Are Batteries Allowed On Plane? | Travel Smart

Most batteries are allowed on planes, but their type, size, and how they are packed determine if they can travel in carry-on or checked luggage.

Packing for a trip often brings up questions about what can and cannot fly, and batteries are a frequent point of confusion for many travelers. Understanding the rules for different battery types ensures a smoother security screening experience and contributes to everyone’s safety onboard. Let’s break down the guidelines so you can pack your devices and spares with confidence.

Understanding Battery Basics for Air Travel

The core reason for battery regulations stems from a potential fire risk. Certain batteries, particularly lithium-ion, can overheat and ignite if damaged, short-circuited, or manufactured defectively. Aviation authorities have established clear rules to mitigate this risk, distinguishing between batteries based on their chemical composition and energy capacity.

Generally, batteries fall into a few main categories: alkaline (like AA, AAA), lithium-ion (rechargeable, found in phones, laptops, power banks), and lithium metal (non-rechargeable, often in cameras or watches). Each type has specific rules regarding its allowance in carry-on versus checked baggage, and whether it needs airline approval.

Lithium-Ion Batteries: The Powerhouse of Modern Travel

Lithium-ion batteries are ubiquitous in our daily lives, powering everything from smartphones and tablets to laptops and portable chargers. Their high energy density makes them efficient, but also necessitates strict travel regulations. The key metric for these batteries is their Watt-hour (Wh) rating, which indicates their energy capacity.

• Under 100 Wh: Most common consumer electronic devices (phones, laptops, tablets) and standard power banks fall into this category. These are generally permitted in carry-on baggage. There are typically no limits on the number of devices containing these batteries. For spare batteries (like power banks), you can usually carry several, provided they are protected from short circuits.
• 101-160 Wh: Larger laptop batteries, some professional camera batteries, and higher-capacity power banks might fall here. You must obtain airline approval before traveling with these. A maximum of two spare batteries in this range is allowed per passenger, and they must be carried in your carry-on baggage. They are strictly forbidden in checked luggage.
• Over 160 Wh: Batteries exceeding 160 Wh are prohibited from air travel, both in carry-on and checked baggage. This typically applies to very large power banks or specialized equipment.

According to the TSA, lithium-ion power banks must be stored in carry-on bags and are strictly prohibited in checked luggage due to their potential fire risk. This rule applies to all spare lithium batteries, regardless of their Wh rating.

Power Banks and Portable Chargers

Portable chargers, also known as power banks, are essentially spare lithium-ion batteries. They must always be packed in your carry-on bag. Never place them in checked luggage. To prevent accidental short circuits, ensure their terminals are protected. This can involve keeping them in their original retail packaging, a battery case, or taping over exposed terminals.

Laptops, Tablets, and Mobile Phones

Devices with installed lithium-ion batteries, such as laptops, tablets, and mobile phones, are generally allowed in both carry-on and checked baggage. However, many travelers prefer to keep these valuable items in their carry-on for security and accessibility. If placed in checked luggage, ensure the device is switched off and protected from accidental activation.

Lithium Metal Batteries: Non-Rechargeable Essentials

Lithium metal batteries are non-rechargeable and contain metallic lithium. They are commonly found in items like camera batteries, watches, calculators, and some medical devices. For these batteries, the critical measurement is the lithium content in grams (g).

• Under 2g: Most small consumer devices and their spare batteries fall into this category. These are generally permitted in carry-on baggage. There are typically no limits on the number of devices containing these batteries. Spare batteries must be protected from short circuits.
• 2-8g: This range applies to larger lithium metal batteries, often used in professional photography equipment. Airline approval is required for these. A maximum of two spare batteries in this range is allowed per passenger, and they must be carried in your carry-on baggage. They are strictly forbidden in checked luggage.
• Over 8g: Batteries exceeding 8g of lithium metal are prohibited from air travel, both in carry-on and checked baggage.

Just like lithium-ion spares, any loose lithium metal spare batteries must be carried in your carry-on and have their terminals protected to prevent short circuits.

Alkaline and Dry Cell Batteries: The Everyday Workhorses

Common household batteries like AA, AAA, C, D, and 9V cells are known as alkaline or dry cell batteries. These batteries pose a much lower risk compared to lithium batteries due to their chemical composition.

Alkaline and dry cell batteries, whether installed in devices or as spares, are generally allowed in both carry-on and checked luggage without specific quantity limits. Even though they are less volatile, it is still a good practice to protect the terminals of any loose spare batteries to prevent them from short-circuiting and potentially generating heat.

Spare Batteries: The Golden Rules for Carry-On

The overarching rule for spare batteries, especially lithium-ion and lithium metal types, is to pack them in your carry-on baggage. This allows flight crews to address any rare issues quickly and effectively. Storing them in checked luggage is a significant safety violation and can lead to your bag being delayed or even confiscated.

Protecting the terminals of spare batteries is a simple yet vital step. Loose batteries can short-circuit if their terminals come into contact with other metal objects, generating heat and potentially causing a fire. Here’s how to protect them:

• Keep them in their original retail packaging.
• Place each battery in a separate battery case or plastic bag.
• Tape over the exposed terminals with non-conductive tape (like electrical tape).

Batteries in Checked Luggage: What’s Allowed and What’s Not

For most travelers, the primary concern for checked luggage is avoiding the prohibition of spare lithium batteries. Loose lithium-ion batteries and power banks are unequivocally forbidden in checked bags. This rule is in place because a fire in the cargo hold is much harder to detect and extinguish than one in the cabin.

Devices with installed lithium batteries (e.g., a laptop or tablet) can sometimes be placed in checked luggage, provided the device is completely switched off and protected from accidental activation. However, given the value of these items and the risk of damage, many prefer to keep them in their carry-on. Alkaline and dry cell batteries, whether installed in a device or as spares, are generally fine in checked luggage.

Smart luggage, which often contains non-removable lithium-ion batteries, has its own set of rules. If the battery is removable, it must be removed and carried in your carry-on. If the battery is not removable, the bag might be prohibited entirely, or only allowed as a carry-on if it meets specific airline and TSA size/weight requirements.

Special Cases: Wheelchairs, Medical Devices, and More

Travelers relying on battery-powered mobility aids or medical devices have specific guidelines designed to accommodate their needs while maintaining safety. Batteries for wheelchairs and mobility devices, such as wet cell (spillable) or non-spillable batteries, require advance notification to your airline. Non-spillable batteries are generally easier to transport, but both types have specific packing and handling instructions that the airline will provide.

Small medical devices like hearing aids, pacemakers, and continuous positive airway pressure (CPAP) machines typically use smaller batteries that are permitted. If your medical device uses a larger lithium battery, ensure you understand its Wh rating and inform your airline. Always carry any spare batteries for these devices in your carry-on, protected from short circuits.

Airline-Specific Rules: Always Verify

While the TSA and FAA set the baseline regulations for air travel within and from the United States, individual airlines can implement stricter policies. Before any flight, it is always a prudent step to check your specific airline’s website for their battery policy. This is particularly relevant for larger lithium-ion batteries (101-160 Wh) where airline approval is mandatory, or for smart luggage. A quick check can save you from potential delays or having to surrender a battery at the airport.