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Last week I ran over to Best Buy to get a replacement battery for one of our cordless phones. The phone is about three years old and is part of a two-phone set.

I found the battery in no time but was dismayed to see that it cost $22.95. Seems expensive, right?

So I began looking around and quickly spotted entire phones for sale that were cheaper than just the battery. Crazy, right?  I started thinking about how this could be and here’s what I’ve come up with.

Phones are made up of lots of parts. They have little speakers, circuits, microphones and, yes, batteries. Now, one would think that under normal circumstances, the value of the sum of the parts of the phone would be equal to or less than the value of the entire phone. But no. In this market, an individual part, in this case the battery, is valued to be equal to the sum of all the parts. Why?

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The only reason I can come up with is that, for the consumer, the individual parts have zero value on their own. They only have value when they are packaged with the other parts. In other words, a cordless phone battery is useless to someone unless they have a cordless phone, and likewise, a cordless phone, minus the battery, is similarly useless and without value.

The weird thing about this, and what I’m getting hung up on, is that the cost of production seems to play no role in the relative pricing of these items. I think it’s safe to assume that the production costs of one phone battery are a fraction of the production costs of an entire phone, especially when you consider the fact that when you buy a cordless phone, it INCLUDES a cordless phone battery.  Now if phones and phone batteries were always made by the same company, then none of this would matter. In fact, they might inflate the price of the battery to encourage people to buy more phones.

But why would Energizer price their phone batteries so high? Or, on the other hand, why would V-Tech price their phones so low? Are they losing money on these inexpensive phones just to prevent people from buying replacement batteries for their old phones?

If that’s the case, then it’s working, at least it is on me. I ended up buying a cordless phone system with an answering machine and caller ID for about $35 rather than plunking down $23 for a battery. No-brainer, right? Not only am I baffled by this whole thing, but battery experts must be too. I’ve reached out to a few different battery makers and organizations and none have responded to our requests for more information. Or maybe their phones are out of batteries and they can’t afford a replacement?”

We’ll be taking a closer look at this issue in days to come, but in the meantime, if anyone has any insights, please post a comment.