Ultra-high capacity power banks have seen a rise in demand recently because they can be a reliable power source for multiple days at a time. This means they can be used for both long camping trips in the wilderness, or as backups for power outages. You’ll be able to charge phones, tablets, or even laptops without constantly thinking you’ll be running out of juice.
On the other hand, because of their large capacity, these power banks tend to be rather heavy and bulky. Although technology is constantly advancing and breakthroughs like GaN and Graphene are highly encouraging, we don’t yet have power banks that are light and portable and that also pack a huge capacity. So for the time being, we need to compromise capacity when we want that extra storage.
Another important aspect about these portable chargers is the fact that they are mostly over the 100Wh limit imposed by the TSA. This means that you won’t be able to take them on planes. Power banks of up to 100Wh are allowed, those between 100 and 160 Wh need a dedicated permit, while any power bank over 160Wh is not allowed on board. Almost all high-capacity power banks will be over these limits. So when purchasing one, please keep in mind the travel restriction that might come with it.
How we made our picks
First of all, all the products we recommend were used by us. We actually got our hands on them for a complete user experience. In picking these products we decided to look for some key factors:
- Capacity. Obviously, this was the number one feature that we looked for. We tried to find the largest capacity power banks available that were a good buy. This brings us to the next point:
- Build quality. We only focused on products from reputable brands that have a long history of providing high-quality products. When it comes to high-capacity portable chargers, there are a lot of knock-off brands out there that make false promises. We steered clear of these
- Fast charging. Another important aspect we took into consideration is the fast charging technologies. The overall capacity is not that important as long as your devices take forever to charge.
- Multiple ports. For power banks in general, but especially for those with more capacity, it’s important to be able to charge multiple devices at a time. We wanted to make sure that you can do so with at least 4 different devices simultaneously.
So, without further ado, here are the best ultra-high power banks from our point of view:
1. Renogy 72000mAh Power Bank
The Renogy Laptop Power Bank is by a wide margin the highest capacity entry on this list. The combination of its high capacity and lighter style part even make it suitable for charging more powerful devices than just laptops.
That said, laptops are where this power bank shines. The DC output port supports 2V/5A, 16.5V/4A, 20V/3.5A, 24V/2A devices, and has a modular tip with support for 19 different charging ports. It also features pass-through charging, so if the power bank is plugged in, it will charge devices from that source first.
The additional USB-A port and USB Type C port can be used simultaneously with the DC port, providing extra support for those with multi-device needs. And it has a LED power indicator, making it easy to track power consumption.
It has protection from overheating, short circuits, power surges, and overcurrents. It’s not waterproof (though many aren’t) and it’s not quite as rugged as some others, so avoid major impacts where you can.
The only major downside to this device is when it comes to portability. Where most power banks are comparable in size to a phone, this one is closer to a large paperback book. The capacity is also well above the TSA limit for carry-on, so it can’t be taken on flights.
2. CRAVE PowerPack 50000mAh
The Crave PowerPack is a high-capacity portable charger that packs in 50000mAh which is the equivalent of 185Wh. This is actually the 2nd version of the same power bank that Crave has designed. This latest version comes with two fast-charging USB type C ports, alongside the two classical USB type A ports.
In terms of charging ports, it comes with 4 different options: 2 USB type A and 2 USB type C. Unlike the Renogy above, it does not feature any DC charging port, nor a car cigarette lighter socket. So it’s only compatible with devices that rely on USB charging. But on the plus side, it can provide up to 100W of power through one of its USB-type C ports. That’s more than enough to charge even the most power-hungry laptop.
The power bank also includes surge protection, short circuit protection, and overcurrent protection. It has an aluminum alloy shell, so it’s one of the sturdier options on this list, but still not technically shock-resistant. For its capacity, it’s rather compact as you can see in the image below:
Due to its large capacity (184Wh), it’s well over TSA limits (100Wh).
3. ROMOSS SENSE8P+ 30000mAh Power Bank
The ROMOSS SENSE8P+ is at the entry-level of ultra-high capacity power banks. Although it doesn’t rise up to the level of the other picks on the list, it does have some noteworthy pluses. First of all, at 111Wh it can be taken on planes. Although you’ll need special approval from the airline before you fly with it, that is doable, unlike the Renogy or the Crave portable chargers which are both over the max 160Wh limit.
At 23.7 oz, it’s the lightest power bank of the bunch. So if you have to carry it around, you’ll feel this one the least. And last but not least, it has a great mAh/price ratio. This means that you’ll get the most mAh for your buck. You’re better off buying 2-3 of these in terms of overall capacity, compared to getting either the Renogy or the Crave. So if you’re on a budget and don’t mind getting more power banks instead of just a single one, then this is the choice for you.
The biggest drawback of the ROMOSS SENSE8P+ however, is its slow charging time. Clocking in at 11 hours, it’s slower than its competitors, although it has less capacity than either of them. If that doesn’t phase you, then we believe this might be the one for you.
What is the largest capacity power bank?
From our research, the power bank with the highest capacity is the Renogy 72000mAh. There are batteries out there with higher capacities, but they lose the classical power bank shape. Instead, they become power stations, such as the Bluetti EB 55. We weren’t able to find another power bank that has a higher capacity than the Renogy. Although, if you do some search, you’ll even find power banks with advertised capacities of up to 100000mAh. However, in most cases, these power banks are pure scams, as discussed here.
How much of the power bank’s capacity is actually usable?
Even if you’re getting an ultra-high capacity power bank, you should know that not 100% of that stored energy is actually usable. Some of it will be lost along the way because the charging/discharging process is not perfect. There will always be energy losses due to different factors. On average, you’d be safe to assume that you’d be able to use 70-80% of a power bank’s capacity. For more details, check out this article.
If you’re shopping for an ultra-high capacity power bank, be sure to consider not just capacity, but also the functions and charging time. All the options on this list are excellent in terms of capacity, so pick the one that has the features that you’re most likely to need.