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How Well Do Battery Upsizers Work?

Updated on October 19, 2011
A photo of the Ziotek battery upsizer.
A photo of the Ziotek battery upsizer.
With battery upsizers you can run this D cell flashlight with AAA batteries in an emergency.
With battery upsizers you can run this D cell flashlight with AAA batteries in an emergency.

What Is A Battery Upsizer?

One of the neatest little gadgets to come along in years are battery upsizers. There are a variety of manufacturers of these devices but they are essentially all about the same in design. Battery upsizers work by fitting inside each other, like Russian dolls, so that you can make an AAA battery into an AA battery, an AA battery into a C, battery, etc. You can upsize batteries from AAA all the way to D cell size. How is this possible you might ask? The different sizes of batteries all share the same voltage, 1.5 volts.

Why Battery Upsizers Are So Handy

Everyone has found themselves in this situation. You need a battery for a flashlight, remote control, etc, and you have a whole drawer full of the wrong size batteries. If you have a battery upsizer, and if the size you need is larger, all you have to do is put the smaller battery in an upsizer, or then into another one, and so on, until you have the size you need. Battery upsizers can also prevent wasted batteries which might have remained in the drawer for months unused.

Drawbacks Of Battery Upsizers

The downside of using battery upsizers is that batteries are sized differently for a reason. The larger the battery, typically the more amperage it is capable of. A normal alkaline D cell battery typically has about 8 amp hours and an AA battery only about 2 amp hours. Thus, with larger batteries come a bigger supply of energy. The difference is very small between AAA and AA batteries, so you can easily upsize this size with little loss of longevity. You will notice that upsized D batteries that started with AAA will not last as long as regular D batteries. Devices that require a lot of amperage to start up, such as motorized toys, etc, may not work well with batteries upsized from AA and AAA but may work fine when the upsizing is only from C to D cell size. However, you may just need to power a flashlight in an emergency and have a bunch of AAA or AA batteries around and get by with upsizing all the way from AAA to D. You can't use battery upsizers in a charger, which is another drawback.

Are Battery Upsizers Worth The Money?

You can usually find battery upsizers that cover from AAA to D size for under $15. This may be money well spent if you consider that it might save you a trip to the store on game day should your remote need an AA battery and all you have on hand are AAA. Likewise, during a power outage they give you more versatility to run battery powered devices with the batteries you have on hand. In my opinion battery upsizers are one of those "gadgets" well worth the money.

Below is a very "cheesy" video from a pitch man, describing how one brand of battery upsizers works.

Pitch Man's presentation of a kind of battery upsizer

Comments

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  • doodlebugs profile image
    Author

    doodlebugs 6 years ago from Southwest

    We used these so much last Christmas I am ordering another set for this season.

  • Hello, hello, profile image

    Hello, hello, 7 years ago from London, UK

    That is a grest product and thank you for the information.

  • wandererh profile image

    David Lim 7 years ago from Singapore

    I have no idea they made such things. In a pinch, I would use two or three pennies to convert from AAA to AA size. Usually works quite well. :)

  • Jo Deslaurier profile image

    Jo Deslaurier 7 years ago

    I had no idea they even made these or that all those batteries shared the same voltage. Glad to learn about this

  • Mentalist acer profile image

    Mentalist acer 7 years ago from A Voice in your Mind!

    The most useful situation would be to upsize a AAA to a AA in a remote,good to know doodlebugs;)

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