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The Best Padlocks for Your Storage Unit [Our Picks]

Security is an essential aspect of our lives. We should secure not only our homes with items like outdoor lights, but any belongings inside storage units as well. You’ve probably heard of storage units being robbed, with important and expensive items being lost.

In any case, there are various ways to protect your storage unit from unwarranted access, among which are padlocks that are extra strong and secure to give would-be robbers a hard time.

Though storage units have their own security, it’s important for you to also consider protecting your unit by getting yourself a durable padlock.

Getting the best padlock for your storage unit may require some effort, however. You have to spend time comparing brands and checking individual reviews to ensure you get good quality at a price that’s within your budget.

After all, you don’t want to take security issues for granted. You have to ensure the protection of your goods, and you can only do so if you know your way around the right brands.

To lessen your confusion and not waste your time surfing around, we’ve come up with this list of high-quality padlock candidates:

10 Best Padlocks for Your Storage Unit

Kurtzy Heavy Duty Padlock

Kurtzy heavy duty padlock

You can say the Kurtzy’s heavy-duty padlock provides ultimate security and is considered to be one of the best padlocks all around. Holding this lock in your hand, it’s apparent that it’s heavy duty.

It’s made with a solid steel body that’s resistant to drilling and sawing. Thus, it can keep your storage unit safe from unwarranted access and theft.

Moreover, it has a wide shackle at 12 mm in diameter, making it a perfect fit for large latches. It comes with four keys so that if you accidentally lose one, you’ll still have three spares. Kurtzy also provides a money-back guarantee, ensuring that if you’re not happy with your purchase (which is very unlikely), you’ll be refunded 100%.


  • Heavy duty
  • 4-keys set
  • Solid steel
  • Anti-drill
  • Anti-saw


  • Bulky for small latches
  • May get rusty when wet

Crystal Vision Weatherproof Anti-Theft Padlock

Crystal Vision SHPLA Weather Proof Anti Theft

If you want added security, beef up your security with sound. This padlock from Crystal Vision comes with an alarm that alerts security personnel if someone’s trying to access your unit without permission. The anti-theft feature has a super loud alarm that’s triggered by breakage, vibration, and cable clipping. It ensures that no one attempts to open your storage unit without the key.

The best padlock for a storage unit must stand the test of time, especially the changing of seasons. This particular lock is great because it can withstand temperatures ranging from -14 to 140° F. Moreover, it’s waterproof. You don’t need to worry about rain and snow if your storage unit is placed outdoors.


  • With alarm
  • Stainless steel
  • 10mm double locking
  • Waterproof


  • 1-year battery life span only

Master Laminated Steel Lock


Master Lock Padlock


Master is one of the leading brands when it comes to padlocks of all kinds. It always has great reviews and is trusted by many consumers. Hence its inclusion in our list of the best padlock for storage units comes as no surprise.

This laminated steel lock from Master has a shackle made from hardened boron alloy, which helps for maximum security and durability. It also has a 5-pin cylinder, as well as a dual ball locking mechanism which makes it hard to open if someone doesn’t have the actual key.


  • Great for indoor or outdoor use
  • Weatherproof
  • Moisture, grime, and dirt-protected
  • Removable cylinder for lock re-key


  • No particular disadvantages as of the moment

Abus Granit Extreme Security Padlock


ABUS 37/80 Granit Alloy Steel Rekeyable Padlock


If you have the budget and want to get the highest quality padlock for your storage unit, then we recommend this Abus Padlock. Among all the locks in this list, this is the most expensive one, and yet it offers the highest level of security for your storage. It has anti-corrosion coating making it ideal for outdoor use.

Moreover, this padlock comes with a security card which protects from unauthorized key duplicates. Abus is in fact the world’s leading manufacturer of security products so they evidently know what they’re doing!


  • Made from hardened alloy steel
  • Rekeyable padlock
  • Protected from picking
  • Anti-corrosion coating
  • Cannot be easily duplicated


  • Premium price

Daygos 4 Digit Combination Lock

4 Digit Combination Disc Padlock with Hardened Steel Keyless Heavy Duty Combo Lock


For those with a tight budget, you can choose this padlock from Daygos. It’s affordable but still provides the necessary protection for your storage unit. We consider it one of the best padlocks for storage units because it has a unique shape that makes it hard for a thief to cut or open.

It also features a slide button that cannot be easily opened as opposed to other regular and standard locks. Moreover, this lock can provide 10,000 passcode combinations, making it hard for robbers to guess. It’s also made from stainless steel, which makes it a durable pick.


  • Anti-rust
  • Anti-corrosion
  • Anti-freeze
  • Waterproof
  • All seasons
  • Unique design and style
  • Indoor and outdoor use
  • 10,000 codes to choose from
  • Affordable


  • New design might confuse you

Commando Lock Total Guard Bolt

Commando Lock Total Guard Bolt Cutter Proof High Security iCHANGE Shrouded Padlock


A military-grade padlock might be what you need for maximum security of your storage unit. The right padlock needs to be strong and durable, and this military-grade Commando lock is just that. It has a tactical padlock system that’s multi-functional and offers the highest level of security and protection.

Furthermore, the shackle is made from steel alloy, which is more durable than case-hardened steel. It’s made from zinc-plated carbon steel that’s weather resistant. This padlock should last for a long time as it’s resistant to rust and corrosion too.


  • 10 security pins
  • High security provided
  • Rust and corrosion-resistant
  • Bolt cutter proof
  • Meets US military standards


  • Difficult to open when you’re in a rush

KAWAHA 71/80KD Stainless Steel D-Shaped Heavy Duty Padlock

KAWAHA 71/80KD Stainless Steel D-Shaped Heavy Duty Padlock

A strong and sturdy padlock is important if you want to secure your storage unit and the things inside it. KAWAHA gives you a stainless-steel heavy-duty padlock, which guarantees ultimate security that’s resistant to cutting and sawing. The body, shackle, and cylinder cover is all made up of anti-rust stainless steel that’s highly resistant to rust and corrosion.

Moreover, it’s waterproof and defiant to acid too. This is a great choice for both indoor and outdoor storage units. KAWAHA also ensures that you do not forget to lock your storage door because you can only remove the key once locked. Hence, you cannot leave without properly locking it.


  • Anti-corrosion
  • All-weather padlock
  • Resistant to cutting and sawing
  • Made from 304 stainless steel


  • No particular disadvantages as of the moment

Stanley Laminated Steel Padlock

Stanley Hardware S828-244 CD8824 Laminated Steel Padlock


Stanley is a well-known brand in the market of padlocks. This particular laminated steel padlock from Stanley offers ASTM security-grade 5. The laminated steel body protects it from attacks of burglars.

The shackle is also made from hardened steel, which is great for resisting saws and cuts. It also has a patented keyway cover that protects it against drilling. The dual stainless-steel ball-bearings provide great security against prying attacks, while the six-pin cylinder pin avoids picking with pins. All-in-all, this Stanley padlock is a great deal for the price.


  • Affordable
  • High-security protection
  • Resistant to sawing and cutting
  • Resistant to prying, pin-picking, and drilling


  • Big lock, make sure about the size before buying

Schlage Solid Steel Round Padlock


Schlage 994831 Solid Steel Round Padlock


This solid steel round padlock from Schlage is an affordable choice for security and protection for your storage unit. The body is made from hardened solid steel, while Molybdenum makes up the shackle.

This combination is perfect for increased security. It also has a double deadbolt lock that adds more strength to it. It has a 6-pin brass cylinder to ensure that it cannot be easily opened by intruders.


  • Strong and durable
  • Affordable
  • 6-pin cylinder for maximum security
  • Anti-picking and anti-prying


  • Might rust if used outdoors

Master Lock Outdoor Biometric Padlock


Master Lock 4901DLH Fingerprint Lock Heavy Duty Outdoor Biometric Padlock


Our world today is nothing without technology. This list of the best padlocks for storage units wouldn’t be complete without a high-tech addition. Master, being a top brand, offers a biometric padlock that can be opened through fingerprint scanning. This provides convenience since you don’t need to bring keys nor remember password combinations.

When it comes to how durable this padlock is, Master guarantees that this is a heavy-duty padlock that’s reliable to use for storage units and even sheds, among others. It’s also protected against the weather and other harsh elements. Moreover, the battery jump feature will still allow access in cases when the battery dies down while still locked. Once the battery dies, you can easily replace this.


  • Fingerprint-operated
  • Weather-resistant
  • Battery jump feature
  • Heavy duty
  • Great for outdoor use
  • No smartphone app required


  • Battery lasts for over a year (only)
  • Premium price

Things to Consider When Buying a Padlock

Buying a padlock for your storage isn’t as easy as simply grabbing what’s in front of you (whether that “storage” be your toolbox or a rented storage unit). Before you click on that “Add to cart” button, you need to ensure that the one you’re purchasing actually has the features that you’re looking for. Most importantly, it should fit your storage lock.

There are many things you need to consider before you decide on which padlock is the best for you. These helpful tips will lead you find the perfect padlock match.


Size is an important aspect when buying a padlock. You need to measure or see how big the hole at the lock point is. Knowing the measurement will save you from buying either too big or too small a padlock, which you won’t be able to use in the end.


You need to determine the security level that you need. When you use a facility with a state-of-the-art security system, you might not need to get the best padlock for your storage unit. However, if you still need that extra added protection for peace of mind, you can consider getting a medium-level security padlock rather than those expensive high-level ones.

Know the Shackles

The shackle is the metal U-shape loop at the top of a padlock. However, the shape of this shackle can vary based padlock design. Check the lock on your storage unit and make sure the shackle diameter will be sufficiently large to easily fit in the lock. It’s best to get a shrouded shackle since it comes with an extra covering that makes it resistant to cutting, drilling, and sawing.


Your budget is essential in deciding what to buy. It narrows down your choices from the thousands of locks available. Some may think that the bigger your budget is, the best lock you’ll get.

While this may be true a lot of the time, don’t forget than an affordable padlock can still fit your requirements perfectly and offer a high level of security and protection. If you search diligently, you’ll find one that’s suited to your needs and budget.