Convert AA Battery Pack to USB or AC Electric Power Plug-Introduction and Conversion

We use batteries to power most of our electronics. However, some battery-operated devices don't necessarily have to be portable. One example is my son's battery replacement. It can move but usually remains in the same general area. In such a case, it is best to power this device with an AC adapter and saves the battery. In this project, I'm going to show you how to use an old power adapter to power your electronics, not the battery. I will show you how to replace the adapter and how to connect it to your electronic device in two different ways.

How do you convert AA battery to AC power

Use the voltage circuit to adjust the power output

It is rare to find a power adapter that fits into an electrical appliance unless sold together as a pair. Therefore, we need to adapt our power supply to the circuit we want to power on. The easiest way to do this is to use an AC regulator such as the LM317. The typical configuration for this type of circuit is shown in the photo above.

Connect the power supply with the power plug and built-in switch.

The first way to connect the power supply to your electrical device is to use a DC jack with a built-in switch. In this connection, usually, pin 1 is connected to pin 2. However, if the plug is plugged into a wall outlet, this connection breaks, and vice versa pin 1 is connected to the wall of the plug. This type of connection can be used to switch the device from battery operation to power operation when powered on.

To connect this jack to the entire circuit, cut the wire from the positive terminal of the battery in half. Connect the cable from the positive pole of the battery to pin 2 of the socket. Then connect the other half of the cut wire leading down the circuit to pin 1 of the power jack. Finally, connect the negative wire from the battery and circuit to pin 3 of the power socket. This will create the same baseline.

To be able to use this connection in this project, you have to connect a regulator circuit between the power supply unit and the plug. You cannot place the regulator circuit in the case because the socket has an output connector and you will need to adjust the power coming from the battery and adapter. This will lose quite a lot of electricity and save battery is the goal of this project.

3.2V 20A Low Temp LiFePO4 Battery Cell -40℃ 3C discharge capacity≥70% Charging temperature：-20~45℃ Discharging temperature: -40~+55℃ pass acupuncture test -40℃ maximum discharge rate：3C

READ MORE

Connect the power adapter with multiple artificial functions.

Another option for connecting the power adapter to an electrical device is to use a spare or dummy battery. These are all battery-shaped and fit inside the battery compartment but are used to connect the power supply to the terminals on the device's battery connector.

The battery is off to change ac actor.

Now just plug in the power adapter and you're good to go. This mod gives you a choice of how you want to power your electronics. You can take advantage of the convenience and portability of the battery, or you can save battery and money by using AC power.

Option to Make a Nonbattery Light

You can also connect the clamp plug with a twisted direct connection to the lamp cable if you want a "wireless" lamp. (You should use a wire drop wire to strip the insulation from the lamp wire.) We didn't do this because we didn't want to cut the lamp wire and didn't have room to hide the battery in the lamp base.

Some Additional Notes

If your light won't turn on, make sure the grip connector cable is securely attached to the output bin (step 2). This is a slightly tricky step because the lead wires are very small. You don't want to over-tighten and cut it, but you do want a secure connection.

I haven't tested the battery light run time yet. Low-voltage LED, so it doesn't consume too much energy. However, the battery doesn't last forever. To save money, I recommend buying rechargeable AA batteries (or two to eight sets if you plan on using one set at a time).

The 12 V lamp gives off a pretty bright light. I can easily read magazines near the light when the room is dark. I think it's like a 40 watt light bulb.

Low Temperature High Energy Density Rugged Laptop Polymer Battery Battery specification: 11.1V 7800mAh -40℃ 0.2C discharge capacity ≥80% Dustproof, resistance to dropping, anti - corrosion, anti - electromagnetic interference

READ MORE

If you're tired of swapping out batteries in portable radios or other battery-operated devices, using an AC adapter is a great alternative. All you have to do is determine the voltage (V) and current (mAh) of the device. Then attach a suitable adapter to the point where the battery in the device touches.

Step 1

Remove and count the battery in your customized device. Standard round batteries like AAA, AA, C, or D all have a voltage of 1.5 volts. Multiply 1.5 by the number of batteries. So four batteries are equal to 6 volts. Six batteries equal 9 volts and so on.

Step 2

The current or amplifier (mAh) can be found on the datasheet in the device manual or on the device sticker. This value is the current (mAh) for which the adapter should be designed. Using an adapter with a higher mAh rating than your device is fine as the device will only use what the adapter requires.

Step 3

Buy a power adapter that matches the voltage and mAh you learned in the steps above.

Step 4

Cut the low voltage plug at the end of the adapter cable. Separate about half an inch of insulation from the end of the cable and pull about 4 or 5 inches.

Step 5

Look inside the battery compartment and notice that two connectors are touching the battery on either side of the compartment. On one side the two joints were connected by a piece of metal, while on the other side there were two separate joints. The adapter cable is connected laterally to a separate connection.

Identify the neutral of the adapter along the white or embossed line on one of the cables. Attach the neutral wire (with tape or solder) to the negative pole in the battery compartment. Only attach the cable to the side of the battery compartment where the connections are not connected.