This transistor acts as a current limiter and also as a switch to connect and disconnect the battery from the system load. When there is no battery, the BATsense of the charger detects its absence and simply turns off the FET switch.
This will allow you to use the laptop without plugging in the adapter.īy this, don’t you wonder if the battery connects to the system directly or not? Yes! But through a FET transistor. When the system is completely loaded with charge, the current then flows to charge the battery. Now you may think, what is the need for a battery in the laptop? What if you have plugged out the adapter? Then comes the use of the battery charge. The adapter current is drawn directly to the system to work. In such case, you can use a laptop without a battery. When the laptop is running on full load, it takes the total current from the adapter and nothing is left to charge the battery. So when the adapter is connected to the system, it takes the current required and remaining current goes to charge the battery. Among these two, the system load is given the first priority. When the adapter is connected to the laptop, the power is divided into two paths: one path goes directly into the system and the other goes to the battery. Now, let’s know how actually the laptops works without a battery connected to it. You should do all these only when the laptop is turned OFF or unplugged from power connections. Make sure you don’t touch the battery contact or remove the battery or replace the battery when the adapter is plugged in. This might damage the components and you might lose the data in the system. While using the laptop, don’t plug out the power cord while working with the laptop.
The use of UPS will work with the laptop even in a high-intensity electrical load or a poor quality electrical current and would prevent your laptop from damages. Make sure that you won’t use a laptop without a battery in an area with a high-intensity electrical load.
The first is that the battery can act as a UPS to prevent power variants that could cause the components on the laptop’s motherboard to fail. Here are some of the reasons how it is possible for a laptop to work without a battery.
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