The tutorial for assembling a homemade 12v lithium battery is as follows:
Materials: 3 18650 lithium batteries, a battery box or a magnet.
1. When we prepare three lithium batteries, we must ensure that their models are the same and cannot be mixed. This is because different lithium battery models can have different chemistries, voltages and capacities, which can pose safety risks if mixed.
2. When assembling the battery box, we need to make sure that the batteries are connected in series. This is because the voltage only increases when the batteries are connected in series. If other connection methods are used, such as parallel or mixed connection, the voltage will not increase and the voltage of the entire battery system will only be 4V.
3. After installing the battery, use a voltmeter tour measure 12 V. It indicates 12.33 V.
4. The magnetic beads must be conductive, otherwise they must be wrapped with a layer of tin foil.
5. Connect the batteries in series, with the positive pole facing the negative pole, not the other way around.
6. After successfully assembling the battery box and connecting all the batteries, to ensure that the system is operating properly and obtaining the expected voltage, it is recommended to perform a voltage measurement. When measuring, you can use a voltmeter to read the output voltage of the battery box.
If all goes well, we should be able to see a 12V output. This proves that the battery box is connected correctly and the system is working as expected.
Precautions for using lithium batteries
1. Avoid overcharging and discharging:
Lithium batteries have certain charging and discharging requirements. the range, if exceeded, may cause permanent damage to the battery.
2. Avoid contact with high temperature environments:
Lithium batteries may expand, leak, catch fire, and present other safety issues in high temperature environments. -High temperature environments should be avoided.
3. Avoid short circuit:
A short circuit of the lithium battery can cause explosion and other serious consequences, therefore short circuit should be avoided as much as possible during the use.
4. Proper storage:
Lithium batteries should be stored in a dry and well-ventilated environment, away from direct sunlight, and avoid storage near high temperature objects, at moisture and flammable and explosive.
5. Pay attention to the lifespan:
Lithium batteries have a certain lifespan:urea life after expiration, the battery should be replaced in time to avoid safety problems due to battery aging.
6. Pay attention to the production date:
When purchasing lithium batteries, you should choose products with a more recent production date to avoid purchasing expired or counterfeit products.
7. Pay attention to suitability:
Before using lithium batteries, you should first confirm whether the battery is suitable for the equipment or tools used to avoid safety problems caused by a mismatch.
8. Pay attention to how you transport it:
If you must transport lithium batteries, they must be placed in their original packaging. Avoid safety problems caused by improper transportation methods.
9. Pay attention to recycling:
When the lithium battery is no longer used, it should besent to the designated recycling point for recycling and avoid throwing it away or throwing it away at will. avoid Causing environmental pollution and safety hazards.