Did your camera's battery run out of power just when you needed it most? Or are you in an emergency situation but your smartphone is completely discharged? Don't have the charger available? Don't panic, if you need to find a solution quickly, the steps in this article will help you.
Steps
Method 1 of 2: Using Batteries to Charge a Battery
Step 1. Remove the dead battery from the device
In order to recharge it, you will need to have direct access to the metal contacts of the battery. Remember that some smartphone models do not have a removable battery, so check if your mobile device falls into this category. Most (but not all) Android and Windows smartphones allow you to remove the back cover with a simple hand gesture, applying the necessary pressure. In the case of iOS devices, don't try to do this - you can't remove the battery without completely disassembling the smartphone or tablet.
Step 2. Get AA ("AA"), Mini AA ("AAA") or 9V batteries
Unlike the current present on the normal electrical network (which supplies an alternating current), normal alkaline batteries deliver a direct current that is the same as that used by smartphones or cameras.
- You may have been puzzled by the fact that you are suggested to charge a battery using simple batteries, which are nothing more than non-rechargeable batteries. Perhaps you were expecting to discover a trick that would allow you to charge a battery without using any alternative power sources. In reality, the latter scenario cannot be verified because one of the foundations of physics (the principle of conservation of energy and mass) clearly explains that nothing can be created out of nothing.
- Remember that it is better to recharge the battery directly rather than leaving it installed in the device and attempting to connect the device to the batteries to carry out the power transfer. By using the wrong amperage or voltage, you run the serious risk of irreparably damaging the delicate electrical circuits in the device. For this reason, if you choose to use this charging method without following the instructions in the article, do it exclusively at your own risk.
Step 3. Identify the positive and negative poles of each battery
On AA batteries and on all types of batteries that can be commonly used at home, this information is clearly marked on the outside. Instead, in the case of smartphone batteries, the positive pole corresponds to the metal connector closest to the outer edge of the accumulator and the negative pole to the one located farthest from the edge (normally, this type of battery is characterized by three or four connectors, however the central one or those are used by the device to measure the battery temperature and to perform other functions).
Step 4. Choose batteries (stylus, mini stylus or the type you prefer) that have a sufficient voltage to be able to recharge the battery in question
Nowadays, smartphone batteries need more than 3.7V DC voltage to be recharged. So a series of stylus or mini-stylus batteries or a single 9V alkaline battery should be able to provide enough power for the purpose. Remember that the common AA and mini AA batteries deliver a maximum voltage of 1.5 V, so to exceed the 3.7 V required to recharge you will need to connect 3 AA or mini AA batteries in series. When batteries are connected in series, the total voltage is equal to the sum of the individual voltages, so if you have chosen to use three AA or mini AA batteries, you will get a total voltage of 1.5V + 1.5V + 1.5V V = 4.5 V, which represents a sufficient amount of energy to be able to recharge.
Step 5. Get two pieces of electrical wire
In an ideal situation, you should use ordinary electrical cable covered with the insulation layer, where only the four ends will be visible the copper filaments present inside.
Step 6. Connect the batteries that will supply the voltage and the battery to be recharged using the two pieces of electric cable
Use electrical tape or clamps. The electrical cables should not heat up if you have made the connection correctly. If not, it could be a sign of a short circuit, so disconnect them from the battery immediately. Remember that the energy transfer will take place slowly, so the charging process will take some time. For this reason, it is not necessary for you to hold the batteries and the battery throughout the charging procedure.
If you have chosen to use stylus or mini stylus batteries, before connecting them to the battery to be recharged, you will need to connect them "in series". This means that you will have to use an electric cable to connect the negative pole of one battery to the positive one of the next and so on, after which you will have to connect the only free positive pole of the series of batteries to the corresponding connector (+) of the battery to be recharged and done. the same with the negative pole
Step 7. When a certain amount of time has passed, the battery should have recharged
Remember that it will most likely not be fully charged, but it should allow you to use the device you need.
Method 2 of 2: Using Hand Clutch
Step 1. Remove the battery from the device bay
Hold it in your hand.
Step 2. Rub the battery between your hands to generate enough heat
Continue rubbing it between your hands for anywhere between 30 seconds and several minutes.
- Note: Please note that the battery is not actually charging. Some users have commented on the web that rubbing a battery in the manner described increases its residual charge perhaps thanks to the static electricity that is generated by rubbing. This interpretation is completely incorrect and without foundation.
- The lithium-ion cells, found in all modern batteries, release electricity as a result of a chemical reaction that takes place inside them. As indicated by the Arrhenius equation, the chemical reaction that takes place inside lithium batteries increases in intensity with increasing temperature. In reality, rubbing the battery between your hands serves to increase its internal temperature to promote greater electrical conductivity.
Step 3. Re-install the battery back into the battery bay on the device
In this case, the remaining battery charge will have an extremely limited life, so try to use it to the best of your ability.
Warnings
- Do not overcharge the batteries. Lithium batteries can explode when overcharged.
- Make sure the device is completely turned off before removing the battery, otherwise you run the risk of altering its configuration settings or worse, losing important data.
- Remember to try to recharge only the rechargeable batteries. Never try to recharge normal alkaline batteries or any type of batteries that are not rechargeable.
