“How do I extend the life of my laptop battery?” is a question we are frequently asked. It’s a valid question since laptop batteries are usually expensive to replace.
Laptop batteries are usually made with Li-Ion batteries and the very nature of Li-Ion batteries is that they have about 300-500 charges and last at most about 4-5 years (shelf life). They also have a self-discharge rate of about 1% per day so you need to be sure to charge them at least every 6 months.
6 Tips of proper usage about laptop battery you should know:
The battery memory effect.
In lithium-based batteries this is in fact a myth, it only applies to older Nickle-based batteries. So fully discharging and charging the battery is completely useless and even harmful .
2.Remove the battery when A/C is plugged in?
The answer is: YES and NO, it depends on the situation.
In a normal usage, if the laptop doesn’t get too hot (CPU and Hard Disk around 40ºC to 50ºC) the battery should remain in the laptop socket;
In an intensive usage which leads to a large amount of heat produced (i.e. Games, temperatures above 60ºC) the battery should be removed from the socket in order to prevent unwanted heating.
- Battery discharges
Full battery discharges (until laptop power shutdown, 0%) should be avoided, because this stresses the battery a lot and can even damage it. It’s recommended to perform partial discharges to capacity levels of 20~30% and frequent charges, instead of performing a full discharging followed by a full charging.
To store a battery for long periods of time, its charge capacity should be around 40% and it should be stored in a place as fresh and dry as possible. A fridge can be used (0ºC – 10ºC), but only if the battery stays isolated from any humidity.
One must say again that the battery’s worst enemy is the heat, so leaving the laptop in the car in a hot summer day is half way to kill the battery.
- Use a full charge cycle before recharging
Li-Ion and NiMH batteries (which most laptop batteries are), do not have a memory which you might find in NiCad batteries. However, each chemistry has a limited number of charge cycles, so use a full charge cycle before re-charging to maximize your battery usage.
If you intend to purchase another battery, it’s recommended that you do it only when the current battery is very degraded. If it’s not the case, the non usage of a battery leads to its degradation.
If a spare battery is purchased and won’t be used for a long time, the above storage method should be used.