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How to use AAA battery in parallel to increase current.

I get a lot AAA 1.5V battery from my friend. If still store them, will not have any helpful.
Now I have a wall clock which use AA battery size. So cannot use with them.
But it not hard over than our endeavor.
We need to use AAA battery holder. But I cannot buy it in any store. Most is AA size only.

I’ve seen friends of mine soldering wires directly to the battery terminals. He tell me, we can solder them but must fastest. A general battery not like over heat.

This way is easy and cheap.

Do not need holder battery

Therefore I also soldering them as Figure 1 you will see that I connected wiring in parallel to increase current is doubly times. By positive to positive and negative to negative terminals. It cause same voltage at 1.5 volts.

To soldering two battery on parallel directly


Figure 1 Soldering the wire to battery directly.


two battery on parallel cause high current application
Figure 2 two battery on parallel cause high current application.

Then we connected wiring to the wall clock battery terminals. As Figure 3

connected wiring to the wall clock battery terminals
Figure 3

Lastly, time passes for 6 months, it still works well. We will can use AAA battery by no holder but it is really useful.

connecting AAA batter without holder

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This Post Has 3 Comments

  1. thank you very much

    I will try that in my house

  2. An alternative approach:

    take a piece of dowel (or suitable square sectioned piece of wood) and cut to approx 1/16″ to 1/8″ shorter than the full length of an AA battery. Wrap and solder 18-24 gauge wires to the pins of two metal pushpins (the round, mostly flat type, without plastic cap). Push these into the ends of the dowel. This is your dummy battery, so you don’t need to solder the device you’re powering.

    To make a battery box, you can take strips of aluminium cut from a drink can, or better, find copper tape or strips (sometimes found as shielding inside broken power supplies), clip two of these to a size and length slightly more than is necessary to bridge the top of whatever number of batteries you’re going to run in parallel. Solder the other end of your wires from the dummy battery to these. You can either tape these to the end of the batteries (easy for low-tech users), or cut a “dado” through the middle of a block of wood and put the metal at either end and press the batteries in between them.

    Since the batteries themselves are not soldered (nor is the device being powered), it is easier to swap the batteries, as you don’t need a soldering iron after you’ve made the adapter (esp useful if you’re giving this to someone who isn’t a tinker), and of course is safer than trying to solder wires to batteries.

    If you must solder to a battery terminal, you might look into a capacitor driven tack welder, which would allow you to fuse a metal strip to the battery terminal.

    You can also make dummy batteries using the dowel and tacks approach, where the wire runs between the two tacks. If you have a device which only runs off of batteries, and you have a solar cell or an AC-DC adapter, you can have a dummy battery and a battery adapter (one with a pair of wires coming off of it to connect to an external supply), and insert them into the device in place of batteries.

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