The SolidSafe 10K is a 10,000mAh power bank engineered to reduce fire risk. Semi-solid-state battery cells contain a fraction of the flammable liquid found in conventional lithium-ion, designed to resist the thermal failures that cause batteries to ignite. That's why power banks get recalled. That's why airlines restrict them. This solves it. Qi2 magnetic wireless charging, dual USB-C ports with 30W total output, full-color LCD display, built-in cable. Up to two full phone charges in a form factor slim enough to forget it's there.
Solid-State Cell Design Semi-solid-state chemistry cuts flammable liquid to a fraction of conventional lithium-ion, resulting in more stable charging and lower fire risk.
Tested for Safety In internal testing, SolidSafe cells have been drilled, cut, and punctured while fully charged - with no fire or thermal runaway. Traditional lithium-ion ignites instantly in the same tests.
Qi2 Certified 15W Magnetic Charging Locks onto Qi2 and MagSafe-compatible phones with a perfect magnetic snap. Delivers up to 15W fast wireless charging for iPhone 12-17 series, Pixel 10 series, and select Android devices.
Dual USB-C Fast Charging (30W Total) Two USB-C ports deliver up to 30W combined output. Charge your phone and tablet simultaneously, or power two devices at once with USB-C Power Delivery.
Full-Color LCD Display A bright, easy-to-read screen shows real-time battery percentage and charging wattage - so you always know how fast it's charging and how much power is left.
Built-In Lanyard Cable The integrated USB-C cable doubles as a carry strap. Plug in for faster, more efficient charging than wireless, or use it to recharge the power bank itself.
Charge Three Devices at Once Power your phone, tablet, and earbuds simultaneously using dual USB-C and Qi2 wireless together.
Pass-Through Charging Charge your phone while recharging the power bank at the same time through USB-C Power Delivery. Stay powered without waiting.
Airplane Mode A dedicated travel-ready state that places the battery in controlled mode for safer flights and storage.
TSA Ready Under 100Wh -- within FAA carry-on rules.
2-Year Warranty Built to last. Covered if it doesn't.
heybmx.com ships to the United States and Canada only.
SolidSafe 10K
Built safer. Built smarter.
Semi-solid-state cells, a live LCD readout, Qi2 wireless, and a built-in USB-C cable in one 10K power bank.
USB-C Lanyard
Built-in cable.
No extra cord.
Full-color LCD
See every charge.
Battery percent. Live watts.
Qi2 Wireless
Snaps on.
Magnetic charging.
Semi-solid-state
Safer battery cells.
Reduced liquid electrolyte.
Four finishes
Pick your finish.
Black. Blue. Orange. Silver.
Simultaneous
Charge 3
Cable. Port. Wireless.
Wired output
30W USB-C
Fast wired output.
All-day power
10,000 mAh
All-day backup power.
Aluminum body
Dissipates heat.
Clean, durable enclosure.
Travel
Carry-on friendly.
Under 100Wh.
In the press
Built different. Reviewed that way.
"It could be a game changer for smartphones."
"Really delivers on what it promises."
"A well-built, intelligently designed charging solution."
"BMX is doing something that no other major player in the mobile space is currently doing."
Semi-solid-state
Built different from the inside.
<p>SolidSafe uses semi-solid-state cells with significantly less liquid electrolyte than conventional lithium-ion. Less liquid means less fuel for the failures behind battery fires.</p>
Full-color LCD
See what is left.
<p>The LCD shows battery percentage and live charging wattage, so you know when to top up and how fast each device is charging.</p>
Qi2 magnetic
Snaps on. Charges Fast.
<p>Qi2 gives you 15W magnetic wireless charging when you do not want to plug in. The alignment is automatic, so the phone lands where it should.</p>
Built-in USB-C
Cable, Always With You.
<p>The USB-C lanyard stays with the bank for faster wired charging or refilling the pack. No separate cable hunt.</p>
CNC aluminum
Aluminum that helps with heat.
<p>The CNC aluminum body feels solid in hand and helps spread heat during charging. It is a cleaner build than the plastic shells common in this tier.</p>
9TO5MAC TEST
Put through the kind of test most power banks avoid.
9to5Mac put SolidSafe through a hands-on abuse test and showed the pack continuing to charge afterward. No mystery quote needed, just the proof on video.
Details
Product details, in plain English.
The quick receipt: more capacity than 5K, two USB-C ports, Qi2 magnetic wireless, LCD readout, built-in cable, and semi-solid-state cells.
Semi-solid-state cellsSignificantly less liquid electrolyte than conventional lithium-ion, which helps reduce fire risk.
10,000mAh / 38.5WhAbout two phone charges for long days, travel, and heavier use.
Dual USB-C + Qi2Charge a phone, earbuds, and another small device at the same time.
30W USB-C outputUse wired power when speed matters. Refill the bank at up to 27W.
Full-color LCDSee battery percentage and live charging wattage instead of guessing.
Built-in lanyard cableThe USB-C strap stays with the bank for wired charging or recharging the pack.
Specs
Product specifications
The researcher track. Exact capacity, output, size, weight, ports, and what comes in the box.
Capacity
10,000mAh / 38.5Wh
Under the 100Wh carry-on battery limit.
Wireless
Qi2 magnetic wireless charging, up to 15W
USB-C output
Dual USB-C, 30W total Power Delivery
USB-C input
27W max input
Devices
3 at once: two USB-C devices plus Qi2 wireless
Display
Full-color LCD with battery percentage and charging wattage
Size
102.7 x 72.7 x 18.9 mm
Weight
230.5 g
In the box
SolidSafe 10K power bank and 60W USB-C cable
Warranty
2-year limited warranty
Quick answers
Questions, answered quickly.
The practical stuff: capacity, flying, device fit, safety, charging speed, and what is included.
The practical answers, shown step by step.
Is 10,000mAh enough for a full day?
Yes. SolidSafe 10K is the higher-capacity SolidSafe for heavy phone days, travel, or sharing power. Expect up to about two full phone charges depending on your device and use.
Can I fly with SolidSafe 10K?
Yes. SolidSafe 10K is 38.5Wh, below the 100Wh carry-on battery limit. Carry power banks in your carry-on, not checked luggage, and always follow your airline rules.
Why does the 10K model show 5,000mAh in the fine print?
SolidSafe 10K uses two 5,000mAh battery cells. Regulations require the capacity of each individual cell to appear on the compliance label, which is why 5,000mAh appears in the fine print. Combined, these two cells provide the full 10,000mAh capacity of SolidSafe 10K.
How is it different from SolidSafe 5K?
It doubles the capacity, adds a second USB-C port, increases total USB-C output to 30W, and can charge three devices at once. It is bigger, but built for longer days.
What does semi-solid-state mean here?
SolidSafe cells use significantly less liquid electrolyte than conventional lithium-ion. That helps reduce fire risk, and internal puncture testing showed no fire or thermal runaway.
What devices can it charge?
It charges MagSafe and Qi2-compatible phones wirelessly, plus USB-C phones, earbuds, small tablets, cameras, and other small USB-C devices. Wireless reaches up to 15W where supported, and USB-C output reaches 30W total.
Can it charge a laptop?
It is phone-first. The 30W USB-C output can help some low-power USB-C devices in a pinch, but laptop-first charging calls for a higher-output laptop power bank.
How fast does it recharge?
USB-C input reaches up to 27W. With a 20W or higher USB-C PD wall charger, it can reach about 80% in roughly one hour.
What comes in the box?
SolidSafe 10K and a 60W USB-C cable.
Customer Reviews
Overall rating: 4.1 / 5 from 71 reviews.
¡Simplemente excelente! Amo este producto. El acople magnético es súper firme y sumamente práctico para el uso diario. Los 10,000 mAh de capacidad son más que suficientes para mantener mi teléfono cargado todo el día sin interrupciones. El diseño es compacto y de primera calidad. ¡Totalmente recomendado, le doy 5 estrellas!
This is not Red, and why does it burn me when I wireless charge? Phone goes into thermal protection. Do you have empirical 3rd party lab audited data to back your claims
I purchased this unit via Kickstarter campaign. After charging the unit the display goes wonky. They agreed to replace it but I haven't heard anything in over two weeks. Please help.
Store owner replied:
Sorry this has dragged on. Please email support@heybmx.com with your order number and the name or email used for the replacement request so we can look it up and get you an update.
I got three 10k solid state batteries to use in my coat and to use for work when I’m running low. These get used every day and work perfectly. 100% best buy I’ve had for battery packs.
Very impressed with this power bank! I could tell this was solid right from the packaging. The power bank itself is super high quality. I love that it matches my phone and I don’t need to take my phone case off for the magnet to work. The lanyard doubling as a usb-c came in super clutch. Love the LED indicator, very clean. Very surprised at how fast it charges! Im used to wireless charging taking a long time but this is just as fast as the wall charger. Definitely recommend!
Great power bank overall. I do wish the battery status would appear more quickly after pressing the button to wake the display, but it's not unbearable by any means. This only typically applies when I've had the power bank tucked away for a while and I want to periodically confirm the current state of charge.
Ordered a couple of these batteries and multi charger because I was pleased with the first one I got. They claim it would arrive by UPS ground within 3-5 business days. It took them a full week to issue the shipping label. UPS claims batteries haven't shipped yet. Unacceptable in this day and age.
Store owner replied:
Hi Tomoharu,
Thanks for sharing your feedback. I will send you a message from our support channel to see if we can get this sorted for you as there was a mishap on getting labels generated for a few orders and we caught it a couple days late. That's our bad. I will send you a message shortly.
Thanks,
BMX Customer Care
At first I thought it was very good, but after 3 months or so, I find the charge in the unit falls to zero after approximately 24-30 hours so I have to leave the charge cable connected continuously.
This makes it a stationary charging pad, and means I can't take it with me for on the go usage.
Gary
The battery power packs are nice, but they take a long time to recharge from about 30 - 40%. Recharging your phone takes a while, and with a Pixel 10 Pro XL, you can only get 1 full phone charge if your phone is down to 30% or less. You'll not be able to fully charge your phone a second time.
I went through a bunch of cases to make my s25 ultra work with this battery I use the air 5K ones a lot and there's no problem with charging or connectivity. But for some reason the 10k ones have given me an issue on my s25 ultra although they work perfectly with my S 23 ultra. I do use them with the attached ultrafast charge cord and it really does charge up my phone fast I like his power Banks I have five of them
Store owner replied:
Thanks for flagging this. A 10K pack should deliver more usable charge than what you are describing, even with normal efficiency loss from wireless charging and heat. Please email support@heybmx.com with your order number, phone model, cable or wireless setup used, and a photo of the serial or batch number on the side so we can help check the unit.
Battery drains way too fast 30 seconds after charging starts it’s already down to 90%. That’s not how it supposed to work. This is the second battery sent to me the first one stopped working the first time I used it. So far I am unimpressed. Bought it through kickstarter
Store owner replied:
Sorry about that. A replacement unit should not drain that quickly either. Please email support@heybmx.com with your order number, the phone or device you are charging, and a photo of the serial or batch number on the side so we can check the unit and help with the right next step.
Unit is awesome and works without issues. I take it with me everywhere.
Store owner replied:
Sorry about that. One unit failing to charge is not expected. Please email support@heybmx.com with your order number, a photo or short video of the failed unit, and a photo of the serial or batch number on the side so we can help with a replacement, return, or the right next step.
Use for Galaxy Z Fold 6 smartphone and your power bank drains too quickly
Store owner replied:
Thanks for the feedback. Larger phones like the Z Fold line can draw more power, and the listed power-bank capacity is not the same as the exact percentage your phone receives. Some energy is lost during voltage conversion, and wireless charging loses more through heat and alignment than USB-C. For the most efficient charge, use the included USB-C cable. If the unit is draining unusually fast, email support@heybmx.com and we will help check it.
This product was great. The only negative is being harassed repeatedly to write a review. I hope this suffices.
It is ok/good. The pic on the website is misleading. It does not magnetically attach to my Pixel 9 XL Pro. Other reviews indicated similar issue. I like the semi-solid state aspect of it. Much smaller and lighter than my previous litium-ion power bank by a leading competitor. The cable loop cord is clever and helpful since I must rely on the cable connection to top-off my Pixel and other devices (headphones). Traveling soon so hopefully it will perform well.
Great product. Took me a few min to figure out that the handle was also the charging cable, but after that was easy to charge the unit and recharge my devices.
Just received the replacement for the original which became inoperable after the first use. I haven’t used the replacement that I’ll be. It doesn’t become inoperable after its first use again. I was treated well with by the Customer Service who quickly sent me a replacement unit.
Store owner replied:
Thanks for giving us the chance to make it right. Sorry the original unit had an issue, but we are glad support was able to get the replacement handled quickly.
Works well, nicely designed. Shipping took forever though.