Boostcase Bloc Power Bank for Apple Watch Review - MacRumors
Skip to Content

Boostcase Review: Bloc Power Bank for Apple Watch Has Unique Built-In Battery, but Isn't Portable Enough

by

Just months after the Apple Watch was released, there are dozens if not hundreds of different stand options available on the market. The Bloc Power Bank from Boostcase stands out due to its unique long, flat shape and the fact that it has a built-in battery pack that can charge the Apple Watch while on the go.

Made from solid aluminum, the Bloc Power Bank comes in Silver, Space Gray, Gold, Rose Gold, Wood, and Stainless Steel, to match all of the different Apple Watch options that are available. I went hands-on with the silver aluminum model to see how it measures up to other available stands on the market and whether the built-in battery is a useful function.

blocdesign

Design and Setup

As with all Apple Watch stands, the Bloc is designed to work with the charging cable that ships with the Apple Watch, and thus it does not include a built-in charging cable. Size wise, the Bloc is just under 10 inches long, just over half an inch thick, and two inches wide. It weighs 408 grams, or 0.90 pounds with both the battery pack attached and the Apple Watch charger in place.

blociphonesizecomparison
If you're thinking that sounds both unwieldy and heavy, that's a correct assumption. At 10 inches long and nearly a pound in weight, the Bloc isn't exactly what I'd call portable, because it's not going to fit comfortably in a backpack or a purse. Since it's flat and rectangular, the Bloc can only be used with open-loop bands like the Sport Band, the Modern Buckle, and the Classic Buckle.

blocwithapplewatch
It's not going to be suitable for the closed-loop bands like the Milanese Loop, the Leather Loop, or the Link Bracelet because the Apple Watch needs to be able to lay flat on the surface to charge. It's well-made and sturdy, and the charger is slightly raised to prevent the Apple Watch from coming into contact with the aluminum. Because it lays flat, the Bloc is not going to support iOS 9's upcoming Nightstand Mode, a major negative if you plan to use the Apple Watch as a nighttime clock.

blocwithapplewatchcharger
At this point, I've tested several Apple Watch stands and I can say without a doubt that the Bloc was the most difficult and frustrating to assemble. The Apple Watch charger is placed in a little rubber cap and fitted into a slot at the top of the Bloc, and then the cord is wound through the bottom of the Bloc in a maze-like way before the USB portion plugs into the included battery pack (which is removable).

blocwhatsinthebox
Winding the cable through the Bloc took me several tries because it requires a precise fit. The cable needs to be incredibly tight and packed down all the way into the grooves in the Bloc stand, which is done with a little tool. When the cable isn't lined up exactly, it's not going to reach the USB port, and while it might sound easy to wind a cable, let me tell you, it's not.

blockcordmaze
In fact, winding that cable through the Bloc felt like I was doing an impossible puzzle and it took a good 20 minutes for me to figure out I needed to ignore the instructions and wind from the USB side and go backwards from there. I used a 1m Apple Watch cord but if you have a 2m cord, you're going to need to do the winding process twice over for double the frustration.

blockcordmaze2
Given the intense cable management in the Bloc Power Bank, I'd plan to buy an extra cable for it. Most users are not going to want to remove the cable over and over again for use without the Bloc, so consider it permanently attached. I'm also not sure what twisting and pulling an Apple Watch cable around all of those curves does to it, but I'm sure it's not good.

The Battery Pack

Once the cable is in place, the Apple Watch and the battery pack included with the Bloc are charged together through a micro-USB cable that ships with the product. At 2,000 mAh, Boostcase promises the Bloc will be able to charge the Apple Watch to full four times over, which I found to be true in my testing.

With my 38mm Apple Watch, I actually got almost five full charges from the Bloc case, but it may be closer to four charges for the 42mm Apple Watch, which has a slightly larger battery. That means I could potentially take the Bloc case on a trip where I didn't have power and have a functional Apple Watch for nearly a week, but with the weight and size of the Bloc case, I'm not sure I'd want to do that.

blocpieceswithcap
Battery level on the Bloc is visible through three LEDs on the side of the device next to the micro-USB port, giving a rough estimation of how much battery is left.

Bottom Line

Boostcase's Bloc Power Bank is an enigma. It's a product that has a built-in battery that can charge the Apple Watch when you're away from home, but it's not portable enough to make that worthwhile, nor is there any kind of travel case included. It's great on a desk because it's slim, but on a desk, that built-in battery isn't exactly useful, and it's expensive compared to other options.

blocwithapplewatch2
I don't know who would use this product because it seems to be solving a problem that doesn't exist. As someone who travels a lot, the shape and the weight of the Bloc eliminate it as something I'd pack because it's a whole lot heavier than just a standard Apple Watch charger. I might use it at my desk, but its inability to work with closed-loop bands limits its usefulness.

The built-in battery can be removed from the Bloc and used on a standalone basis with an Apple Watch or iPhone, but I'm not sure why anyone would want to use this solution over a dedicated battery pack. In fact, if I were to travel and need extra juice for my Apple Watch, I'd much rather take along my standalone Apple Watch charger and something like the Mophie Powerstation Plus, because that would be about the same price and a lot more portable.

Visually, the Bloc is attractive and its long design is unique, so I could see someone purchasing it as a desktop charger, but for most users, there are more practical, affordable Apple Watch stands available.

Pros:

  • Solid construction
  • Lots of color options
  • Battery charges Apple Watch to full 4 times

Cons:

  • Heavy
  • Oddly shaped
  • Doesn't work with all bands
  • Expensive
  • Frustrating to set up
  • Doesn't work with Nightstand Mode

How to Buy

Boostcase's Bloc Power Bank for Apple Watch can be purchased from the Boostcase website. There are six different finishes available, each priced at $79.95.

Related Roundup: Apple Watch 12
Buyer's Guide: Apple Watch (Buy Now)
Related Forum: Apple Watch

Top Rated Comments

145 months ago
My simple ugly DIY approach...

Attachment Image
Score: 3 Votes (Like | Disagree)
ArtOfWarfare Avatar
145 months ago


Who ever thought that was a good idea?
Score: 3 Votes (Like | Disagree)
FrederikTK Avatar
145 months ago
That design is really... let's say interesting...

Why, when the battery is so small, would they make the device that large? There has to be a more dense way to roll that cable up!
Score: 2 Votes (Like | Disagree)
145 months ago
My simple ugly DIY approach...
If only you had a golden Apple Watch Edition attached to it, it would look even cooler :)
Kudos for the nice construction!
Score: 1 Votes (Like | Disagree)
145 months ago
Score: 1 Votes (Like | Disagree)
nutmac Avatar
145 months ago
This is one strange device.

I assume the answer is no since neither the article nor Bootcase's website mentions it, but is it capable of charging other device as well? That is, can its USB port be used to charge iPhone? And if not, what's the point of desktop-bound battery charger for Apple Watch again?
Score: 1 Votes (Like | Disagree)

Popular Stories

Apple Watch New Charging Puck

Here's Why a New Apple Watch Charging Puck Was Just Released

Wednesday September 16, 2026 8:53 am PDT by
The new Apple Watch Series 12 and Apple Watch Ultra 4 have hardware changes that allow for faster charging, but you will need to use the new version of the Apple Watch Magnetic Fast Charger included in the box in order to achieve this boost. If you need extra ones for your own charging stands or travel or so forth, Apple released the new version of the charger on its online store last week, with...
watchos 27

PSA: watchOS 27 Removes This Useful Feature From Your Apple Watch

Thursday September 17, 2026 1:34 am PDT by
Apple released watchOS 27 on September 14, bringing a new Audio Intelligence feature set to its latest Apple Watch models, but as a result, owners of previous models are set to lose out doubly in the process. Apple Watch Series 12 and Ultra 4 models later this year will get Live Rewind, a feature that provides a transcript of any spoken audio that was picked up by the device in the last 15...
Apple Watch Series 12 First Impressions Thumb

Hands-On With the Apple Watch Series 12

Friday September 18, 2026 1:07 pm PDT by
The Apple Watch Series 12 came out today, and we picked one up to get a look at the new feature set. There are no major external changes, but Apple updated the device's internals and health sensors. Subscribe to the MacRumors YouTube channel for more videos. The Apple Watch Series 12 has the same design as the Series 11, but it does come in different colors. The aluminum models are available...
Latest Stories
Apple 'Welcome Home' Launch: Everything to Expect Tomorrow
Apple 'Welcome Home' Launch: Everything to Expect Tomorrow
13 hours ago
You Can Now Set Up Your iPhone Duo Pre-Order - Do It Before Friday
You Can Now Set Up Your iPhone Duo Pre-Order - Do It Before Friday
13 hours ago
Apple Plans Two-Day Event to Showcase Trio of New Macs and iPad Mini
Apple Plans Two-Day Event to Showcase Trio of New Macs and iPad Mini
14 hours ago
Apple and Pokémon Tease Special Pikachu-Themed Beats Pill Speaker
Apple and Pokémon Tease Special Pikachu-Themed Beats Pill Speaker
14 hours ago
Apple Announces 'Indie Games Week' on App Store
Apple Announces 'Indie Games Week' on App Store
16 hours ago
Amazon Discounting 2026 MacBook Pro by as Much as $600 This Week
Amazon Discounting 2026 MacBook Pro by as Much as $600 This Week
16 hours ago
Apple Watch Ultra 1 vs. Ultra 4 Buyer's Guide: Is It Worth Upgrading?
Apple Watch Ultra 1 vs. Ultra 4 Buyer's Guide: Is It Worth Upgrading?
16 hours ago
Apple Watch SE 3 Available From Just $199.99 on Amazon
Apple Watch SE 3 Available From Just $199.99 on Amazon
17 hours ago
Tim Cook Visits China for the Third Time in 2026
Tim Cook Visits China for the Third Time in 2026
17 hours ago
OLED iPad Mini Could Be $200 More Expensive Than Current Model
OLED iPad Mini Could Be $200 More Expensive Than Current Model
19 hours ago
Apple Launches Special Edition AirPods 5 in India
Apple Launches Special Edition AirPods 5 in India
20 hours ago
New Apple TV 4K and HomePod Mini 2 Pre-Orders Expected to Begin This Week
New Apple TV 4K and HomePod Mini 2 Pre-Orders Expected to Begin This Week
1 day ago
New Apple TV 4K, HomeView, and HomePod Mini: 16 Details Just Leaked
New Apple TV 4K, HomeView, and HomePod Mini: 16 Details Just Leaked
1 day ago
New Entry-Level iPad Not Expected Until Early 2027
New Entry-Level iPad Not Expected Until Early 2027
2 days ago
Apple Plans Major iPhone Duo Retail Showcase, But Supply Will Be Limited
Apple Plans Major iPhone Duo Retail Showcase, But Supply Will Be Limited
2 days ago
Apple TV 4K Getting A19 Chip and a Potentially Easier-to-Find Siri Remote
Apple TV 4K Getting A19 Chip and a Potentially Easier-to-Find Siri Remote
2 days ago
New Mac Mini and Mac Studio Receive Up to $200 Price Cuts at Amazon
New Mac Mini and Mac Studio Receive Up to $200 Price Cuts at Amazon
2 days ago
Apple HomeView Smart Hub to Ship in Mid-November in Four Colors
Apple HomeView Smart Hub to Ship in Mid-November in Four Colors
2 days ago
New Apple TV 4K and HomePod Mini to Ship on October 30
New Apple TV 4K and HomePod Mini to Ship on October 30
2 days ago
AirPods Max 2 Available for $429 in All Colors on Amazon
AirPods Max 2 Available for $429 in All Colors on Amazon
2 days ago
Rumor: Apple to Announce New Partnership With ADT
Rumor: Apple to Announce New Partnership With ADT
2 days ago
AirPods 5 vs. AirPods 5 With Wireless Charging Case Buyer's Guide
AirPods 5 vs. AirPods 5 With Wireless Charging Case Buyer's Guide
3 days ago
Accessory Deals This Weekend: Save on TVs, Headphones, and Smart Home Gear
Accessory Deals This Weekend: Save on TVs, Headphones, and Smart Home Gear
3 days ago
Apple's All-New Home Hub Will Be Revealed October 13: What to Expect
Apple's All-New Home Hub Will Be Revealed October 13: What to Expect
3 days ago
Apple Announcing HomePod Mini 2 Next Week With These New Features
Apple Announcing HomePod Mini 2 Next Week With These New Features
3 days ago
A New Apple TV 4K is Finally Coming on Tuesday
A New Apple TV 4K is Finally Coming on Tuesday
3 days ago
Top Stories: Apple's 'Welcome Home' Launch on October 13 and More
Top Stories: Apple's 'Welcome Home' Launch on October 13 and More
3 days ago
Apple Stores Will Add Your Name to iPhone Duo's Startup Screen
Apple Stores Will Add Your Name to iPhone Duo's Startup Screen
3 days ago
SpaceX Inches Closer to Becoming a U.S. Carrier
SpaceX Inches Closer to Becoming a U.S. Carrier
3 days ago
Apple Potentially Behind 'HomeView' Trademark Filed Alongside 'homeOS' Last Year
Apple Potentially Behind 'HomeView' Trademark Filed Alongside 'homeOS' Last Year
3 days ago