Customer reviews from Twelve South
Twelve South - PowerCapsule (Slate) 10,000mAh
Average customer rating
4.2
(6 Reviews)
Rating breakdown 6 reviews
5 Stars
4
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
1
83%of customers recommend this product.
(
5 out of
6)
Customer Reviews for Twelve South - PowerCapsule (Slate) 10,000mAh
Customer Rating
1
Overheating
on September 22, 2026
Posted by: Charlotte H.
from US
I just purchased a power Capsule 10 and it overheats very quickly, so much that it’s not comfortable holding my cell phone while the battery is on it.
No, I would not recommend this to a friend.
Written by a customer while visiting Twelve South
Customer Rating
5
A little help from my 10K mah friend
on August 26, 2026
Posted by: John G.
from US, United States
On travel days, the airline app running in the background drained my battery. I land in a city I haven’t been before and my phone is near death. This is a quick solution.
I would recommend this to a friend!
Written by a customer while visiting Twelve South
Customer Rating
5
Great - Just get it!
on June 16, 2026
Posted by: Barry G.
from US, United States
The charging is super fast. Fit is good, weight is good, great addition. Can’t go wrong.
I would recommend this to a friend!
Written by a customer while visiting Twelve South
Customer Rating
4
Fabulous but could be problematic with USA TSA inspection
on March 26, 2026
Posted by: T M.
from US
I love mine (5 stars), but recent changes in TSA screening requirements can confiscate this power pack at the airport because the lettering on the Dune one is so small and light grey that you cannot read what the power rating is. It doesn't matter that it is less than 100 W-hours - if the TSA can't read that without taking a picture and zooming in (which I have to do), then it could be confiscated. Now I'm not able to travel on a plane with it. Otherwise, it is perfect. Fix the labeling, please!
I would recommend this to a friend!
Written by a customer while visiting Twelve South
Customer Rating
5
Powerful and cool running
on March 20, 2026
Posted by: Mark H.
from US, United States
So far, this MagSafe battery is the best I’ve owned. It easily keeps my phone charged for long trips, helps avoid any need to plugin to public usb outlets, and never gets overheated during use.
I would recommend this to a friend!
Written by a customer while visiting Twelve South
Customer Rating
5
Excellent travel device
on February 20, 2026
Posted by: Jan G.
from US, United States
This product is a wonderful addition to those of us who are using our phone while traveling. You don’t need to stop and charge the phone with either plugs in or a battery that requires cords. My friend and I both utilized it on one charge to take phones from 15% to fully charged and it does not take long, nor does it heat up. Highly recommended.
I would recommend this to a friend!
Written by a customer while visiting Twelve South