While we witness large heaps of improvement in terms of display properties, design, and camera performance, most phones will still die on you if you use them a lot before the day is over. And while the latest energy-efficient chipsets have certainly improved things, you should admit that batteries still don’t feel as “futuristic” as other aspects of many contemporary flagship devices.

In case you’re on the market for such a useful portable gadget, we have a couple of suggestions for you.

Large high-capacity powerbanks

Okay, if we are going to get a powerbank, let’s go all-in and find ourselves a unit with a high capacity that will allow us to charge our device a couple of times at least. However, they are hefty and this brings some limitations.

Now, if you want to go really big, there are fewer choices better than Anker’s 26,800mAh PowerCore bank. This large battery capacity ensures that you will be able to fully top up your Galaxy or iPhone several times before you need to recharge the powerbank itself (which takes around 6.5 hours). Usually, fast charging would generate tons of heat that will lead to faster battery degradation of the powerbank’s built-in tank, but the Anker PowerCore 26800 arrives with smart overheat protection that will decrease electricity output if high temperatures are detected.

Aukey Sprint Ultra 30000mAh Power Bank

mophie powerstation USB-C 3XL

RavPower 32000mAh 3-Port Power Bank

Middle-of-the-road powerbanks

A nice balance between size, weight and capacity.

mophie powerstation XL (Fabric)

The 15,000mAh mophie powerstation XL portable power bank offers a nice combination between compact size and useful capacity. It provides up to 55 hours of power for when you’re away from the plug. This powerbank can charge multiple devices at once by plugging one device into the USB-C port and another into the USB-A port. A bright four-light LED power indicator displays charging status and the current battery life. The mophie powerstation XL features a fabric finish that adds style and prevents scuffs and scratches.

This rather compact powerbank offers a 2.4A output and one 2A input with ismart technology. It also features protection against short-circuiting, overheating and overcharging. The accessory has a capacity of 5,000mAh, which should be more than enough to charge your phone one and a half times, or even more. This tiny cylinder can be yours for just $13.

Anker PowerCore 10000 Redux

The Anker PowerCore 10000 Redux manages to maintain a slim waistline while boasting a 10,000 mAh capacity. Anker says that this powerbank is only slightly heavier than a baseball, and charges a phone more than two times, and most tablets once. It’s not the most compact of the lot, but it offers great size/capacity ratio.