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The Best Ways to Save Laptop Batteries

Modern laptop personal computers have processing technologies and powerful software applications that have become so advanced as to replicate the desktop PC experience. To maximize the mobile computing benefits that laptop PCs offer, users can keep in mind several measures to both conserve the capacity of their laptop battery, and extend the battery's life for as long as possible. This includes charging the battery the right way and using the right power settings.

laptop pc


According to PC Magazine, a typical laptop battery will enable the PC to run at full power for a few hours. In most cases, after about 18 to 24 months, laptop users will notice a steady degradation in the performance of the battery, and that the battery will run the PC for less and less time after each recharge. This is because lithium ion batteries have a limited number of charge cycles -- meaning a limited number of times they can be taken from a full charge to a full discharge -- before they aren't able to hold power on their own. A user will find they will have to charge their laptop battery more frequently as time goes on. New batteries can cost $100 or more.


Users who leave their laptop plugged into a power outlet with the battery inserted into the laptop for long periods of time are likely accelerating the battery's decline in performance. This is because the battery only rarely has an opportunity to discharge and it loses its charge capacity. If the laptop must be plugged in to an outlet, one solution to save battery life is to pull the Apple Macbook battery out of the laptop and use it only when the laptop is unplugged. According to PC Magazine, every 30 days or so (or every 30 charges), users should do a full battery discharge -- which means charging the battery to its full capacity, then using the computer until the battery is completely drained, and fully charging again.


One of the easiest ways to damage a laptop battery and quickly degrade its performance is to cause the laptop to overheat, or to use an alternating current (AC) power adapter that has the incorrect voltage. Users should take care to verify their adapter matches the AC outlet voltage. In addition, users can help prevent overheating by using a cooling pad when the laptop is in their lap, or to place the laptop on a pillow or blanket that can block cooling fans and cause the laptop to heat up.

Conserving Battery

Users can also take steps to conserve their IBM thinkpad battery between charges. Among the most effective steps are disabling Bluetooth and wireless connectivity (when it's not needed) and reducing the screen brightness. In addition, users can change their laptop's power management settings and reduce the amount of time the laptop stays on with no activity before going into "sleep" mode. Disconnecting unneeded accessories from the laptop and cleaning a battery's metal contacts with alcohol are two other ways to save battery power.

How to Hack an External Laptop Battery

Over time, laptop batteries lose their power and eventually are unable to hold a charge. When your laptop battery no longer holds a charge as long as it once did, it is prudent to replace the battery. Replacing a laptop battery can be very expensive. The cost of replacing the battery in an older laptop often exceeds the value of the laptop. You can save money by replacing the rechargeable cells inside of your battery pack. When replacing the rechargeable cells, you can also add higher capacity cells to extend the life of your battery.

Remove the external battery from your laptop. The battery is located on the bottom of your laptop, and usually has a switch you push forward to remove the battery. Place the battery on your anti-static mat.

Remove the battery's cover. This will expose the cells inside the Sony laptop battery. Test each cell with the multimeter to make sure the cells do not have any power.

Make a diagram of the way your battery's cells are laid out. This diagram will be your reference point after you remove the old cells and add the new cells to the wiring.

Separate the cells from the connecting wires using the electric soldering tool. Briefly heat the end of the tab to melt the solder and immediately remove the soldering iron. Remove the cells from the battery shell.

Using the cell layout diagram, solder together the new cells. Place the new cells into the battery shell and connect the wires and the cells.

Close the battery and allow it to cool for 48 hours. After the battery has cooled completely, it can be tested in your laptop.

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