Introduce
There are many factors that affect the safe use of batteries . But some of them also affect the time the battery lasts until you have to replace it. What are those factors?
Temperature
Knowing if your battery is overheating is the most important thing you need to know to vape safely . Not overheating your battery regularly is also a way to slow down the battery's aging process and prolong its life. The higher the temperature of the battery, the more damage to the internal components and the faster the battery will deteriorate.
Battery - Internal resistance
Battery wear starts with a change in internal resistance and capacity. The internal resistance of a battery is similar to the resistance you get in a coil in a vape , but much lower. Coils can have a resistance of up to 1 ohm, while a battery’s internal resistance is around 0.02 ohms or less, which is a huge difference. But this low resistance can still cause your battery to heat up when the current is removed, just like a coil heats up when current is applied.
As a battery ages or is damaged by overheating, its internal resistance begins to increase. And as the internal resistance heats up the battery, it continues to get hotter. This can cause the battery to fail more quickly, and the cycle repeats itself until the battery can no longer be used or becomes so hot that it vents.
Venting is when the pressure inside an overheated battery is released, a part of the battery weakens and opens to release some of the pressure inside. When the temperature of the battery is pushed up, more gas is created. This gas will create pressure inside the battery, when this happens it means that the battery is too damaged and needs to be replaced.
Battery - Capacity loss
Signs of battery failure from overheating include reduced battery capacity. The capacity of a battery determines how long it will last. In vaping , this number is expressed in mAh. If a battery is overcharged and damaged, its capacity will decrease. Have you ever had to replace batteries within a few months because they couldn’t last long before you needed to recharge them? That’s because the battery overheats, accelerating the process of battery failure and reducing its capacity.
Discharge current
Charging too fast is also one of the factors that cause the battery to overheat.
There are many factors that can cause a battery to overheat, such as charging it too quickly, leaving it near a warm burner, having a poorly ventilated case, or having an overheated controller. But the most important factor in overheating a battery is how much current is being drawn from it while it is in use.
One of the discharge patterns you will see is the continuous discharge pattern. The current does not come in pulses but drains in one discharge until the battery is empty and the voltage drops to between 2.5V and 2.8V.
This continuous capacity is often called CDR (Continuous Discharge Rating). It is also known as MCC (Maximum Continuous Current) and MCD (Maximum Continuous Discharge Rating). They all mean the same thing. This is set by the manufacturer for the battery and usually occurs when the battery temperature reaches 75°C/167°F. At this temperature, the deterioration and damage of the internal components of the battery begins to accelerate. This is why the manufacturer sets the CDR level when this happens, so that we know not to use the battery above this level if we want to be safe and have a long battery life.
Keep a safe margin
Vaping will not discharge the battery continuously, because we will only use it for a few seconds, the device that is started will only draw current equal to the battery's CDR. But we still have to have a safety limit when using the battery. If your device has a problem with the battery, it can cause an explosion or worse. So when using it, you should remember to check the battery's CDR carefully so as not to accidentally exceed it.
Fire and explosion accidents can occur if you do not use batteries properly.
Part two stops here, everyone please wait for part three.
Source: Vaping360
Author: Mooch
Translator: The Vape Club
