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Westclox Alarm
How do I determine which type of watch battery my clock takes?

I have a Westclox brand travel Alarm Clock, model 47633 "Voyager." As seen in this link: http://store.focususa.com/westclox47633voyagermetallictravelalarmclockwithsnooze.aspx

The batteries died sometime back and I took them out and set them aside with the intention of bringing them with me to the store to replace them. I must have forgotten what they were for and thrown them away, and now I don't know what size/type of watch battery to get for my clock. There are NO markings on the clock anywhere to suggest battery type. Not even the model number of the clock, I had to find that by comparing pictures online.

So, does anybody know how I might determine which type of battery to buy to get this Clock Working again? I've done a lot of googling, even looking on the manufacturer's website and also searching for a copy of the clock's manual online. No luck.

You only option in the absence of the battery number from the manufacturer or some other source is to use the battery compartment from where the batteries were removed as a guide to the size. This will then allow you to narrow down the battery in terms of its (or their size - you say you removed two). Assuming we are talking watch type batteries here, you can find which ones match the size you determine and use something like the link below to sort by battery size. This table allows you to sort all the watch batteries by their size. There are about 50 different types of watch battery so the choice is by no means easy. Once you have narrowed the size, then, if there is a choice of voltage (either lithium or silver oxide), choose the size of battery in silver oxide (or alkaline) as these are lower voltage then the lithium battery of equivalent size. Fit these and see if your Clock Works. That way you don't risk putting in batteries with too high a voltage. If this doesn't work and there is a lithium sized equivalent then you could try those.
Failing this trial and error approach you could write to Westclox to ask them the question.

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