If you’re a fan of the Fallout franchise, then chances are you’ve already run into Fusion Cores in your travels. They’re vital to powering up your Power Armor and other machinery, but what do they do? In this post I’ll explore how they work and when their lifespan begins!

In order to understand how fusion cores function, we need to take a look at where they come from. In the original Fallout games, these power sources were created by General Atomics International as an alternative energy source for United States military vehicles (and later abandoned). As it turns out, these canisters are actually quite dangerous; not only does each one contain radioactive material that will seep out over time if not properly contained (not good!).

Fusion Core – The Ultimate Energy Source

Fusion Cores are one of the many things you’ll need to monitor as you travel through the wasteland. But how long do they last? In this post, you’ll learn how to conserve your cores and make them last longer, as well as what happens when they’ve been used up.

How long do Fusion Cores Last?

The lifespan of a fusion core varies depending on how often it’s used. If you’re using your Power Armor sparingly, a fusion core can last up to 150 hours. However, if you’re constantly using it, the core will only last for around 20 hours.

When the fusion core has been used up, the Power Armor will no longer be powered. You’ll have to find a new core or head back to a settlement to recharge.

What is a Fusion Core?

A fusion core is a component of a Power Armor suit that provides power to the various systems. It is inserted into the back of the suit and powers the limbs, helmet, and chest piece.

Why you need to know how long they last

Knowing how long your fusion cores will last is important for two reasons: first, it allows you to conserve your resources and make them last longer; and second, it helps you to plan your journeys in advance. If you know that a core will only last for a certain amount of time, you can make sure to have a new one before you need it. This way, you’re never left stranded in the middle of the wasteland without power!

How can I make my fusion core last longer?

In order to make your fusion core last longer, there are a few things you can do:

– Use your Power Armor sparingly. If you’re not using it, don’t put the fusion core in!

– Take breaks between uses. If you’re constantly using your Power Armor, let the core cool down for a bit before recharging.

– Store your Power Armor in a cool, dry place. This will help to preserve the core.

What is the best way to farm Fusion Cores for later use?

The best way to farm Fusion Cores for later use is by doing side quests that require you to kill robots. The robots will drop the cores when they are killed.

Alternatively, you can find a Power Armor station and use the core recharge function. This will allow you to get a new core without having to leave the comfort of your settlement.


Fusion cores are vital to the operation of Power Armor. They’re one of many things you’ll need to monitor as you travel through the wasteland, but how long do they last? This post will explore that question and provide some helpful tips for making them last longer! You can conserve your resources by not using it too much or letting it cool down in between uses, while also planning ahead so that you have a new core before you need it.