There are many 20,000 mAh battery packs hitting the market lately. Portable batteries and charging solutions are popular among all mobile users, especially power ones.

Limefuel offers a 20,000 mAh portable battery that can charge two devices at once, at varying levels, on the go. But can it be your go to portable battery charger on the go?

Let’s look at the Limefuel 20,000 mAh battery pack and see what type of punch it backs for mobile users on the go.

More About the Limefuel 20,000 mAh Battery Pack


The Limefuel battery pack can output 1A and 2.1A through two ports. It’s universally compatible, working with tablets and phones alike. You can charge two devices at once, making this an option when on the go with family, friends or coworkers.

It offers an auto on and off feature, ensuring you’re only getting the charge you need to preserve its battery life along with your device’s batteries. It features a digital display to let you know what its battery life is at, along with to ensure you it’s charging your devices and which ports are active.

A unique feature of the Limefuel 20,000 mAh is its built-in flashlight. This makes it a tad bit easier to charge your phone or tablet in the dark or simply have a light at night. The battery pack runs on a heavier side due to its capacity, weighing about a pound and measuring 6.4 x 3 x .9 inches in total size.

This isn’t a battery pack you throw in a purse or backpack without feeling the weight. Limefuel boasts a 500+ lifetime cycle of use for this battery pack, which is among the highest on the market.

Limefuel 20,000 mAh Review


Out of the simple packaging this device comes from, it looks and feels good when holding in your hands. The weight is expected but doesn’t seem overwhelming or a deterrent for power users.

However, right off the bat, both 1A and 2.1A ports had trouble charging my Samsung Galaxy S5. It seems the connections in the port are bad or loose, which meant I had to jiggle my charging cable to get the charge started. After a few uses, it became less necessary to do so as the ports became “use” to my cable. I’m not sure. It still happens every now and then, I jiggle the charging cable, and it charges without pause until I unplug.

This battery pack seems to charge slower, even with a 2.1A output and Samsung default lightning cable. Plugged in to the wall my Galaxy S5 charges in less than two hours when fully depleted, it took close to 3.5 with this battery pack. I gave up trying to charge my tablet (Samsung Galaxy Tab 3) on it, it just wouldn’t get enough juice to matter much in the long run if the battery was drained.

While a 20,000 mAh battery pack, in theory, should charge a Galaxy S5 about seven times. I was able to get four to five full charges out of it. Not sure where the battery drain is coming from between the Limefuel or my phone, but when compared to other battery packs out there, I’ve yet to come across this issue which leads me to believe the Limefuel battery pack is losing capacity somewhere or isn’t as efficient charging as it claims to be.

Note: I will say that looking at other reviews of this unit, not everyone experienced this issue so keep that in mind when choosing a battery pack.

As an overnight charger, this works the best. When you don’t need your phone for periods of time, the Limefuel 20,000 mAh battery pack can keep you going when you need it the most.


Despite the negatives I came across when reviewing the Limefuel 20,000 mAh battery pack, for the price, it’s a decent power bank to consider for long-term travels, overnight stays, camping and the like. It’ll get you through a trip, so long as you utilize it to charge overnight and can charge it back up when not in use. Consider pairing the Limefuel with a decent solar charger, and it’ll get you through all occasions.

Disclaimer: The above company sent us the product for testing. However, that has not swayed my opinion of their product one way or another. All conclusions are based on at least a fortnight of careful testing.

Get a Limefuel 20,000 mAH Battery Pack here.