The 18650 are LiPo batteries. That means if you are familiar with the Lithium battery technology, you can change and replace these batteries yourself. However, you need to be extremely careful though as any misstep and you risk causing a fire or even an explosion.
A high amp 18650 battery is that contains a capacity of 3100 mAh. Not only that means it will last longer than the conventional 18650 battery, but moreover, it packs 40 amps of continuous discharge. That value is twice as much as a conventional 18650 battery. A high amp 18650 battery features 3.7V.
The cycle in a 18650 battery is calculated when a battery is charged and discharged. The 18650 batteries are charged up to 4.2V and down to between 2V and 3V, the value depends entirely on the cell's cut-off voltage specification.
Discharging happens the minute you start using your batteries. The 18650 Lithium-ion batteries are voltage-dependent. If you do not know your voltage, do not attempt to charge your battery. Doing so may result in dangerous repercussions.
Before using the 18650 battery you need to test the voltage of it. That way you can determine whether the battery can be used for the purpose you want or not. Beware that using the battery without testing the voltage may result in catastrophic results.
To test your batteries you will need the following equipment:
Beware that the 18650 batteries are LiPo type batteries, so when charging or discharging you have to choose the LiPo option in all the devices.
When using used cells, testing their voltage is a must, if any battery shows a value that is below the 2.5V then you need to dispose of this battery immediately as it is not safe for usage. When charging a used cell it is safer to set the charging late low (e.g. 0.3 amps) and the voltage to 3.7V and then start charging.
What are the advantages of a high amp 18650 battery?
There are many advantages of using a high amp 18650 battery, some of these advantages are:
The high capacity they provide of 3100 mAh.
High amp 18650 batteries last much longer than the conventional 18650 batteries.
It packs 40 amps of continuous discharge, which is twice the value a conventional 18650 battery provides.
It features 3.7V
Small in size, which means it can be used in many devices without using any unnecessary space.
Cheap in price for the amount of electrical power they provide.
They have the ability to store about four times the capacity of regular Li-ion batteries.
They are Lightweight.
They can be made in any shape or size.
They are the most resistant type of battery there is on the market.
They are used in RC devices, including boats, drones, helicopters, cars, Vaping devices and any other devices that require their battery to be lightweight.
They are good at marinating constant voltage as they discharge.
Protecting your high amp 18650 battery
Some 18650 batteries that are cheap come without a protection circuit. Protecting the 18650 is extremely important as problems like over-discharging or overcharging can be dangerous to both the device and the person using that device. Here we will teach you how to make a protection circuit that is capable of protecting your 18650 battery.
You will first need to get some tools and parts to start creating the circuit.
The tools and parts needed are:
Any old phone battery
Salvage the circuit
Grab your cutting tool, and then open up the old phone battery. Be extremely careful to not short the circuit it may cause an explosion.
Now, start cutting the input wires of the circuit.
Check out which input is negative and which is positive.
There will be three output pins, one is the signal pin, and the other two are the positive and the negative outputs.
After succeeding in salvaging the circuit goes and solders it to the 18650 battery.
Soldering the circuit to the 18650 battery
Prepare four pieces of copper wires
Heat up the soldering iron
Solder together and the 18650 battery using the copper wires.
Pay extreme attention to the polarity, and try your best to not short the battery, it may cause a fire.
Now, it is time to test your circuit.
Testing the protection circuit
Grab the voltmeter.
Test the output voltage.
If it is working OK, then congratulations you have created a protection circuit to your 18650 battery and can start working with it.