What a battery cross reference chart does

A battery cross reference chart is a lookup table that matches batteries from different manufacturers to one another. When you know the battery number from one brand — say, an Energizer or Duracell — the chart shows you which batteries from other brands have the same voltage, size, and performance. This matters because retailers don't always stock the exact brand you need, and identical batteries often cost different amounts depending on the label.

The chart works by grouping batteries that are physically and electrically interchangeable. A battery marked as "LR44" on one package is the same as an "AG13" or "357" on another. The voltage is identical, the dimensions are identical, and they will power the same device for roughly the same length of time. The cross reference tells you which numbers mean the same thing.

Key Takeaways

  • Battery cross reference charts group batteries by their actual size and voltage, not by brand name, so you can swap one brand for another without harming your device.
  • The chart uses standardized battery codes like LR44, CR2032, and 9V that stay the same across manufacturers, making it straightforward to find equivalents.
  • You need only the battery number from your device or the dead battery itself — the chart does the rest of the matching work for you.
  • Batteries with the same cross reference number will have the same runtime in your device, though price and shelf life may vary by brand.

How to read a battery cross reference chart

Start with the battery number you already have. This might be printed on the battery itself, on the device's battery compartment, or in the device manual. Common formats include "LR44," "CR2032," "AAA," "9V," or "357." Write down the exact number — including any letters and numbers.

Find that number in the left column of the cross reference chart. The rows to the right will show you equivalent batteries from other manufacturers. For example, if you look up "LR44," you might see it matches "AG13," "357," "SR44," and "A76" depending on the chart. All of these are the same size and voltage, and any one will work in a device designed for an LR44.

The chart often includes a column for voltage (usually 1.5V, 3V, or 9V) and sometimes a column for chemistry type — alkaline, silver oxide, or lithium. This tells you what kind of battery you are looking at. If you need a replacement, you can pick any number from that row, and your device will work the same way.

Common battery codes and what they mean

Battery codes follow a pattern. The first letter or letters indicate the chemistry: "L" means alkaline, "C" means lithium, "S" means silver oxide, and "A" means alkaline. The next letters or numbers describe the size and shape. "R" means round, "F" means flat, and numbers like "44" or "2032" describe the exact dimensions in millimeters.

Button cell batteries — the small round ones used in watches, calculators, and hearing aids — use codes like LR44, CR2032, SR626, and AG13. AA, AAA, C, D, and 9V batteries use their letter names because they are so common. Specialty batteries for cameras, car keys, and medical devices have their own codes, but they all follow the same logic: the code tells you the size and chemistry, and the cross reference tells you which other codes mean the same thing.

When you see a cross reference chart, the codes in each row are interchangeable. You do not need to understand the code itself — you just need to find your battery number and pick any equivalent from that row.

Where to find a battery cross reference chart

Battery retailers and manufacturers publish cross reference charts online. Energizer, Duracell, Panasonic, and Maxell all maintain searchable charts on their websites. You can also find printable PDF charts by searching "battery cross reference chart" plus the battery type you need — for example, "button cell battery cross reference chart" or "9V battery cross reference."

Many electronics retailers, including Best Buy and Batteries Plus, have cross reference tools on their websites where you type in a battery number and see equivalents. Local battery shops often keep printed charts behind the counter and can tell you the equivalent in seconds. If you are buying batteries in person, bring the old battery or the device manual so the staff can look it up for you.

Some device manuals include a small cross reference table in the back. If you still have the manual for your device, check there first — it will show you which batteries work and often which brands are equivalent.

Why battery equivalents cost different amounts

Batteries with the same cross reference number have the same voltage and size, but they may differ in shelf life, brand reputation, and where they were manufactured. A Duracell LR44 and an Energizer LR44 are chemically identical and will power your device for the same amount of time, but Duracell may charge more because of brand recognition.

Store brands and off-brand batteries are often made by the same manufacturers as name brands but sold under a different label. A battery marked "Westinghouse" or a store's house brand may be physically identical to a Duracell, just cheaper. The cross reference chart does not tell you the price difference — you have to compare that yourself at the register or online.

Shelf life also varies. Some batteries are designed to hold their charge for five years, others for ten. If you buy batteries and store them for a long time before using them, a longer shelf life matters. The cross reference chart groups batteries by function, not by how long they last on the shelf, so you may need to read the package to compare that detail.

What to do if your battery number is not on the chart

If you cannot find your battery number on any chart, the number may be incomplete or misspelled. Check the battery itself again — look at all sides and the top. Sometimes the code is small or faded. If you have the device manual, look there for the battery specification.

If the battery is very old or very specialized — for example, a battery for a vintage camera or medical device — it may not appear on modern charts. In this case, take the battery or the device to a local battery shop or electronics repair shop. They have access to older reference materials and can often identify the equivalent or find a replacement that works.

You can also contact the device manufacturer directly. Provide them with the device model number and ask what battery it uses. They can tell you the correct battery code and often point you to equivalent brands.

How to use a cross reference chart when shopping

Before you go to the store or shop online, write down your battery number and take a photo of the battery itself if you have it. When you arrive at the store or open the retailer's website, use the cross reference chart to see all the equivalent numbers. Then search the store's inventory for any of those numbers — whichever one is in stock and cheapest is the one to buy.

If you are shopping online, search for each equivalent number separately. Prices vary widely between retailers and brands, so checking a few options takes only a minute and can save you money. Add the battery to your cart, and you are done.

If you are in the store and unsure, show the staff member your battery or device and ask them to cross reference it. Most battery retailers do this for free and can tell you what is in stock right away. This is faster than looking it up yourself and guarantees you leave with the right battery.

Frequently Asked Questions

Can I use any battery from the same cross reference row?

Yes. All batteries in the same row have the same voltage and size, so they are physically and electrically interchangeable. Your device will work the same way with any of them. The only differences are brand, price, and shelf life.

What if the chart shows multiple voltage options for the same battery number?

Different chemistries can produce different voltages. For example, an LR44 is typically 1.5V alkaline, but an SR44 is 1.55V silver oxide. Check your device manual or the battery compartment to see what voltage is required. Most devices tolerate small voltage differences, but it is safer to match the voltage listed in your manual.

Do I need to buy the same brand as the original battery?

No. Any battery with the same cross reference number will work. Store brands and off-brand batteries are often identical to name brands and cost less. The only reason to stick with the original brand is if you prefer it based on past experience or shelf life.

Will a cross reference battery last as long as the original?

A battery with the same cross reference number will power your device for the same amount of time. However, shelf life — how long the battery lasts before you use it — varies by brand and storage conditions. Check the package for shelf life if you plan to store batteries for a long time.

What if my device manual does not list a battery number?

Look at the battery compartment inside the device. The battery number is usually printed there. If not, remove the old battery and read the number directly from it. If the battery is dead and you cannot read it, take the device to a battery shop or electronics retailer and they can identify it for you.