a power bank explode? Solid-state puncture testing and PSE certification explained
Are solid-state power banks really safer than liquid ones? Using CHEMITOX Japan puncture test reports and PSE certification data to break down the five main battery safety tests.
Read the article ›
2026 solid-state power bank picks: certified models compared, with a buying checklist
Choose on the documents, not the ads: TITANSHIELD 5,000 / 10,000 / Pro compared, the five SGS safety tests, and how to verify a certification yourself.
Read the article ›
Is a swollen power bank still safe to use? Causes and the right way to handle it
Can you keep charging a power bank whose shell has swollen? The answer is no, stop using it. The common causes of swelling, the warning signs, and safe handling steps.
Read the article ›
How to read power bank certifications: capacity is not the point, safety marks are
How to read BSMI inspection marks, capacity labels and cell chemistry, so you stop comparing mAh alone.
Read the article ›
What is thermal runaway? The battery safety facts you should know
From cell structure to the common causes and how to lower the risk, so you can pick a power bank you feel better about.
Read the article ›
What to do about a power bank recall: self-checks and replacement advice
Three steps to check for swelling, heat and unusual battery drain, plus how solid-state cells lower the risk at the source.
Read the article ›
Whatever needs looking after, it looks after. grantclassic comes out of California, with a team across Taiwan and the US. From product idea and development through quality control and manufacturing, every product is built to hold up to daily use.
