Reaktr Mag 10K
Qi2 magnetic. Snaps on, tops up, disappears.
- 30W
- 10,000 mAh
- 212 g
$69 Free shipping · 24-month warranty
DetailsUSB-C PD 3.1 · up to 140W
Power that keeps up with your laptop.
Reaktr builds powerbanks that charge a 16-inch laptop at full speed and a phone from empty in twenty minutes — with a display that tells you exactly how much day you have left.
140W out
27,000 mAh
Carry-on safe
- 140W
- Max USB-C output
- 45 min
- 0 to 80% recharge
- 1,000
- Charge cycles rated
The line-up
Four packs. One job each.
No overlapping model numbers, no guessing which one charges a laptop. Pick the size of the day you are having.
Reaktr Slim 10K
65W in something the size of a passport.
- 65W
- 10,000 mAh
- 192 g
$59 Free shipping · 24-month warranty
DetailsReaktr Core 20K
100W, three devices, one pack.
- 100W
- 20,000 mAh
- 396 g
$89 Free shipping · 24-month warranty
DetailsReaktr Max 27K
140W. The one that replaces your laptop charger.
- 140W
- 27,000 mAh
- 498 g
$129 Free shipping · 24-month warranty
DetailsInside the pack
Engineered where it is hard to see.
The parts that decide whether a powerbank is still good in three years are the ones nobody photographs.
GaN-tuned power stage
Gallium nitride switching runs cooler and smaller than silicon, which is how 140W fits in something you can hold in one hand.
A-grade cells, 1,000 cycles
Rated to hold above 80% of original capacity after a thousand full cycles — roughly three years of daily charging.
Thermal headroom
A graphite spreader and an aluminium core pull heat away from the cells so the pack holds peak output instead of throttling in minute four.
12 safety protections
Over-current, over-voltage, short circuit, over-temperature and eight more, checked continuously by the onboard controller.
Real-time display
Watts in, watts out, percentage and the minutes you have left — not a row of four ambiguous dots.
Carry-on by design
Every pack sits under the 100Wh airline limit, with the rating printed on the case so security does not have to guess.
Compare
Find the one that fits your bag.
Every number below is the tested figure, not the theoretical maximum.
| Spec | Reaktr Mag 10K $69 | Reaktr Slim 10K $59 | Reaktr Core 20K $89 | Reaktr Max 27K $129 | Typical 20K pack category average |
|---|---|---|---|---|---|
| Capacity | 10,000 mAh | 10,000 mAh | 20,000 mAh | 27,000 mAh | 20,000 mAh |
| Max output | 30W | 65W | 100W | 140W | 65W |
| Ports | 1× USB-C · Qi2 15W | 1× USB-C · 1× USB-A | 2× USB-C · 1× USB-A | 2× USB-C · 1× USB-A | 1× USB-C · 1× USB-A |
| Weight | 212 g | 192 g | 396 g | 498 g | 440 g |
| Display | Watt + minute readout | Watt + minute readout | Watt + minute readout | Watt + minute readout | 4 LED dots |
| Pass-through charging | No | No | Yes | Yes | Varies |
| Warranty | 24 months | 24 months | 24 months | 24 months | 12–18 months |
-
Reaktr Mag 10K
$69- Capacity
- 10,000 mAh
- Max output
- 30W
- Ports
- 1× USB-C · Qi2 15W
- Weight
- 212 g
- Display
- Watt + minute readout
- Pass-through charging
- No
- Warranty
- 24 months
-
Reaktr Slim 10K
$59- Capacity
- 10,000 mAh
- Max output
- 65W
- Ports
- 1× USB-C · 1× USB-A
- Weight
- 192 g
- Display
- Watt + minute readout
- Pass-through charging
- No
- Warranty
- 24 months
-
Reaktr Core 20K
$89- Capacity
- 20,000 mAh
- Max output
- 100W
- Ports
- 2× USB-C · 1× USB-A
- Weight
- 396 g
- Display
- Watt + minute readout
- Pass-through charging
- Yes
- Warranty
- 24 months
-
Reaktr Max 27K
$129- Capacity
- 27,000 mAh
- Max output
- 140W
- Ports
- 2× USB-C · 1× USB-A
- Weight
- 498 g
- Display
- Watt + minute readout
- Pass-through charging
- Yes
- Warranty
- 24 months
-
Typical 20K pack
category average- Capacity
- 20,000 mAh
- Max output
- 65W
- Ports
- 1× USB-C · 1× USB-A
- Weight
- 440 g
- Display
- 4 LED dots
- Pass-through charging
- Varies
- Warranty
- 12–18 months
The right-hand column is an average of widely sold 20,000 mAh packs, not a specific competitor product. Figures for Reaktr models are measured at 25°C with a 100W source.
Owners
Judged on the fourth day of a trip.
I left the laptop charger at home for a four-day trip and never once looked for an outlet. The display is the part I did not know I needed — knowing there are 40 minutes of laptop left changes how you plan a day.
Charges my 16-inch at full speed, which no other pack in my drawer manages. It is heavier than a phone battery, obviously, and that is the trade I wanted.
Two phones, a drone controller and a pair of buds off one pack on a shoot day. It stayed cool the whole time, which is more than I can say for the one it replaced.
Questions
The things people ask before buying.
Still deciding? Support answers in one working day.
Can I take a Reaktr powerbank on a plane?
Yes — every pack in the line-up is rated under the 100Wh limit that airlines allow in carry-on baggage. The Max 27K sits at 99.9Wh, right at the ceiling. Batteries always travel in your cabin bag, never checked luggage.
Will it charge my laptop at full speed?
The Max 27K delivers 140W over USB-C PD 3.1, which is the same profile a 16-inch laptop charger uses. The Core 20K delivers 100W, enough for 14-inch machines at full speed. The wattage is printed on every product page so you can match it to your own charger.
How long does the powerbank itself take to recharge?
With a 100W or higher USB-C charger, the Max 27K reaches 80% in about 45 minutes and full in roughly 95. The Slim 10K is full in 78 minutes. Recharging from a laptop port will be considerably slower.
Can I charge the pack and my devices at the same time?
Yes. Pass-through charging is supported on the Core 20K and Max 27K, so a single wall outlet keeps the pack and everything plugged into it topped up overnight.
What does the warranty cover?
24 months against manufacturing defects and capacity loss beyond normal wear, plus a 30-day return window if the pack is not right for you. Register the serial number to extend cover to 30 months.
What is in the box?
The powerbank, a 100W-rated braided USB-C to USB-C cable, a travel pouch on the Max 27K, and a quick-start card. No wall charger — most people already own one, and leaving it out keeps the price and the waste down.
Stop planning your day around outlets.
Free 2-day shipping, 30-day returns, 24-month warranty on every pack.
- Free 2-day shipping
- 30-day returns
- 24-month warranty