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Most watch batteries produce about 3 volts but cannot supply much current. This is ok because the motor inside a watch only needs a tiny amount of current.

An AAA cell produces about 1.5 volts but can supply a lot more current than a watch battery. The amount of current it can give depends on what type of AAA cell it is. (Some cells are Zinc/Carbon, others are Alkaline, Lithium, etc.)

Depends on the size of the watch battery. Battery ratings are difficult to determine as the amount of energy stored in a battery depends upon how you fast you discharge it, and of course the manufacturer. In fact most manufacturers do not put any rating on a battery aside from the voltage.

But use the volume as a rough guide. Other things being equal, volume should be proportional to energy stored.

If you need an exact , you will have to resort to experimentation. Get some of the exact type and brand of battery you want to compare, put loads (resistors) on them and measure output voltage versus time.

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How many AA batteries make a pound?

It would take about 30 AA batteries to make a pound. Each AA battery typically weighs around 0.8 ounces, so you would need 16 batteries to equal one pound.


What might happen to a bulb if you added too many extra batteries to the circuit?

If you added more batteries in parallel, then the bulb would shine for a long time. If you added more batteries in series, then the bulb would burn very brightly for a short time and then 'burn out'.


What might happen to the bulb if you added too many extra batteries to the circuit?

If you added the batteries in parallel, then the bulb would stay on for a long time and nobody would get any sleep. If you added the batteries in series, then the voltage across the bulb would eventually become excessive and the bulb would burn out.


How many batteries does it take to light up a 25 watt bulb?

Is the bulb a 12 volt bulb or a 120 volt bulb?Or does it have some other voltage such as 230 volts which is very common in Europe and many other countries of the world?This question cannot be answered without knowing at least the voltage of the light bulb and also the voltages of the batteries that are being asked about.


How did the battery change over time?

Batteries have evolved over time to become more efficient, longer-lasting, and environmentally friendly. Early batteries were bulky and had limited capacity, while modern batteries are smaller, more powerful, and can be recharged many times. Advances in technology have led to the development of lithium-ion batteries, which are widely used in many electronic devices today.

Related Questions

How many AA batteries make a pound?

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There are many many stores that can do this, but your best bet is to visit your local jeweller or watch store. They have all the equipment needed to do it properly. Even local markets sometimes have a stall there that can do it at a reasonable price.


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There are many different styles of watch batteries out on the marketplace today. Each one is unique and needs to be in a certain style of watch. If you aren't sure of the battery that your watch takes, look at the old one and bring it with you when shopping for a replacement.


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If your watch has died, do not throw it out. Open the back and write the numbers down that you find on the battery. If your watch has more than one battery, document them both and how they are inserted into the watch. Department stores, electronic stores and big box stores may carry the batteries you need. If local stores do not carry them, perform an online search. Many merchants carry watch batteries and offer free shipping.


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